8bitfiles.net/archives

home *** CD-ROM | disk | FTP | other *** search

/ 8bitfiles.net/archives / archives.tar / archives / genie-commodore-file-library / C64-128BBS / PROG950307.ARC / DTJPROG next >

Wrap

Text File | 2019-04-13 | 59.4 KB | 1,347 lines

─╘╩-┬┬╙ ╨ROGRAMMER'S ╔NFORMATION - FOR ╥EV. 950307 ------------------------------------------------------------------------------ ╘HE INFORMATION GIVEN IN THIS TEXTFILE IS FOR THE USE OF PROGRAMMERS WHO WISH TO WRITE THEIR OWN ┼[╪]┼├ MODULES AND FILE TRANSFER PROTOCOLS FOR THE ─╘╩-┬┬╙. ╒SE THIS INFORMATION AT YOUR OWN RISK! ─╘╩ ╙OFTWARE ASSUMES NO RESPONSIBILITY FOR ANY DAMAGE CAUSED BY THE USE OF THIS INFORMATION. ╘HE INFORMATION IN THIS TEXTFILE IS SUBJECT TO CHANGE WITHOUT NOTICE! ------------------------------------------------------------------------------ ╘HIS TEXTFILE CONTAINS A MAP OF MEMORY LOCATIONS AND ┬┴╙╔├ VARIABLES USED BY THE ─╘╩-┬┬╙. ┴LTHOUGH MOST OF THE MEMORY LOCATIONS ARE NOT USABLE BY MODULES YOU MAY PROGRAM, SOME ARE, AND THE REST ARE INCLUDED SO THAT YOU WILL KNOW WHICH MEMORY LOCATIONS ARE USED BY THE ┬┬╙. ╠OCATIONS MARKED FOR FUTURE USE SHOULD NOT BE USED BY YOUR PROGRAM AS THEY MAY CREATE CONFLICTS IN FUTURE REVISIONS OF THE ┬┬╙. ╘HE LIST OF MEMORY LOCATIONS AND VARIABLES MAY COME IN HANDY FOR USE WITHIN ┬┴╙╔├ EXPRESSIONS IN THE FILE SERVER. ╔T IS UP TO YOU TO DETERMINE IF A VARIABLE HAS ANY USE FOR THIS APPLICATION. ╘HIS MEMORY MAP ALSO LISTS THE ENTRY POINTS FOR THE VARIOUS MACHINE LANGUAGE ROUTINES USED BY THE ─╘╩-┬┬╙. ╘HE MAJORITY OF THESE ROUTINES ARE ╬╧╘ INTENDED TO BE USED BY YOUR PROGRAMS. ╚OWEVER, THERE ARE A COUPLE THAT YOU CAN USE, AND THE USE OF THESE ROUTINES IS DESCRIBED LATER IN THIS TEXTFILE. ╨LEASE DO NOT USE ANY ┬┬╙ MACHINE LANGUAGE ROUTINES OTHER THAN THE ONES DESCRIBED AFTER THE MEMORY MAP! ═OST ROUTINES ARE SUBJECT TO CHANGE, AND MAY EVEN VARY WITHIN THE SAME REVISION UNDER DIFFERENT HARDWARE CONFIGURATIONS. ┬ESIDES THE MEMORY LOCATIONS LISTED HERE, THE ┬┴╙╔├ AND ╦ERNAL ROUTINES ALSO USE THEIR OWN MEMORY LOCATIONS. ╘HE USE OF THEM ARE DESCRIBED IN MEMORY MAP BOOKS FOR THE ├OMMODORE 64. ╠OCATIONS IN THE MEMORY MAP MARKED WITH A * MAY BE USEFUL IN YOUR MODULES OR WITHIN FILE SERVER ┬┴╙╔├ EXPRESSIONS. ╘HE FOLLOWING ╥┴═ MEMORY LOCATIONS ARE NOT USED BY THE ┬┬╙ AND ARE FREE FOR YOU TO USE: ┌ERO PAGE: 02, 92H, 96H, 9┬-9├H, 9┼-9╞H, ┬┼-┬╞H, ├1-├4H. ╧THER: 0310-0313H, 032┼-032╞H, 0334-033┬H, 03╞├-03╞╞H, 07╞8H, 07╞─-07╞╞H, ├000-├11┬H. ╙OME OF THESE ADDRESSES ARE LISTED AS USED IN VARIOUS ├OMMODORE 64 MEMORY MAPS, BUT YOU SHOULD BE ABLE TO USE THEM WITHOUT CAUSING ANY PROBLEMS. ╘HE VALUES STORED IN THESE LOCATIONS MAY BE DESTROYED AFTER YOUR MODULE RETURNS CONTROL TO THE ┬┬╙ PROGRAM. ┘OU MAY ALSO USE ANY MEMORY LOCATION LISTED BELOW AS USED FOR TEMPORARY STORAGE, BUT REMEMBER THAT VALUES STORED IN THESE LOCATIONS ARE SUBJECT TO CHANGE AFTER YOUR MODULE HAS RETURNED CONTROL BACK TO THE ┬┬╙. ┴ ┬┴╙╔├ VARIABLE LIST IS ALSO GIVEN. ═OST OF THESE VARIABLES WILL NOT BE USABLE BY YOUR PROGRAM, BUT THEY ARE ALL LISTED ANYWAY JUST TO MAKE THE LISTING COMPLETE. ------------------------------------------------------------------------------ ─╘╩-┬┬╙ ═EMORY ═AP (╥EVISION 950307): ------------------------------------------------------------------------------ ╙IMPLIFIED (SHOWS ╥┴═ UNDER ╥╧═): ------------------------------------------------------------------------------ 0000 - ╙YSTEM/┬┬╙ ╥┴═ VARIABLES 0400 - ╓IDEO ═EMORY 0800 - ├OMPLIED ┬┴╙╔├ CODE & VARIABLES 9┴6├ - ═.╠. ═ODULE (╙.5) (TERMINAL / BAUDRATE TUNING FUNCTIONS) ┴000 - ┼DITOR/╨ROTOCOL/┼XEC-MODULE BUFFER ┬158 - ─ATA ═ODULE (╙.3) (CONFIGURATION DATA) ┬┬4┼ - ═.╠. ═ODULE (╙.4) (EDITOR & FILESERVER FUNCTIONS) ├000 - ┬UFFER AREAS ├15├ - ═.╠. ═ODULE (╙.2) (INIT. AND MAIN ═.╠.) ─000 - ╔/╧ ╨ORTS (╥┴═ USED BY TERMINAL PROGRAM) ┼000 - ┬ASES FILE MESSAGE POINTERS ╞72├ - ─ATA ═ODULE (╙.6) (┴WAITING-├ALL SCREEN / SHAREWARE SCREEN) ╞─15 - ═ESSAGE BASE TABLES ------------------------------------------------------------------------------ ─ETAILED ═EMORY ═AP (SHOWS ─╘╩-┬┬╙ UNIQUE ADDRESSES ONLY): ------------------------------------------------------------------------------ 0001 - ┬ANK SWITCH PORT ╘HE ─╘╩-┬┬╙ STORES THE EDIT BUFFER, LOADABLE MACHINE LANGUAGE MODULES, SOME ADDITIONAL MACHINE LANGUAGE, AND THE S.3 CONFIGURATION FILE UNDER THE ┬┴╙╔├ ╥╧═. ═ESSAGE POINTERS AND TABLES, THE AWAITING- CALL SCREEN, SHAREWARE NOTICE SCREEN, AND ╦ERNAL ╥╧═ ╬═╔ ROUTINES ARE STORED UNDER THE ╦ERNAL ╥╧═. ╘HE TERMINAL MODE ROUTINE IS STORED UNDER THE ╔/╧ ADDRESS SPACE. 008┬-008├ - ┴├╔┴ BASE ╔/╧ POINTER (╙WIFTLINK ONLY). ╘HIS DATA POINTS TO THE LOCATION OF THE ╙WIFTLINK PORTS. 008─ - ( FOR FUTURE USE ). *008┼ = ═ENU-┴BORT ┼NABLE FLAG ╙TORING A NON-ZERO VALUE HERE CAUSES ALL FILE #2 OUTPUT (THE ┬┬╙ OUTPUT CHANNEL) TO BE DISCARDED WHEN THERE IS DATA IN THE ╥╙-232 INPUT BUFFER. ╘HIS LOCATION IS ZEROED WHEN THE ┬┬╙ REQUESTS INPUT FROM THE USER. ╘HIS LOCATION IS USED TO IMPLIMENT THE ┬┬╙ "QUICK-KEYS". 008╞ - ( FOR FUTURE USE ). *00┴0-00┴2 = ╩IFFY CLOCK - USED FOR PROTOCOL TIMING AND TIMEOUT CHECKS. 00┴5/00┴6 - ╒SED BY ╔╥╤ ROUTINE. *00┬0/00┬1 = ╘EMPORARY WORK POINTER. *00┬2/00┬3 = ╘EMPORARY WORK POINTER. *00╞┬/00╞├ = ╘EMPORARY WORK POINTER. ╒SED BY ╧╨┼╬ ROUTINE. *00╞─/00╞┼ = ╘EMPORARY WORK POINTER. *02┴7 = ┬┬╙ ╔NPUT/╧UTPUT ├ONTROL. ├ONTROLS ╔/╧ THROUGH THE ┬┬╙ ╔/╧ CHANNEL (FILE #2). ╓ALID VALUES ARE: ┬IT 0 - 0 = ┴╙├╔╔ TRANSLATION OFF 1 = ┴╙├╔╔ TRANSLATION ON ┬IT 1 - 0 = ╥╙-232 ╔/╧ ONLY 1 = ╥╙-232 AND CONSOLE ╔/╧ (┬OTH BITS ZERO ALLOWS RAW ╥╙-232 ╔/╧, OTHERWISE LINEFEED AND XON/XOFF FLOW CONTROL ARE ACTIVE.) 02┴8 - ═ODEM DEVICE NUMBER. ╬ORMALLY 2, HOWEVER MAY BE CHANGED TO 4 TO ROUTE OUTPUT TO PRINTER. ╙INCE THIS SHOULD ONLY BE DONE ON CONSOLE MODE, DO NOT CHANGE THIS LOCATION IN YOUR MODULES. 02┴9 - ├ARRIER-DETECT MASK. ┴LLOWS FOR CARRIER-DETECT TO BE TURNED ON OR OFF. ╘HIS IS USED TO PREVENT DROPPED CARRIER CONDITIONS DURING CONSOLE MODE WHILE IN MACHINE LANGUAGE ROUTINES. (┬┴╙╔├ HAS IT'S OWN CARRIER-DETECT MASK VARIABLE.) ╓ALID VALUES ARE: #$00 - ┬┬╙ IGNORES CARRIER #$10 - ┬┬╙ DETECTS CARRIER 02┴┴ - ╠INEFEED FLAG. ┴ NON-ZERO VALUE WILL SEND A LINEFEED AFTER EACH #$0─ CODE SENT TO THE MODEM IF THE ┬┬╙ INPUT/OUTPUT CONTROL IS NON-ZERO. *02┴┬ = ╪╧╬/╪╧╞╞ FLAG. ┴ NON-ZERO VALUE WILL PAUSE OUTPUT VIA THE ┬┬╙ OUTPUT CHANNEL IF THE ┬┬╙ INPUT/OUTPUT CONTROL IS NON-ZERO. 02┴├ - ╓IDEO WIDTH. ├URRENT VIDEO WIDTH (MUST BE BETWEEN 20 AND 140). 02┴─ - ╠AST KEY PRESSED WHILE IN FILE SERVER. ╒SED BY ┬┴╙╔├ PORTION OF ┬┬╙ TO DETERMINE IF USER [┴]BORTED, [╙]KIPPED, OR [╬]EXT'ED THE FILE OUTPUT. 02┴┼ - ┴BORT FLAG. ╒SED BY FILE SERVER. ╬ON-ZERO VALUE ABORTS FILE OUTPUT. 02┴╞ - ─EVICE / ┬UFFER FILE NUMBER. ╒SED BY BUFFER LOAD/SAVE ROUTINES AND FILE SERVER. 02┬0 - ┬AUD-RATE INDEX. #$00 = ╙WIFTLINK BAUD #1 OR 300 BPS ON ╦ERNAL ╥╙-232 #$01 = ╙WIFTLINK BAUD #2 OR 1200 BPS ON ╦ERNAL ╥╙-232 #$02 = ╙WIFTLINK BAUD #3 OR 2400 BPS ON ╦ERNAL ╥╙-232 #$03 = ╙WIFTLINK BAUD #4 ONLY #$04 = ╙WIFTLINK BAUD #5 ONLY #$05 = ╙WIFTLINK BAUD #6 ONLY ╫HEN THE ┬┬╙ CHANGES THE BAUD, IT POKES THE BAUD RATE INDEX HERE, THEN CALLS THE BAUD-RATE CHANGE ROUTINE. ╔F THE BAUD-RATE VALUE IS ╧╥'ED WITH #$08, THEN THE ┬┬╙ WILL ALWAYS CHANGE THE BAUD-RATE, OTHERWISE IT WILL ONLY CHANGE IT IF CARRIER IS NOT PRESENT. ┴FTER RETURNING FROM THE BAUD-RATE CHANGE ROUTINE, THIS LOCATION CONTAINS THE CURRENT BAUD-RATE INDEX VALUE WHICH CAN BE USED TO VERIFY IF THE BAUD RATE WAS CHANGED. 02┬1 - ╫INDOW FLAG. ╔F THIS LOCATION IS GREATER THAN ZERO, THEN THE ┬┬╙ WILL DISPLAY A BLUE WINDOW AT THE TOP OF THE SCREEN. ╘HE NUMBER STORED HERE SHOULD BE THE NUMBER OF CHARACTERS IN THE WINDOW. (├URRENTLY, THIS NUMBER IS 80 OR 120.) *02┬2/02┬3 = ═AXIMUM NUMBER OF ├┬═ DISK BLOCKS ALLOWED IN FILE UPLOAD. 02┬4/02┬5 - ═ESSAGE NUMBER ( ═ESSAGE DATABASE ROUTINES ). 02┬6/02┬7 - ╧LDEST MESSAGE INDEX ( ═ESSAGE DATABASE ROUTINES ). 02┬8/02┬9 - ╬EW MESSAGE NUMBER ( ═ESSAGE DATABASE ROUTINES ). 02┬┴ - ╥OOM NUMBER + #$40 ( ═ESSAGE DATABASE ROUTINES ). 02┬┬ - ═AXIMUM NUMBER OF ROOMS ( ═ESSAGE DATABASE ROUTINES). ═UST ALWAYS EQUAL 50! ─O NOT CHANGE! 02┬├ - ├╧╬╘╥╧╠-├ MASK. #$00 = ─ISABLE ├╧╬╘╥╧╠-├ DETECT #$╞╞ = ┼NABLE ├╧╬╘╥╧╠-├ DETECT 02┬─ - ╥╙-232 STATUS REGISTER ╪╧╥ VALUE. 02┬┼ - ╙YSTEM ├ONTROL ┬LOCK (FIRST 8 SWITCHES) ┬ITS ARE ARRANGED AS FOLLOWS: ┬IT 0 = ├╚╘ ┬IT 1 = ├┼╬ ┬IT 2 = ═╧╬ ┬IT 3 = ╬┼╫ ┬IT 4 = ╨┴╙ ┬IT 5 = ├╥┼ ┬IT 6 = ╞╒╠ ┬IT 7 = ╙┘╙ 02┬╞ - ╨RINTER TYPE. ╬ON-ZERO VALUE HERE TURNS ├┬═-┴╙├╔╔ TRANSLATION ON FOR PRINTER. 02├0 - ┼DIT BUFFER SIZE. ╙IZE IN 256-BYTE BLOCKS PLUS ┴0H. 02├1-02├6 - ╘WIT DETECTOR THRESHOLD VALUES. 02├7-02─1 - ╘WIT DETECTOR TRIGGER VALUES. 02─2 - ├ENSOR MODE FLAG. ╔NDICATES TO CENSOR ROUTINE IF CENSOR ROUTINE IS BEING CALLED FROM THE FILE SERVER OR THE TWIT DETECTOR. ╔F THE CENSOR ROUTINE IS BEING CALLED FROM THE FILE SERVER, THEN ANY WORDS BLANKED OUT WILL NOT TRIGGER THE TWIT DETECTOR. 02─3 - ├ENSOR WORD COUNTER ( ╘WIT DETECTOR ). 02─4 - ═INUTE STORAGE ( ╔╥╤ ╫INDOW ROUTINE ). ╘HIS LOCATION IS USED TO MAKE SURE THE WINDOW IS UPDATED AT LEAST ONCE A MINUTE. 02─5 - ╔NPUT INTERRUPT FLAG. ╘HIS LOCATION INDICATES TO THE ┬┴╙╔├ PORTION OF THE ┬┬╙ IF THE INPUT ROUTINE OR FILE SERVER ROUTINE WAS INTERRUPTED ABNORMALLY. ╘HIS OCCURS WHEN CERTAIN FUNCTION KEYS OR ├╧╬╘╥╧╠-├ ARE PRESSED, IF CARRIER IS DROPPED, OR A TIMEOUT ERROR OCCURS. ╓ALID VALUES ARE: #$00 = ╬ORMAL (NO INTERRUPT OCCURRED) #$08 = ╞4 KEY PRESSED #$09 = ├╘╥╠-├ KEY PRESSED #$0┴ = ╞2 KEY PRESSED #$0┬ = ╞6 KEY PRESSED #$0├ = ╞8 KEY PRESSED #$0─ = ├ARRIER DROP #$0┼ = ╘IMEOUT ERROR ┴PPROPRIATE ACTION IS TAKEN WHEN CONTROL RETURNS TO THE ┬┴╙╔├ PORTION OF THE PROGRAM. 02─6 - ├ONTROL-KEY FLAG. ╒SED WHEN ENTERING CONTROL CODES VIA THE ├╘╥╠-╨ SEQUENCE TO TELL THE ┬┬╙ NOT TO INTERPRET THE CODE AS A COMMAND, BUT TO ACCEPT IT AS NORMAL DATA. 02─7 - ╙CREEN ECHO FLAG. ╘HIS LOCATION IS USED TO DISABLE SCREEN ECHO IF SPECIFIED FOR THE CURRENT BAUDRATE. (╙WIFTLINK ONLY) 02─8 - ├URSOR POSITION SAVE. *02─9 - ╘EMPORARY WORK SPACE ( ╞ILE SERVER - WORKING VIDEO WIDTH ). *02─┴ - ╘EMPORARY WORK SPACE ( ╞ILE SERVER - CURRENT SCREEN COLUMN ). *02─┬ - ╘EMPORARY WORK SPACE ( ╞ILE SERVER - AUX BUFFERED TEXT POINTER ). *02─├ - ╘EMPORARY WORK SPACE ( ╞ILE SERVER - NEW PARAGRAPH FLAG ). *02── - ╘EMPORARY WORK SPACE ( ╞ILE SERVER - STACK POINTER SAVE ). *02─┼ - ╘EMPORARY WORK SPACE ( ╞ILE SERVER - ┴╬╙╔-SEQUENCE? FLAG ). *02─╞ - ╘EMPORARY WORK SPACE ( ╞ILE SERVER - MAIN BUFFER HEAD POINTER ). *02┼0 - ╘EMPORARY WORK SPACE ( ╞ILE SERVER - MAIN BUFFER TAIL POINTER ). *02┼1 - ╘EMPORARY WORK SPACE ( ╞ILE SERVER - MAIN BUFFER WRAP POINTER ). *02┼2 - ╘EMPORARY WORK SPACE ( ╞ILE SERVER - VALID WRAP LOC. FOUND? ). *02┼3 - ╘EMPORARY WORK SPACE ( ╞ILE SERVER - CENTER PARA DISABLE FLAG ). *02┼4 - ╘EMPORARY WORK SPACE ( ╞ILE SERVER - INDENT POSITION ). *02┼5 - ╘EMPORARY WORK SPACE ( ╞ILE SERVER - CENTER FLAG ). *02┼6 - ╘EMPORARY WORK SPACE ( ╞ILE SERVER - CURRENT "NEXT" KEY ). *02┼7 - ╘EMPORARY WORK SPACE ( ╞ILE SERVER - CURRENT "ABORT" KEY ). 02┼8 - ┬┬╙ OUTPUT - CURRENT SCREEN LINE NUMBER. 02┼9 - ┬┬╙ OUTPUT - USER'S SCREEN HEIGHT - 1. 02┼┴ - ┬┬╙ OUTPUT - WORKING SCREEN HEIGHT - 1. *02┼┬ = ╘EMPORARY WORK SPACE ( ├╘╥╠-╨ HEXADECIMAL-BINARY CONVERSION ). *02┼├ = ╘EMPORARY WORK SPACE ( ├╘╥╠-╨ HEXADECIMAL-BINARY CONVERSION ). *02┼─ = ╘EMPORARY WORK SPACE ( ═ESSAGE DATABASE ROUTINES ). *02┼┼/02┼╞ = ╘EMPORARY WORK SPACE ( ═ESSAGE DATABASE ROUTINES ). *02╞0/02╞1 = ╘EMPORARY WORK SPACE ( ═ESSAGE DATABASE ROUTINES ). *02╞2 = ╘EMPORARY WORK SPACE ( ╙┘╙ STATEMENT ARGUMENT VALUE ). *02╞3 = ╘EMPORARY WORK SPACE ( ╞ILE SERVER ROUTINE ). *02╞6 = ╘EMPORARY WORK SPACE ( ╞ILE SERVER ROUTINE - LAST KERNAL STATUS ). 02╞7 - ╥╙-232 INTERRUPT STATUS SAVE. ╘HIS IS USED BY THE PAUSE ROUTINE. 02╞8-02╞┴ - ( FOR FUTURE USE ). *02╞├/02╞─ = ╘EMPORARY WORK SPACE ( HOURS/MINUTES SAVE / DIRECTORY BLOCKS FREE ). 02╞╞ - ╙YSTEM ├ONTROL ┬LOCK (LAST 8 SWITCHES) ┬ITS ARE ARRANGED AS FOLLOWS: ┬IT 0 = ┴╬╙ ┬IT 1 = ┼╙├ ┬IT 2 = ╘╫╘ ┬IT 3 = ┴╬╧ ┬IT 4 = ╙┼┼ ┬IT 5 = ┬┴╙ ┬IT 6 = ╙├╬ ┬IT 7 = (FOR FUTURE USE) 033├ - ├URRENT DRIVE LETTER ╘HIS LOCATION STORES THE ┴╙├╔╔ VALUE OF THE CURRENT DRIVE LETTER. 033─-0354 - ├URRENT PARTITION TABLE 24 MEMORY LOCATIONS, ONE FOR EACH POSSIBLE PHYSICAL DRIVE (DEVICES 8-31). ┼ACH LOCATION CONTAINS THE ┴╙├╔╔ VALUE OF THE LAST DRIVE LETTER THAT ACCESSED THAT PHYSICAL DRIVE. ╘HIS IS USED TO DETERMINE IF THE KERNAL OVERLAY SHOULD SEND THE COMMAND CHANNEL STRING WHEN OPENING A FILE. ╘O FORCE THE ┬┬╙ TO SEND THE COMMAND CHANNEL STRING, SET THE APPROPIATE LOCATION (OR ALL LOCATIONS) TO ZERO. 0355-035─ - 300 BPS ╥╙-232 DATA (╦ERNAL ╥╙-232 ONLY) ─ATA IS ORGANIZED AS FOLLOWS: ┬YTES 1-4 = ─ATA STORED IN MOCK ╥╙-232 CONTROL REGISTERS ┬YTES 5-6 = ╥ECEIVER HALF-BIT TIME ┬YTES 7-8 = ╘RANSMITTER FULL-BIT TIME 035┼-0365 - 1200 BPS ╥╙-232 DATA (╦ERNAL ╥╙-232 ONLY) (╙EE ABOVE.) 0366-036─ - 2400 BPS ╥╙-232 DATA (╦ERNAL ╥╙-232 ONLY) (╙EE ABOVE.) 036┼-0373 - ╚AYES ╥ESPONSE ├ODE ╘ABLE (╙WIFTLINK ╥╙-232 ONLY) ╙IX BYTES, ONE FOR EACH POSSIBLE BAUDRATE. ╘HIS TABLE CONTAINS THE RESPONSE CODES THAT THE ┬┬╙ LOOKS FOR TO DETERMINE THE BAUDRATE OF THE INCOMING CALL. ╙ETABLE USING PROGRAM ╙╫-╙┼╘. 0374-0379 - ┴├╔┴ ├ONTROL ╥EGISTER ╘ABLE (╙WIFTLINK ╥╙-232 ONLY) ╙IX BYTES, ONE FOR EACH POSSIBLE BAUDRATE. ╘HIS TABLE CONTAINS THE VALUE TO BE STORED IN THE ┴├╔┴ COMMAND REGISTER FOR A PARTICULAR BAUDRATE. ╔F THE HIGH BIT IS SET, THEN LOCAL SCREEN ECHO IS DISABLED FOR THE BAUDRATE. ╙ETABLE USING PROGRAM ╙╫-╙┼╘. 037┴-037╞ - ┬AUDRATE ╓ALUE ╘ABLE (╙WIFTLINK ╥╙-232 ONLY) ╙IX BYTES, ONE FOR EACH POSSIBLE BAUDRATE. ╘HIS TABLE CONTAINS THE DISPLAYED BAUDRATE VALUE FOR EACH BAUDRATE. ╙ETABLE USING PROGRAM ╙╫-╙┼╘. 0380 - ┴╬╙╔ GRAPHICS ENABLE FLAG ┴╬╙╔ GRAPHICS IS ENABLED FOR THE USER IF THIS LOCATION IS NON-ZERO. 0381-0383 - ( FOR FUTURE USE ). 0384-03╞┬ - ╫INDOW DATA. ╘HESE LOCATIONS CONTAINS THE DATA TO BE DISPLAYED IN THE BLUE WINDOW IN THE FORM OF SCREEN CODES. ╘HIS DATA SHOULD NOT BE MODIFIED SINCE THE ┬┬╙ NOT ONLY WRITES TO THIS BUFFER, BUT IT ALSO READS THE DATA BACK SINCE SOME OF THE ┬┬╙'S MACHINE LANGUAGE ROUTINES MAY MODIFY THE WINDOW DATA. *03╞├-03╞╞ = ╞REE ╥┴═. *07╞9 = ─ATE ╨RESET FLAG ┴ VALUE OF #$7┬ HERE INDICATES THE NEXT THREE BYTES CONTAIN A VALID DATE. ╘HIS AND THE NEXT THREE BYTES ARE USED WHEN REBOOTING THE ┬┬╙ WITH A BATTERY-BACKED CLOCK CALENDAR. ╘HEN DURING THE ┬┬╙, THE FOLLOWING 2 BYTES CONTAIN THE HOUR AND MINUTE. *07╞┴ = ─ECIMAL YEAR (0-99) / CURRENT HOUR *07╞┬ = ─ECIMAL MONTH (1-12) / CURRENT MINUTE *07╞├ = ─ECIMAL DAY (1-31) 0800-9┼33 - ├OMPILED ┬┴╙╔├ PORTION OF ┬┬╙ & VARIABLE AREA. 9┴6├ - ├╚┴╬╟┼ ┬┴╒─ ┼NTER (╙.5 ═ACHINE ╠ANGUAGE ═ODULE) ╘HIS IS USED TO CHANGE THE SERIAL PORT BAUDRATE. ╔T CAN MAKE AN UNCONDITIONAL CHANGE, OR MAKE THE CHANGE ONLY IF THERE IS NO CARRIER. 9┴6╞ - ╘┼╥═╔╬┴╠ ┼NTRY ╘HIS ROUTINE SWAPS IN THE TERMINAL MODE, RUNS IT, AND SWAPS THE TERMINAL MODE OUT BEFORE EXITTING. 9┴72 - ╘╧╟╟╠┼ ─╘╥ ┼NTRY ╘HIS IS A HARDWARE METHOD OF HANGING UP SOME MODEMS. 9┴75 - ╘╥┴╬╙╞┼╥ ╘┼╥═╔╬┴╠ ═╧─┼ ╔╬/╧╒╘ ┼NTRY ╘HE TERMINAL MODE ROUTINE IS LOCATED IN THE ╥┴═ UNDER THE ╔/╧ PORT AREA. ╘HIS ROUTINE SWAPS THAT ╥┴═ (─000) WITH THE ╥┴═ AT 6000 SO THE TERMINAL PROGRAM CAN BE USED. 9┴78 - ╧╨┼╬ ╞╔╠┼ ┼NTRY ╘HIS ROUTINE HANDLES THE KERNAL OVERLAY. ╔T IS CALLED WHENEVER A FILE IS OPENED. ╒SE THE KERNAL ╧╨┼╬ VECTOR TO OPEN A FILE. 9┴7┬ - ├┼╬╙╧╥ ┼NTRY ╘HIS ROUTINE CLEARS THE CENSOR WORD COUNT AND EITHER BLANKS OUT WORDS FOUND OR COUNTS THE WORDS FOUND. 9┴7┼ - ├┼╬╙╧╥ ┼NTRY (ALTERNATE) ╘HIS DOES THE SAME THING EXCEPT IT DOESN'T RESET THE WORD COUNT. 9┴81 - ├┼╬╙╧╥ ├╧╒╬╘ ╥┼╙┼╘ ┼NTRY ╘HIS RESETS THE CENSOR WORD COUNT. 9┴84 - ╟┼╘ ┴ ├╚┴╥┴├╘┼╥ ┼NTRY (FOR FILE SERVER) ╘HIS ROUTINE IS CALLED BY THE FILE SERVER TO GET A CHARACTER FROM A FILE OR THE EDIT BUFFER. ╔T HANDLES SOME OF THE SPECIAL ├═─╥ CODES IN THE FILE INCLUDING RESOLVING THE ├═─╥-┬ ┬┴╙╔├ EXPRESSIONS. 9┴87 - ├═─╥-╞ ╨╥╧├┼╙╙╧╥ ┼NTRY (FOR FILE SERVER) ╘HIS ROUTINE IS CALLED BY THE FILE SERVER WHENEVER A ├═─╥-╞ CODE IS DETECTED. ╔T STORES THE KEYS AND FILENAMES IN A 256-BYTE BUFFER. ╔T IS ALSO USED TO PERFORM THE KEY TEST AND THE ACTUAL BRANCHING TO THE NEW TEXT FILE. 9┴8┴-9╞┼6 - ╙.5 ═ACHINE ╠ANGUAGE ═ODULE *9╞┼7 = ╥╙-232 STATUS REGISTER ( ╪╧╥'ED ) ╘HE ╔╥╤ ROUTINE CHECKS THE ╥╙-232 STATUS EVERY 1/60TH OF A SECOND, ╪╧╥'S THE VALUE FOUND THERE WITH ╪╧╥ VALUE (@ 02┬─H), AND STORES THE RESULT HERE. ┴LL CHECKS FOR CARRIER SHOULD BE CHECKED HERE. ├ARRIER IS PRESENT WHEN BIT 4 (VALUE = 10H) IS 0. ├ARRIER SHOULD BE CHECKED AS FOLLOWS: LDA $9FE7 ; GET RS-232 STATUS AND #$10 ; MASK ALL BITS EXCEPT CARRIER AND $02A9 ; MASK WITH CARRIER-DETECT MASK BNE -NO CARRIER- -CARRIER- *┴000-┬157 = ┼DITOR, ╞ILE COPIER, ═ODULE BUFFER ╠OCATION $┴000 NORMALLY CONTAINS A #$0─ (├╥), FOLLOWED BY THE EDIT BUFFER TEXT, WITH A ╬╒╠╠ BYTE USED AS AN ┼╧╘ CHARACTER. ╘HE ┬┬╙'S FILE COPIER AND LOADABLE MACHINE LANGUAGE MODULES WILL OVERWRITE ANY EDIT BUFFER TEXT. ╔F THE EDIT BUFFER TEXT IS OVER- WRITTEN, THEN THE ┬┬╙ WILL CLEAR THE EDIT BUFFER BEFORE THE NEXT ├╧══┴╬─ PROMPT SO THAT THE USER WILL NOT SEE ANY GARBAGE CHARACTERS IN THE BUFFER. ┬158-┬┬4─ - ╙.3 CONFIGURATION FILE BUFFER ├ONTAINS THE CENSOR VOCABULARY, A ╬╒╠╠, ╦ERNAL OVERLAY (EACH ENTRY FOLLOWED BY A ╬╒╠╠), AND THE EDITABLE PHRASES (EACH ENTRY FOLLOWED BY A ╬╒╠╠). ┬┬4┼ - ┼─╔╘╧╥/╞╔╠┼ ╙┼╥╓┼╥ ┼NTRY. ┴LL MACHINE LANGUAGE FUNCTIONS OF THE EDITOR (WRITING, LISTING, EDITTING, LOADING AND SAVING), AS WELL AS THE FILE SERVER ROUTINE (USED TO DISPLAY ALL TEXT FROM DISK SUCH AS MESSAGES, EMAIL, ╙╔╟FILES, ETC), ARE CALLED THROUGH THIS LOCATION. ┬┬51 - ├┼╬╙╧╥ ┼NTRY. ╘HIS IS ┬┴╙╔├'S ENTRY INTO THE CENSOR ROUTINE. ╘HIS ENTRY IS USED BY THE TWIT DETECTOR. ╔T JUMPS DIRECTLY TO THE ├┼╬╙╧╥ ENTRY IN THE ╙.5 MODULE. ┬┬54-┬╞╞╞ - ╙.4 ═ACHINE ╠ANGUAGE ═ODULE *├000-├11┬ = ╘EMPORARY STORAGE BUFFERS. ╘HIS AREA IS USED BY THE ┬┬╙ AS BUFFERS FOR THE EDITOR SEARCH AND REPLACE ROUTINES, LIST ROUTINES, AND THE ┬┬╙ LINE EDITOR. ╘HIS AREA MAY BE USED BY MODULES IN ANY MANNER. ╘HERE IS ENOUGH ROOM HERE FOR ONE 256-BYTE OR TWO 128-BYTE FILE TRANSFER BUFFERS. ┘OU CAN ALSO USE IT TO STORE SHORT MACHINE LANGUAGE ROUTINES SUCH AS A ROUTINE TO SWITCH IN THE ┬┴╙╔├ ╥╧═ TEMPORARILY, CALL A SUBROUTINE, AND SWITCH ┬┴╙╔├ BACK OUT. ├11├-├15┬ - ├ENSOR VOCABULARY INDEX (ALLOWS FOR UP TO 64 ENTRIES). ╘HIS INDEX IS USED TO HELP SPEED THINGS UP FOR THE NASTY-WORD- CHECKER. ╔T CONTAINS THE LENGTH OF EACH WORD IN THE VOCABULARY. ├15├ - ─╘╩ ═.╠. ╔╬╔╘ ╘HIS INITIALIZES THE MACHINE LANGUAGE PORTIONS OF THE ┬┬╙, CHANGING KERNAL VECTORS, ETC. ╔T IS ONLY USED WHEN THE ┬┬╙ IS FIRST LOADED. ─O NOT USE THIS LOCATION BECAUSE IT MAY BE USED FOR OTHER THINGS IN THE FUTURE. ├15╞ - ┼─╔╘╧╥/╞╔╠┼ ╙┼╥╓┼╥ ╙ETUP ┼NTRY. ╙WITCHES ┬┴╙╔├ OUT AND JUMPS TO ┬┬4┼ (┼─╔╘╧╥/╞╔╠┼ ╙┼╥╓┼╥ IN THE S.4 MODULE). ├162 - ╔╬╘┼╥╥╒╨╘ ├╚┼├╦┼╥ ┼NTRY. ┴LSO CALLED BY THE ╠╔╬┼ ┼─╔╘╧╥ ROUTINE. ╔T CHECKS TO SEE IF THE KEY LAST PRESSED OR THE CHARACTER LAST RECEIVED IS A ┬┬╙ INTERRUPT CHARACTER (I.E. ├╘╥╠-├, A FUNCTION KEY, ├═─╥-STATUS-CHANGE ETC). ╔T ALSO CHECKS FOR CARRIER DROPS. ╔T THE KEY IS, IT EITHER PROCESSES THE KEY AND RETURNS WITH CARRY CLEAR, OR IT SETS CARRY AND THEN RETURNS. ├ARRY SET INDICATES THAT THE CALLING ROUTINE SHOULD RETURN TO ┬┴╙╔├ SO THAT THE ┬┴╙╔├ PORTION OF THE ┬┬╙ CAN PROCESS THE INTERRUPT KEY. ├165 - ─╔╥┼├╘╧╥┘ ╥┼┴─┼╥ ┼NTRY ─ISPLAYS DISK DIRECTORY. ╘HE DIRECTORY FILE MUST BE OPEN AND ┬┴╙╔├ MUST BE SWITCHED IN. ═EM-LOC (02╞2) = #$00 - ╬ORMAL DISK DIRECTORY FORMAT = #$01 - ╙╔╟FILE DISK DIRECTORY FORMAT ├168 - ╙╘┴├╦ ╥┼╙┼╘ ┼NTRY ╒SED TO RESET THE STACK (CLEAR OFF ALL ╟╧╙╒┬ RETURN ADDRESSES) AT ├╧══┴╬─ PROMPTS. ─O NOT USE! ├16┬ - ─╔╙╨╠┴┘ ╧╞╞-╠╔╬┼ ╙├╥┼┼╬ ┼NTRY. ─ISPLAYS THE BACKGROUND FOR AWAITING-CALL SCREEN. ├16┼ - ─╔╙╨╠┴┘ ╙╚┴╥┼╫┴╥┼ ╙├╥┼┼╬ ┼NTRY. ─ISPLAYS THE SHAREWARE SCREEN (╙╚╔╞╘/├╘╥╠ SCREEN). ├171 - ─╔╙╨╠┴┘ ╙.3 ╞╔╠┼ ┼─╔╘┴┬╠┼ ╨╚╥┴╙┼ ┼NTRY. ╘HIS ROUTINE DISPLAYS DATA INDICATED IN THE ╙.3 EDITABLE PHRASES. ╔T DISPLAYS THE TEXT, DISPLAYS A FILE, OR RUNS A MODULE. ├174 - ╬╧╬-├┴╙┼-╙┼╬╙╔╘╔╓┼ ╙╘╥╔╬╟ ├╧═╨┴╥┼ ┼NTRY. ├OMPARES TWO STRING VARIABLES. ╘HIS ROUTINE COMPARES ONLY CHARACTERS UP TO THE LENGTH OF THE SECOND STRING. ├177 - ╞╔╠┼-├╧╨╔┼╥ ─╔╙╦ ╥┼┴─ ┼NTRY. ╥EADS BLOCKS INTO THE EDIT BUFFER. ├17┴ - ─╔╙╦ ╠╔╬┼-╔╬╨╒╘ ┼NTRY. ╒SED TO INPUT A STRING INTO ONE OR MORE VARIABLES. ╙IMILAR TO ╠╔╬┼ ╔╬╨╒╘ IN OTHER ┬┴╙╔├S. *├17─ = ╟┼╘ ├╚┴╥┴├╘┼╥ ┼NTRY. ┴LL ┬┬╙ INPUTS USE THIS ROUTINE TO ACCEPT DATA FROM THE USER. ╘HIS ROUTINE CALLS THE ╔╬╘┼╥╥╒╨╘ ├╚┼├╦┼╥ AND WILL RETURN WITH CARRY SET IF AN INTERRUPT REQUEST OCCURS DUE TO CARRIER DROP, ├╘╥╠-├, AND CERTAIN FUNCTION KEYS ARE PRESSED. ═ODULES USING ╟┼╘ ├╚┴╥┴├╘┼╥ SHOULD EXIT AS SOON AS POSSIBLE SO THAT THE ┬┬╙ CAN PROCESS THE INTERRUPT. ├180 - ╟┴╥┬┴╟┼ ├╧╠╠┼├╘╧╥ ┼NTRY. ╘HIS ROUTINE ERASES CERTAIN STRING VARIABLES TO PROVIDE FOR A FASTER GARBAGE COLLECTION. ╟ARBAGE COLLECTION OCCURS BEFORE THE ├╧══┴╬─ PROMPT. ├183 - ╞╔╠┼-├╧╨╔┼╥ ─╔╙╦ ╫╥╔╘┼ ┼NTRY. ╫RITES DISK BLOCK INFO FROM THE EDIT BUFFER TO THE DISK. ├186 - ─╔╙╨╠┴┘-╘╥┴╬╙╠┴╘┼ ┼NTRY. ╒SED INTERNALLY TO MAP SOME OF THE ┴╙├╔╔ CODES TO THEIR CLOSEST ├┬═-┴╙├╔╔ VISUAL EQUIVALENT. ├189 - ╙╦╔╨ ┬┴═ ┼NTRY. ╒SED TO SKIP THE ┬┴═ ENTRY WHEN READING A TRACK & SECTOR DIRECTORY. ├18├ - ╦╔╠╠ ╥╧╧═ ┼NTRY. ╥EPLACES ALL OCCURANCES OF A SPECIFIC ROOM CODE IN THE MESSAGE INDEX WITH A DIFFERENT CODE. ╒SED TO CLEAR ALL MESSAGES FROM A ROOM. ├18╞ - ╞╔╬─ ╔╬─┼╪ ╞╥╧═ ═┼╙╙┴╟┼ ╬╒═┬┼╥ ┼NTRY ╞INDS THE POSITION IN THE MESSAGE INDEX OF THE MESSAGE NUMBER GIVEN BASED ON WHAT THE CURRENT ROOM IS. ├192 - ╙┼╘ ╒╨ ╥╧╧═ ┼NTRY ╞INDS INFORMATION ABOUT ROOM. ├195 - ╥╧╧═ ╚╧╒╙┼╦┼┼╨╔╬╟ ┼NTRY ├HECKS FOR UNUSED ROOMS AND DELETES THEM. ├198 - ═┼╙╙┴╟┼-╔╬─┼╪ ╠╧┴─ ╠OADS THE MESSAGE INDEX FROM THE ┬┴╙┼╙ FILE INTO MEMORY. ├19┬ - ═┼╙╙┴╟┼-╔╬─┼╪ ╙┴╓┼ ╙AVES THE MESSAGE INDEX FROM MEMORY TO THE ┬┴╙┼╙ FILE. ├19┼ - ╥╧╧═ ╙╧╥╘ ├REATES A SORTING INDEX FOR THE SIG/ROOM LIST. ├1┴1 - ╔╬╘┼╥╬┴╠ ╥╧╧═ ─┴╘┴ ╘┴┬╠┼ ╙┼╘╒╨ ╘HIS ROUTINE SETS UP TABLES WHICH CONTAIN STATISTICS ABOUT EACH ROOM'S MESSAGES. ├1┴4 - ╞╔╬─ ╨╚╥┴╙┼ ╘HIS ROUTINE FINDS AN EDITABLE PHRASE ENTRY IN THE ╙.3 FILE DATA. ├1┴7 - ─╔╙╨╠┴┘ ╫╔╬─╧╫ ╘HIS ROUTINE DISPLAYS THE WINDOW DATA. ╔T IS CALLED BY THE ╔╥╤ ROUTINE WHEN THE ╔╥╤ ROUTINE AND BY ┬┴╙╔├. ├1┴┴-├╞╞╞ - ╙.2 ═ACHINE ╠ANGUAGE ═ODULE *─├08-─├0┬ = ╘╧─ ├LOCK #1 - ╒SED FOR TIME-OF-DAY. *──08-──0┬ = ╘╧─ ├LOCK #2 - ╒SED FOR USER'S SESSION TIMER ┼000-┼─┴┬ - ═ESSAGE INDEX. ┼ACH POSITION INDICATES THE ROOM NUMBER + #$40 OF EACH MESSAGE. ╞72├-╞─01 - ╙.6 ═ODULE ╘HIS CONTAINS THE AWAITING-CALL AND SHAREWARE SCREENS; EACH ARE ╬╒╠ TERMINATED. ╞─15-╞─46 - ╬EW ═ESSAGE ╨OINTERS (LOW BYTES) ╞─47-╞─78 - ╬EW ═ESSAGE ╨OINTERS (HI BYTES) ╘HESE LOCATIONS CONTAIN POINTERS TO THE NEWEST MESSAGES THAT THE USER HAS READ FOR EACH ROOM. ╘HESE POINTERS ARE USED TO COMPUTE THE NUMBER OF OLD AND NEW MESSAGES THE USER HAS. ╞─79-╞─┴┴ - ╬UMBER OF ═ESSAGES (LOW BYTES) ╞─┴┬-╞──├ - ╬UMBER OF ═ESSAGES (HI BYTES) ╘HESE LOCATIONS CONTAIN THE NUMBER OF MESSAGES IN EACH ROOM. ╫HEN THE USER ENTERS A DIFFERENT ROOM, A MACHINE LANGUAGE ROUTINE LOOKS UP THE NUMBER AND STORES IT AT $02┼┼/02┼╞. ╞───-╞┼0┼ - ╬UMBER OF ╧LD ═ESSAGES (LOW BYTES) ╞┼0╞-╞┼40 - ╬UMBER OF ╧LD ═ESSAGES (HI BYTES) ╘HESE LOCATIONS CONTAIN THE NUMBER OF OLD MESSAGES IN EACH ROOM. ╫HEN THE USER ENTERS A DIFFERENT ROOM, A MACHINE LANGUAGE ROUTINE LOOKS UP THE NUMBER, ADDS 1 TO IT (SO IT BECOMES THE MESSAGE NUMBER OF THE FIRST NEW MESSAGE), AND STORES IT AT $02┬8/02┬9. (┴LL OTHER ╥┴═ UNDER THE ╦ERNAL ╥╧═ IS AND MUST REMAIN A COPY OF THE ╦ERNAL ╥╧═. ╘HIS ALLOWS FOR THE USE OF THE ╬═╔ INTERRUPT ROUTINES WHEN THE ╥╧═ IS SWITCHED OUT.) ------------------------------------------------------------------------------ ╘HE FOLLOWING ╥╧═ VECTORS HAVE BEEN CHANGED: 0308/0309 - ╔╟╧╬┼ - ╘O ALLOW EXECUTION OF ┬┴╙╔├ EXTENSIONS. 0314/0315 - ╔╥╤ - ╘O ENABLE THE ┬┬╙ WINDOW AND CARRIER-DETECT ROUTINES. 0318/0319 - ╬═╔ - ╘O LESSEN THE CHANCE OF LOCKING UP THE COMPUTER IF THE ╥┼╙╘╧╥┼ KEY IS PRESSED, AND ALSO TO DISPLAY THE DIAGNOSTIC SCREEN WITH ╥╒╬/╙╘╧╨ & ╥┼╙╘╧╥┼. ┴LSO HANDLES ╙WIFTLINK ╬═╔ ROUTINES IF ╙WIFTLINK IS ACTIVE. *031┴/031┬ = ╧╨┼╬ - ╘O ENABLE THE KERNAL OVERLAY. *031┼/031╞ = ├╚╦╔╬ - ╘O ALLOW THE USE OF DEVICE 4 TO READ THE EDIT BUFFER. ╒SED ONLY BY THE FILE SERVER WHEN LISTING THE EDIT BUFFER. *0320/0321 = ├╚╦╧╒╘ - ╘O HANDLE THE PROPER CHANNEL NUMBER FOR THE ┬┬╙ OUTPUT CHANNEL DEPENDING ON THE CARRIER MASK. *0326/0327 = ├╚╥╧╒╘ - ┬┬╙ OUTPUT DRIVER. ╚ANDLES ALL MODEM/DISPLAY OUTPUT. *032┴/032┬ = ╟┼╘╔╬ - ┬┬╙ INPUT DRIVER. ╚ANDLES ALL MODEM/KEYBOARD INPUT. (┬┬╙ DOES NOT USE ├╚╥╔╬ FOR KEYBOARD OR ╥╙-232 INPUT!) ╨LEASE DO NOT CHANGE ANY VECTORS! ------------------------------------------------------------------------------ ┬┴╙╔├ ╓ARIABLE ╠ISTING: ------------------------------------------------------------------------------ ┘OU MAY FIND VARIABLES MARKED WITH AN * USEFUL IN YOUR OWN MODULES OR IN ┬┴╙╔├ EXPRESSIONS IN THE FILE SERVER. (╙INCE THE ┬┴╙╔├ ╥╧═ IS SWITCHED OUT WHEN EXECUTING A MODULE, YOU MUST DEVISE YOUR OWN ROUTINE FOR ACCESSING VARIABLES IF YOU NEED TO.) A - ├ONSTANT = 56577 A$ - ╘EMP - ╚AYES COMMAND TO SEND A% - ┴CCOUNT - ╙╔╟-BULLETIN READ FLAGS AA - ╘EMP AA$ - ┴CCOUNT - ┴CCESS AC - ┴CCOUNT - ╬UMBER OF CALLS AD - ┴CCOUNT - ╬UMBER OF DOWNLOADS AD$ - ┴CCOUNT - ─ATE OF LAST CALL AE - ┼DITOR MODE FLAG (USED TO DETERMINE WHERE EDITOR IS CALLED FROM) AF - ┴CCOUNT - ┼MAIL FORWARDING ACCOUNT NUMBER AH$ - ┴CCOUNT - ╬EW MESSAGE POINTERS (ENCODED) AI - ┴CCOUNT - ╬UMBER OF MESSAGES POSTED (SYSTEM TOTAL) AL - ┴CCOUNT - ╬UMBER OF BAD LOGOFFS. AM - ┴CCOUNT - ╬UMBER OF MESSAGES POSTED (USER'S TOTAL) AN$ - ┴CCOUNT - ╬AME AN% - ┴CCOUNT - ╙AVED MESSAGES AS OLD OR NEW FLAG AP - ╨═-TO-┴═ TRACKER (USED FOR MIDNIGHT HOUSEKEEPING). AP$ - ┴CCOUNT - ╨ASSWORD *AR% - ╞ILESERVER AUTO-RETURN FLAG AS$ - ┴CCOUNT - ╙TATUS AT - ┴CCOUNT - ─AILY TIME LIMIT AT% - ┴CCOUNT - ╘IME USED TODAY (PREVIOUS SESSIONS ONLY) AU - ┴CCOUNT - ╬UMBER OF UPLOADS AV - ┴CCOUNT - ╓IDEO ╫IDTH AX - ╘EMP AX$ - ┴CCOUNT - ╨ROTOCOL B - ┬AUDRATE VALUE / ╘EMP B$ - ╘EMP *B$(*) = ╥OOM ╬AME ┴RRAY (╓ALID INDEX IS 1 TO 50. ╒NUSED ROOMS ARE NULL.) *B%(*) = ╥OOM ╙TATUS ┴RRAY (╓ALID INDEX IS 1 TO 50. ╘HE VALUE RETURNED IS AS FOLLOWS: BITS 0-3 = ╙╔╟ ROOM IS ASSIGNED TO (0 MEANS ROOM NOT IN USE), BIT 4 = BIT 5 = ╠OGOFF MESSAGE ROOM FLAG, BIT 6 = ╥EAD-ONLY FLAG, BIT 7 = ╠OCKED ROOM FLAG, BIT 8 = ┴NONYMOUS ROOM FLAG. ╬OTE THAT AN UNUSED ROOM MAY BE LOCKED SO THAT IT CANNOT BE CREATED.) *BN = ├URRENT ROOM INDEX NUMBER (╓ALID NUMBER IS 1 TO 50. 0 MEANS USER IS NOT IN A ROOM.) C$ - ╠AST COMMAND SEQUENCE ENTERED. C% - CARRIER ╪╧╥ VALUE CA - ├ARRIER STATUS (USED IN ├╚┴╘ MODE) CC - ├ARRIER ─ETECT ┬IT ═ASK CM - ├OMMAND-ENTERED FLAG (OTHER THAN CHAT OR DOWNLOAD) *CM% - NUMBER OF REMAINING BUFFERED COMMANDS *CN = ╬UMBER OF CALLS RECEIVED. CR$ - ├ONSTANT - ├╚╥$(13) D - ╘EMP - ─RIVE D$ - ╘EMP - ─ATE STRING (INCLUDES DAY OF WEEK) *D$(*) = ╙╔╟ ┬ULLETIN ─ATE-LAST-MODIFIED ┴RRAY (╙TRING IN ┘┘══── FORMAT.) *D% = ╒SER - ╙╔╟-BULLETIN READ FLAGS (┼ACH BIT REPRESENTS A ╙╔╟ BULLETIN THAT THE USER HAS READ.) *D%(*) = ═ESSAGE/DRIVE ┴LLOCATION ┴RRAY (╓ALID INDEX IS 0 TO 25 FOR DRIVES A TO Z. ┼ACH ENTRY INDICATES THE NUMBER OF MESSAGES ON THAT DRIVE.) DB - ─EFAULT BAUDRATE *DD = ─AY ╧F ═ONTH (┬ETWEEN 1 AND 7, STARTING AT ╞RIDAY.) DN - (FOR FUTURE USE) *DW = ─AY ╧F ╫EEK (1 TO 31.) E - ╘EMP - ─╧╙ ┼RROR ╬UMBER E$ - ╘EMP *E%(*) = ┼MAIL ╘YPE/╥ECEIVER ─ATA ┴RRAY (╓ALID INDEX FROM 1 TO VARIABLE ME. ╓ALUE IS ACCOUNT NUMBER PLUS 1024 IF CERTIFIED, PLUS 3072 IF URGENT. 0 INDICATES AN AVAILABLE EMAIL SLOT.) E2$ - ╘EMP - ─╧╙ ┼RROR ├HANNEL ┬UFFER ED - *ED(*) = ┼MAIL ─ATE-SENT ┴RRAY (╓ALID INDEX FROM 1 TO VARIABLE ME. ╓ALUE IS DATE IN ┘┘┘┘══── FORMAT. 0 INDICATES AN AVAILABLE EMAIL SLOT.) EN$ - ├ONSTANT = "┼NTER " EU - ┼MAIL ┴CCOUNT TO ╥EAD F$ - ╘EMP - ╞ILENAME F0 - (FOR FUTURE USE) F1$ - ╘EMP - ╞ILENAME F1 - (FOR FUTURE USE) F2$ - ╘EMP - ╞ILENAME F2 - (FOR FUTURE USE) F3 - (FOR FUTURE USE) F4 - (FOR FUTURE USE) *FA = ╞IRST ┴VAILABLE ┴CCOUNT ╬UMBER FD - ╠AST ═ESSAGE ┼DITTED (┼ITHER DRIVE OR BASE INDEX NUMBER) FR$ - ╘EMP - NAME & ACCOUNT NUMBER OF USER POSTING MESSAGE G$ - ╘EMP - ├URRENT ╙╔╟ ╠ETTER H$ - ╚AYES ┼SCAPE ╙EQUENCE ┴╙├╔╔ ├HARACTER (╘HE CHARACTER MUST BE SENT 3 TIMES FOR THE ╚AYES ESCAPE SEQUENCE.) HI - ╔NDEX TO ╬EXT ═ESSAGE TO ╙AVE (╒SED TO DETERMINE THE START/END POINTS OF THE MESSAGE INDEX BUFFER. ╘HIS IS A POINTER TO THE NEXT MESSAGE TO BE SAVED. ╔T ALSO POINTS TO THE OLDEST MESSAGE IN THE SYSTEM ONCE THE MESSAGES HAVE STARTED CYCLING.) *HL = ═AX NUMBER OF MESSAGES ┬┬╙ CONFIGURED TO HANDLE I - ╘EMP I$ - ╘EMP - ╠INE ┼DITOR ╔NPUT ╙TRING I1 - ╘EMP I2 - ╘EMP I3 - ╘EMP ID - ╞ILE ╙ERVER & ┼DITOR ╔NTERRUPT ╘YPE II$ - ╘EMP - ╠INE ┼DITOR ╔NPUT ╙TRING (╒PPERCASE) J - ╘EMP J$ - ╘EMP - ╫INDOW ┬UILDER K$ - ├ONSTANT = "------" L - ╘EMP - ╠INE ┼DITOR ═AXIMUM ╠ENGTH L$ - ╘EMP LB$ - ├ONSTANT = ":A.╠╧╟┬╧╧╦" *LC$ = ╠AST ├ALLER'S ╬AME *LG = ╠OGOFF ═ESSAGES ┴VAILABLE FLAG (┴NY NON-ZERO VALUE MEANS LOGOFF MESSAGES ARE AVAILABLE.) LM$ - ├ONSTANT = ":E-SYS" LS - ╘EMP LT - ╠T╦ERNAL ╥╧═ FLAG (┴NY NON-ZERO VALUE INDICATES THE PRESENCE OF A ╠T╦ERNAL HARD DRIVE. ╘HIS WAS FOR FUTURE USE OF ╠T╦ERNAL HARD DRIVES BUT WILL PROBABLY NEVER BE IMPLIMENTED.) M$ - ├ONSTANT - ├╚╥$(13) M0$ - ╚AYES ┬┬╙ ╔NITIALIZATION ╙EQUENCE (┼ACH COMMAND SENT IS SEPARATED WITH A SPACE.) M1$ - ╚AYES ╘ERMINAL ╔NITIALIZATION ╙EQUENCE (┼ACH COMMAND SENT IS SEPARATED WITH A SPACE.) M2$ - ╚AYES ╚ANGUP ╙EQUENCE (╚AYES COMMAND TO SEND AFTER SENDING THE ESCAPE SEQUENCE.) M3$ - ╚AYES ═ODEM ╧FF-HOOK ╙EQUENCE *ME = ═AXIMUM PIECES OF EMAIL ┬┬╙ CAN HANDLE *MM = ═ONTH (1 TO 12. 0 INDICATES ┬┬╙ IS DISABLED.) *MN = ╬UMBER ╧F ═ESSAGES ╔N ╥OOM *MP = ╬UMBER ╧F ═ESSAGES ╨OSTED (╘HIS IS THE SYSTEM TOTAL. ╓ARIABLE HI IS DERIVED FROM THIS VARIABLE.) MS$ - ├ONSTANT = "ESSAGE" N$ N% - ╒SER - ╙AVED MESSAGES AS OLD OR NEW FLAG (┴NY NON-ZERO VALUE WILL MAKE SAVED MESSAGES AS NEW.) N%(*) - ╒SER - ╬EW MESSAGE POINTERS (╓ALID INDEX IS 1 TO 50 REPRESENTING ROOM NUMBERS. ┼ACH ARRAY ELEMENT IS A POINTER TO THE LAST MESSAGE READ IN THE ROOM. ╘HIS ARRAY IN CONJUNCTION WITH VARIABLES MP AND UI TELL THE ┬┬╙ WHICH MESSAGES ARE NEW.) NA$ - ├ONSTANT = "╬╬╬╬╬╬╬╬╬╬╬╬╬╬" (USED TO CHECK FOR MINIMUM ACCESS) NB - ═ESSAGE ╬UMBER *NM = ╬UMBER ╧F ╬EW ═ESSAGES ╔N ╥OOM (╔F 0, THEN ROOM IS EMPTY.) NM$ - ╬EW ╒SER ╤UESTIONAIRE ╬AME ╨ROMPT (I.E. "╬AME:", "╚ANDLE:", ETC.) NY$ - ├ONSTANT - "┴NONYMOUS" O$ - ├ONSTANT - ├╚╥$(0) P$ - ├ONSTANT - "RESS ╥┼╘╒╥╬" PS - ═ESSAGE ╔NDEX Q - ╘EMP Q$ - ╘EMP *Q$(*) = ┬UFFERED COMMANDS / ┴NSWERS TO ╤UESTIONAIRE / ╥OOM/╙╔╟ INFO (╘HIS ARRAY CONTAINS BUFFERED COMMANDS WHEN THE ├═% VARIABLE IS SET. ╧THERWISE, AT THE ├╧══┴╬─ PROMPT, THE FOLLOWING FORMATTED DATA EXISTS: ╤$(0) = ├URRENT ROOM NAME, ╤$(1) = ╬UMBER OF NEW MESSAGES IN ROOM, ╤$(2) = ├URRENT ╙╔╟ NAME, ╤$(3) = ╬UMBER OF MESSAGES IN ROOM. ─ATA IS PADDED WITH SPACES.) Q0 - ╘EMP - ├URRENT ╤UESTION ╨OINTER QA$(*) - ┬UFFERED COMMAND ARGUMENTS / ╬EW ╒SER ╤UESTIONAIRE QB%(*) - ═AXIMUM ╬UMBER OF ├HARACTERS ┴LLOWED IN ╤UESTIONAIRE QQ - ╬UMBER OF ╤UESTIONS IN ╤UESTIONAIRE R - ├ONSTANT = 50 (═AXIMUM ╬UMBER OF ╥OOMS - DO ╬╧╘ CHANGE) R$ - ╘EMP R1 - ╘EMP - ╙TARTING ═ESSAGE IN ╙EQUENCE R2 - ╘EMP - ┼NDING ═ESSAGE IN ╙EQUENCE RD - ─ISABLE REMOTE-ENABLE FLAG (I.E. DATE = "999999"). RE - ╘EMP *RT$ - ╬AME OF ╥┼╘╒╥╬ KEY (╔F THE CURRENT VIDEO WIDTH IS 40 OR LESS, THIS VARIABLE CONTAINS THE TEXT "╥┼╘╒╥╬", OTHERWISE IT CONTAINS "┼╬╘┼╥".) S$ - ╥OOM/╙╔╟ ╙ORT ╔NDEX *S$(*) = ╙╔╟ ╬AME ┴RRAY (╓ALID INDEX IS 0 TO 14. ╘HIS ARRAY CONTAINS THE NAMES OF EACH ╙╔╟. ┴ NULL SIGNAME IS A HIDDEN ("DELETED") ╙╔╟. *S1 = ─EFAULT ╓IDEO ╫IDTH (╓ALID VIDEO WIDTH IS 20 TO 80. ╨LEASE DO NOT EXCEED THIS RANGE.) S1$ - ╥ECOVERY ╨ASSWORD (╒SED FOR REMOTE ENABLING.) *S2 = ═AXIMUM ╬UMBER OF ╒SERS (╓ALID NUMBER IS FROM 1 TO 999. ─O NOT EXCEED 999.) S2$ - ╬EW ╒SER ┴CCESS *S3 = ─EFAULT ╘IME ╠IMIT (─EFAULT DAILY TIME LIMIT.) S3$ - ╒NLOGGED-ON ╒SER ┴CCESS S4 - ┴CCOUNT DRIVE (┴╙├╔╔ VALUE OF DRIVE LETTER.) S5 - ┼MAIL DRIVE (┴╙├╔╔ VALUE OF DRIVE LETTER.) S6$ - ╙╔╟ ─OWNLOAD DRIVES (15 DRIVE LETTERS.) S8 - ├URRENT UPLOAD DRIVE (┴╙├╔╔ VALUE OF DRIVE LETTER.) S8$ - ╙╔╟ ╒PLOAD DRIVES (15 DRIVE LETTERS.) S9 - ═ODEM TYPE (1 = 1650 OR COMPATABLE, 2 = 1670/╚AYES OR COMPATABLE, 3 = 1660 OR COMPATABLE.) SC$ - ├ONSTANT = "├╚╘├┼╬═╧╬╬┼╫╨┴╙├╥┼╞╒╠╙┘╙┴╬╙┼╙├╘╫╘┴╬╧╙┼┼---------" SF - ╠OGOFF ═ESSAGE DRIVE (┴╙├╔╔ VALUE OF DRIVE LETTER.) SL - ╠OGOFF ═ESSAGE ROOM (├ONTAINS THE ROOM NUMBER OF THE ROOM THAT LOGOFF MESSAGES ARE TO BE SAVED TO. ╠OGOFF MESSAGES ARE SAVED TO "E.SYS" FILE IF THIS VARIABLE IS 0. ╘HE ┬┬╙ SCANS THE ROOM STATUS ARRAY AND STORES THE APPROPRIATE VALUE HERE.) SK - ╙AVE ╦┼┼╨ FLAG SN - (FOR FUTURE USE) *SP$ = 80 SPACES (USED FOR PADDING) SU - (FOR FUTURE USE) T - ╘EMP / ╬UMBER OF TRIES LEFT / ╠OGOFF TYPE T0 - ╘EMP T1 - ╘EMP *T2 = ╒SER - ╘IME ╧NLINE ╘ODAY (╘OTAL) (├URRENT AMOUNT OF TIME, IN MINUTES, THAT THE USER HAS BEEN ONLINE TODAY. ╒SED IN CONJUNCTION WITH VARIABLE UD$ (TO DETERMINE IF USER HAS BEEN ONLINE TODAY OR IF USER'S TIMELIMIT CAN BE RESET).) T3 - ╘EMP T4 - ╘EMP T9 - ╘EMP *TW = ╒SER - ╘WIT ╠EVEL (╓ALID RANGE BETWEEN 0 AND 255.) *U = ╒SER - ┴CCOUNT ╬UMBER (╓ALID RANGE BETWEEN 0 AND 999. ╔F ZERO, THEN USER IS NOT LOGGED ON.) U$ - "╙YSOP" OR "╙╔╟OP" (─ISPLAYED WHEN [.] COMMAND IS SELECTED.) *UA = ┴CCESS LEVEL IN CURRENT ROOM (├URRENT ACCESS VALUE DERIVED FROM VARIABLES UA$ AND B(BN). 1 = ╬O ACCESS, 2 = ╥EAD-ONLY ACCESS, 3 = ╫RITE ACCESS, 4 = ├REATE ACCESS, 5 = ╙╔╟OP ACCESS.) *UA$ = ╒SER - ┴CCESS *UC = ╒SER - ╬UMBER OF CALLS *UD = ╒SER - ╬UMBER OF DOWNLOADS *UD$ = ╒SER - ─ATE LAST CALLED (─ATE IN ┘┘══── FORMAT. ╒SED IN CONJUNCTION WITH ARRAY N .) *UF = ╒SER - ┼MAIL FORWARDING ACCOUNT NUMBER (╓ALID RANGE BETWEEN 0 AND 999.) *UI = ╒SER - ╬UMBER OF MESSAGES POSTED AT LAST CALL (SYSTEM TOTAL) (├ONTAINS VALUE OF VARIABLE MP AT TIME OF USER'S LAST LOGOFF. ╒SED TO DETERMINE IF ALL MESSAGES ARE NEW.) *UL = ╒SER - ╬UMBER OF BAD LOGOFFS. *UM = ╒SER - ╬UMBER OF MESSAGES POSTED (USER'S TOTAL) *UN$ = ╒SER - ╬AME *UP$ = ╒SER - ╨ASSWORD *US$ = ╒SER - ╙TATUS *UT = ╒SER - ─AILY ╘IME ╠IMIT *UT% = ╒SER - ╘IME ╒SED ╘ODAY (PREVIOUS SESSIONS ONLY) (├ONTAINS THE VALUE OF VARIABLE T2 AT TIME OF USER'S LAST LOGOFF.) *UU = ╒SER - ╬UMBER OF UPLOADS *UX$ = ╒SER - ╨ROTOCOL (═UST CONTAIN THE NAME OF A PROTOCOL, EVEN IF PROTOCOL DOES NOT EXIST.) W% - ╘EMP - NUMBER OF BYTES DISPLAYED IN WINDOW X - ╘EMP - ─ISK ╙PACE ┴VAILABLE *X$ = ─ATE AND ╘IME / ╘EMP / ╥OOM ACCESS FOR CURRENT ROOM (─ATE AND TIME IN FORMAT "┘┘══── AT ╚╚:══?═" EXCEPT DURING THE [╟]OTO COMMAND'S ROOM LIST, IN WHICH CASE IT IS THE USER'S ACCESS TO THE CURRENT ROOM (A SINGLE LETTER)). XM$ - ╠AST ═ESSAGE ┼DITTED (╞ILENAME OF MESSAGE) *YY = ┘EAR (╓ALID RANGE IS 0 TO 99. ┴NY VALUE LESS THAN 81 IS IN THE 21ST CENTURY.) Z$ - ╘EMP ZR$ - ├ONSTANT = "000000" (USED TO CHECK IF ┬┬╙ DISABLED) ╔F THE ┬┬╙ CRASHES WITH AN ERROR, OR DOES A WARM START, YOU MAY DISPLAY THE VALUE OF ANY VARIABLE WITH THE ╨╥╔╬╘ COMMAND. ------------------------------------------------------------------------------ ┴CCESSING ┬┴╙╔├ ╓ARIABLES & ═EMORY ╠OCATIONS ╞ROM ╘HE ╞ILE ╙ERVER ┴S MENTIONED IN THE MAIN ┬┬╙ DOCUMENTATION, THE ├═─╥-┬ CODE ALLOWS THE DISPLAY OF ALMOST ANY ┬┴╙╔├ EXPRESSION. ╘HIS CAN INCLUDE SIMPLE VARIABLE NAMES OR COMPLEX EQUATIONS AND STRING FUNCTIONS. ╘O DISPLAY ANY VARIABLE, MEMORY LOCATION, OR EXPRESSION, ENCLOSE THE VARIABLE NAME, ╨┼┼╦ STATEMENT, OR EXPRESSION WITHIN ├═─╥-┬ CODES WITHIN THE MESSAGE OR TEXT FILE. ╞OR EXAMPLE, TO DISPLAY THE CURRENT USER'S NAME, WHICH IS STORED IN THE VARIABLE ╒╬$, INSERT THE FOLLOWING IN THE FILE WHEREEVER YOU WANT THE NAME TO APPEAR: [├═─╥-┬] U N $ [├═─╥-┬] ┼XAMINE THE FILE "STATISTICS" THAT COMES WITH THE ┬┬╙ FOR MORE COMPLICATED EXAMPLES USING EXPRESSIONS. ╘HE ┬┬╙ PROCESSES THE ├═─╥-┬ CODE BEFORE THE OTHER ├═─╥ CODES. ╘HIS ALLOWS YOU TO USE A ├═─╥-┬ EXPRESSION AS AN "ARGUMENT" TO A ├═─╥-╞ FILE MENU/JUMP CODE. ╞OR EXAMPLE, IF YOU WANT TO HAVE SEPARATE 40 COLUMN AND 80 COLUMN VERSIONS OF THE SAME FILE, YOU CAN USE THE CONTENTS OF MEMORY LOCATION 02┴├ (DECIMAL 684) TO TELL THE ┬┬╙ WHICH FILE TO DISPLAY. ╚ERES AN EXAMPLE OF HOW TO DO THIS WITH A ╙╔╟ BULLETIN FOR THE FIRST ╙╔╟. ┴SSUME THAT THE ╙╔╟ BULLETIN IS ON DRIVE ┴ AND IT IS FORMATTED TO BE DISPLAYED ON A 40 COLUMN SCREEN. ┴NOTHER FILE CALLED A.┬╒╠╠80, LOCATED ON THE SAME DRIVE, IS AN 80 COLUMN VERSION OF THE ╙╔╟ BULLETIN. ┴LL YOU WOULD NEED TO DO IS PUT THE FOLLOWING LINE AT THE BEGINNING OF THE MAIN ╙╔╟ BULLETIN FILE (FILENAME: A.┬╒╠╠┼╘╔╬): [├═─╥-╞][├═─╥-┬]├╚╥$(42-(PEEK(684)<80))[├═─╥-┬]A/A.┬╒╠╠80 ╚ERE'S HOW IT WORKS: ╘HE FIRST THING THE ┬┬╙ DOES IS PROCESS THE EXPRESSION IN BETWEEN THE ├═─╥-┬ CODES. ╘HE EXPRESSION IS: ├╚╥$(42-(PEEK(684)<80)) ╘HIS ┬┴╙╔├ EXPRESSION CONVERTS TO '*' IF THE VIDEO WIDTH IS 80 OR MORE. ╧THERWISE IT CONVERTS TO '+'. ╙O, IF THE VIDEO WIDTH IS 80 OR MORE, THEN THE ORIGINAL LINE WILL RESOLVE TO: [├═─╥-╞]*A/A.┬╒╠╠80 WHICH WILL DISPLAY THE FILE A.┬╒╠╠80 ON DRIVE ┴. (╘HE '*' TELLS THE ┬┬╙ TO BRANCH IMMEDIATELY TO THE FILE.) ╧THERWISE THE ORIGINAL LINE WILL RESOLVE TO: [├═─╥-╞]+A/A.┬╒╠╠80 ╘HIS DOESN'T DO ANYTHING EXCEPT SET UP A FILE JUMP ENTRY THAT WILL ALLOW THE USER TO DISPLAY THE A.┬╒╠╠80 FILE IF HE PRESSES '+'. ╬ORMALLY YOU WOULDN'T WANT TO DISPLAY THIS OPTION IN THE TEXT OF THE FILE SO THE USER WON'T KNOW IT IS THERE. ┬Y CHANGING THE (PEEK(684)<80) TO (PEEK(896)<>1), YOU CAN USE THIS SAME TECHNIQUE TO SWITCH TO A DIFFERENT FILE IF THE USER HAS SELECTED ┴╬╙╔ MODE. ╘HIS ALLOWS YOU TO HAVE SPECIAL ┴╬╙╔ GRAPHICS SCREENS FOR USERS WHO CAN DISPLAY THEM. ╫ITH THE 941002 VERSION OF THE ┬┬╙, YOU CAN NOW MODIFY VARIABLES AND MEMORY LOCATIONS FROM WITHIN ANY TEXTFILE. ╔ WAS HESITANT TO ADD THIS FEATURE BECAUSE IT CAN BE DANGEROUS. ┘OU CAN CORRUPT THE ┬┬╙ MEMORY AND EVEN "BASES" FILE. ╔ ADDED IT ANYWAY BECAUSE ╔ THOUGHT THE ADVANTAGES OUTWEIGHED THE DISADVANTAGES. ╘O DISABLE THE FEATURE, SET THE ┬┴╙ SWITCH TO OFF. ╘O MODIFY A VARIABLE, USE A STANDARD ┬┴╙╔├ "╠┼╘" STATEMENT WITHIN THE ├═─╥-┬ CODES. (╘HE EXPRESSION MUST START WITH "╠┼╘" FOR THIS TO WORK.) ╘O MODIFY A MEMORY LOCATION, USE THE ┬┴╙╔├ "╨╧╦┼" STATEMENT. ╞OR EXAMPLE, TO CHANGE A USER'S DAILY TIME LIMIT TO 120 MINUTES: [├═─╥-┬] L E T U T = 1 2 0 [├═─╥-┬] ┘OU CAN USE THIS NEW FEATURE HOWEVER YOU WANT. ╩UST BE CAREFUL WITH IT! ┴ NEW UNDOCUMENTED FEATURE ALLOWS YOU TO STORE A LIST OF ┬┬╙ COMMANDS IN AN ARRAY FROM WITHIN A TEXT FILE AND THE ┬┬╙ WILL PROCESS THEM THE NEXT TIME IT GOES TO THE ├╧══┴╬─ PROMPT. ┘OU CAN USE THIS FEATURE TO CREATE MORE USER- FRIENDLY DOWNLOAD MENUS, WHERE A USER CAN SELECT A FILE BY PRESSING A KEY AND THE ┬┬╙ WILL AUTOMATICALLY GO INTO DOWNLOAD MODE. ╫HILE THE ┬┬╙ IS PROCESSING THE STORED COMMANDS, IT WILL NOT DISPLAY THE ├╧══┴╬─ PROMPT. ╘O STORE COMMANDS, USE THE [├═─╥-┬] ╠┼╘ [├═─╥-┬] TECHNIQUE TO STORE THE LOWERCASE COMMAND KEYSTROKES INTO THE ╤$() ARRAY WITH ANY ARGUMENTS IN THE ╤┴$() ARRAY. ╘HE COMMANDS SHOULD BE STORED IN REVERSE ORDER... THE LAST COMMAND GOES INTO ╤$(0). ╘HEN STORE THE NUMBER OF COMMANDS INTO THE ├═% VARIABLE. ╧NLY ONE ╠┼╘ OR ╨╧╦┼ STATEMENT IS ALLOWED ENCLOSED IN THE ├═─╥-┬ CODES. ╞OR EXAMPLE, IF YOU WANT TO STORE THE FOLLOWING COMMANDS: [╥]EAD [╪]FER ╞╔╠┼.╘╪╘ [╘]ERMINATE ╘HEN USE THE FOLLOWING ╠┼╘ STATEMENTS IN YOUR FILE (ENCLOSED IN ├═─╥-┬ CODES): ╠┼╘ ╤$(1)="RT" ╠┼╘ ╤┴$(1)="╞╔╠┼.╘╪╘" ╠┼╘ ╤$(0)="T" ╠┼╘ ╤┴$(0)="" ╠┼╘ ├═%=2 ═OST COMMANDS, INCLUDING SYSOP COMMANDS, ARE AVAILABLE USING THIS METHOD, EVEN IF THE USER IS NOT A SYSOP. (╙INCE NON-SYSOP USERS CANNOT ENTER THE ├═─╥-┬ CODE IN A FILE, THE ┬┬╙ IS STILL SECURE.) ╚OWEVER, THE [╟]OTO ROOM-LIST COMMAND AND [╠]OGON NEW-USER COMMAND ALSO USE THE ╤$() ARRAY SO DON'T USE THOSE COMMANDS. ╘HE MAIN LIMITATION OF THIS IS THAT IT ONLY WORKS FOR COMMANDS AVAILABLE AT THE MAIN ├╧══┴╬─ PROMPT. ╔F A COMMAND SENDS THE ┬┬╙ TO ANOTHER PROMPT (I.E. THE EDITOR, ACCOUNT EDITOR, ─╧╙ SHELL, ETC), THEN THE USER HAS TO TAKE IT FROM THERE. ┴NOTHER NEW UNDOCUMENTED FEATURE ALLOWS YOU TO DISPLAY A FILE AFTER THE CURRENT FILE IS FINISHED BEING DISPLAYED. ╔F YOU WANT TO DISPLAY A TEXTFILE IMMEDIATELY AFTER THE CURRENT TEXTFILE IS FINISHED, THEN LOAD THE DRIVE/FILENAME INTO THE ╔$ VARIABLE AND SET ┴╥% TO 1. ╬OTE THAT WHEN THE ┬┬╙ BRANCHES TO A DIFFERENT FILE USING THE ├═─╥-╞ CODE (ALSO DESCRIBED IN THE DOCUMENTATION), THE ┬┬╙ TREATS THE DIFFERENT FILE AS A CONTINUATION OF THE ORIGINAL. ╘HIS ALLOWS YOU TO USE ONE FILE AS A MENU TO SELECT ONE OR MORE TEXTFILES FOR VIEWING AND WHEN THOSE TEXTFILES ARE FINISHED VIEWING, THE ┬┬╙ CAN RETURN BACK TO THE MENU FILE AUTOMATICALLY. ╚ERE'S IS A SAMPLE MENU FILE THAT CAN DISPLAY TWO OTHER FILES: [├═─╥-┬]LEFT$("(PAUSED)[├═─╥-╨]",10*AR%)[├═─╥-┬] [├═─╥-╞]1B/FILE1.TXT [├═─╥-╞]2A/FILE2.TXT [├═─╥-┬]LETI$="A/MENU"[├═─╥-┬][├═─╥-┬]LETAR%=1[├═─╥-┬] [├LEAR-SCREEN]╞ILE ═ENU: (1) ─ISPLAY FILE1.TXT (2) ─ISPLAY FILE2.TXT ╨RESS KEY OR ╥┼╘╒╥╬ TO EXIT.[├═─╥-╨][├LEAR-SCREEN] [├═─╥-┬]LETAR%=0[├═─╥-┬] ╘HE FIRST LINE IS USED TO PAUSE THE ┬┬╙ AFTER ONE OF THE FILE IS DISPLAY AND BEFORE THE MENU FILE IS REDISPLAYED. ╘HIS IS TO GIVE THE USER A CHANCE TO FINISH READING BEFORE THE MENU FILE CLEARS THE SCREEN. ╔F YOU LEAVE THE CLEAR-SCREEN CODE OUT (5TH LINE DOWN), THEN YOU DON'T HAVE TO HAVE THIS LINE. ╘HE NEXT TWO LINES SET UP THE KEYS USED TO DISPLAY THE FILES. ╘HESE LINES ARE DESCRIBED IN THE ┬┬╙ DOCUMENTATION FOR THE ├═─╥-╞ CODE. ╘HE NEXT LINE STORES THE DRIVE/FILENAME OF THE MENU FILE INTO THE ╔$ VARIABLE AND SET THE ┴╥% VARIABLE TO 1. ╘HIS TELLS THE ┬┬╙ TO REDISPLAY THIS MENU FILE AFTER IT IS FINISHED DISPLAYING ONE OF THE OTHER FILES. ╬OTICE THAT YOU CAN INCLUDE MORE THAN ONE ├═─╥-┬ EXPRESSION ON THE SAME LINE. ╬EXT IS THE MENU ITSELF AS DISPLAYED TO THE USER. ╘HE ├═─╥-╨ CODE NEAR THE END OF THE FILE IS WHERE THE MENU PAUSES, WAITING FOR THE USER TO SELECT A FILE TO DISPLAY. ┴FTER THE USER PRESSES A KEY, THE SCREEN WILL BE CLEARED. (┴FTER THE USER PRESSES A KEY, THE ┬┬╙ WILL CONTINUE DISPLAYING THE REST OF THE LINE AFTER THE ├═─╥-╨ CODE, THEN IT WILL PROCESS THE KEYSTROKE.) ╔F THE USER PRESSES (1) OR (2), THE ┬┬╙ WILL IMMEDIATELY BRANCH TO THE APPROPRIATE FILE. ╔T WILL NOT PROCESS THE LAST LINE OF THE MENU FILE. ╔F THE USER PRESSES ANY OTHER KEY, THE ┬┬╙ WILL NOT BRANCH TO ANOTHER FILE BUT IT WILL PROCESS THE LAST LINE OF THE MENU FILE. ╘HIS LAST LINE CLEARS THE ┴╥% VARIABLE SO THAT THE MENU FILE WILL NOT BE REDISPLAYED. ┘OU CAN GET REALLY COMPLICATED WITH THIS TECHNIQUE BY USING AN ARRAY SUCH AS ╤$() TO HOLD A SERIES OF FILENAMES TO RETURN TO. ╧NCE YOU FIGURE OUT HOW TO DO IT, YOU CAN CREATE NESTED MENUS OR EVEN A HYPERTEXT DATABASE. ------------------------------------------------------------------------------ ═ODULE ╨ROGRAMMING ╟UIDE: ═ODULE FILES ARE SMALL MACHINE LANGUAGE PROGRAMS THAT YOUR CAN RUN FROM THE ─╘╩-┬┬╙. ╘HEY MAY BE GIVEN ANY FILENAME IF YOU INTEND TO RUN THEM FROM AN S.3 FILE PHRASE. ┬UT IF YOU WANT TO RUN THEM BY USING THE ┼[╪]EC COMMAND, THEN THEY MUST BE LOCATED ON A ╙╔╟-FILE DRIVE AND THE FILENAME MUST CONSIST OF THE ╙╔╟LETTER, A PERCENT SIGN, AND THE NAME OF THE MODULE IN UPPERCASE LETTERS I.E. "A%╓╧╘┼". ╘HE ┬┬╙ WILL LOAD A MODULE OF ANY SEQUENTIAL FILE TYPE (╨╥╟, ╙┼╤, OR ╒╙╥). ═ODULES CAN BE RUN ONLINE BY USING THE COMMAND ┼[╪]EC: <MODULENAME> AT THE ├╧══┴╬─ PROMPT. ┬Y LEAVING OUT THE MODULENAME, A DESCRIPTION FILE WILL BE DISPLAYED. ╘HE FILENAME OF THIS FILE CONSISTS OF ONLY THE ╙╔╟ LETTER AND A PERCENT SIGN. ╘HIS FILE SHOULD BE LOCATED ON THE ╙╔╟FILE DRIVE AND IT SHOULD CONTAIN A LIST OF AVAILABLE MODULES. ╫HEN WRITING MODULES FOR THE ─╘╩-┬┬╙, YOU SHOULD OBSERVE THE FOLLOWING GUIDELINES: 1. ╘O HELP MAINTAIN COMPATABILITY WITH FUTURE REVISIONS OF THE ─╘╩-┬┬╙, TRY NOT TO READ OR MODIFY ANY MEMORY LOCATIONS MENTIONED IN THE MEMORY MAP EXCEPT FOR THE ONES LABEL "╘EMPORARY WORK SPACE", "╘EMPORARY WORK POINTER", OR THOSE MEMORY LOCATIONS MENTIONED BELOW. ╔F THE MEMORY LOCATIONS OTHER THAN THE TEMPORARY LOCATIONS ARE CHANGED, THEY MUST BE RESTORED TO THEIR ORIGINAL VALUES UPON EXITING THE MODULE. ┘OU MAY ALSO FIND READING VARIABLES MARKED WITH A * USEFUL. 2. ╘HE ┬┬╙ KEEPS THE FOLLOWING FILE CHANNELS OPEN AT ALL TIMES: #2 = ┬┬╙ ╔NPUT/╧UTPUT ├HANNEL #4 = ╨RINTER ╧UTPUT/┼DIT-┬UFFER ╔NPUT ╬OTICE THAT THE PRINTER CHANNEL IS OPEN EVEN WHEN IT IS NOT BEING USED. ─O NOT CLOSE THESE FILES! ┴LL OTHER FILE NUMBERS ARE AVAILABLE FOR YOUR USE. ╚OWEVER, IF YOU OPEN A FILE, CLOSE IT BEFORE EXITING YOUR MODULE. 3. ═ODULES ARE LOADED INTO THE EDIT BUFFER MEMORY. ═ODULES MUST LOAD AND EXECUTE AT $┴001. ═ODULE SIZE MAY BE LARGER THAN THE CONFIGURED SIZE OF THE EDIT BUFFER (IN THE S.1 FILE), BUT IT MAY NOT EXCEED THE MAXIMUM SIZE OF THE EDIT BUFFER (4095 BYTES). ╙INCE MODULES ARE LOCATED UNDER ┬┴╙╔├ ╥╧═, YOU CANNOT ACCESS ANY ┬┴╙╔├ ╥╧═ ROUTINES WITHOUT BRANCHING OUT FROM UNDER THE ┬┴╙╔├ ╥╧═ AND THEN SWITCHING THE ┬┴╙╔├ ╥╧═ IN TEMPORARILY. ┴LL MODULES MUST EXIT WITH AN ╥╘╙ INSTRUCTION. 4. ╒SE THE DOCUMENTED ╦ERNAL ╥╧═ VECTORS AS MUCH AS POSSIBLE. ╘HIS APPLIES ESPECIALLY TO THE ╥╙-232 ╔/╧ ROUTINES. 5. ┴NY DISK ACCESS SHOULD OPEN FILES USING DEVICE NUMBERS COORESPONDING TO THE ┴╙├╔╔ VALUES OF THE DRIVE LETTERS (┴=65, ┬=66, ETC). ╧NCE THE FILE HAS BEEN OPEN, THE ┬┬╙'S KERNAL OVERLAY WILL CONVERT THE LOGICAL DRIVE NUMBER INTO A PHYSICAL DEVICE NUMBER SO THAT LOCATION $┬┴ WILL CONTAIN THE ACTUAL DEVICE NUMBER AS IT USUALLY DOES. 6. ╘HE SOFTWARE ╩IFFY CLOCK VALUES MAY BE CHANGED AND DO NOT HAVE TO BE RESTORED WHEN RETURNING CONTROL TO THE ┬┬╙. 7. ─O NOT TURN INTERRUPTS OFF, OR MODIFY INTERRUPT ROUTINES. ╘HE ┬┬╙ USES THE ╔╥╤ ROUTINE TO DISPLAY THE WINDOW AT THE TOP OF THE SCREEN AND TO CHECK FOR CARRIER. ╘HE ╬═╔ ROUTINE IS USED FOR ╥╙-232 COMMUNICATIONS. 8. ╘O PREVENT LOCKUP PROBLEMS, ALWAYS CHECK FOR CARRIER IN ALL LOOPS THAT DO NOT EXIT IN A SHORT PERIOD OF TIME. ├ARRIER MAY BE CHECKED BY CALLING THE FOLLOWING SUBROUTINE: CARRIER ; GET RS-232 STATUS. LDA $9FE7 ; MASK ALL BITS EXCEPT THE CARRIER BIT. AND #$10 ; MASK RESULT WITH CARRIER-DETECT MASK (FORCE CARRIER IF IN ; CONSOLE MODE). SINCE DOING A FILE TRANSFER WHILE IN CONSOLE ; MODE IS USELESS (RS-232 I/O IS DISABLED), LEAVE THIS INSTRUCTION ; OUT IF YOU ARE WRITING A PROTOCOL MODULE. AND $02A9 ; EXIT SUBROUTINE. RTS ╘HIS SUBROUTINE WILL RETURN ZERO SET (REGISTER ┴=0) IF CARRIER IS PRESENT, OR ZERO CLEARED (REGISTER ┴=16) IF CARRIER IS NOT PRESENT. ╔F CARRIER IS NOT PRESENT, THE MODULE SHOULD CLOSE ALL FILES AND EXIT. ╘HE ┬┬╙ WILL THEN HANDLE THE CARRIER-DROP. ─O NOT CHECK CARRIER AT LOCATION $──01 AS SOME MODEMS/INTERFACES MAY USE REVERSE CARRIER AND ALSO THIS LOCATION IS NOT USED WITH THE ╙WIFTLINK-232 CARTRIDGE. 9. ╘HE ─╘╩-┬┬╙ DOES NOT USE A FULL 256-BYTE ╥╙-232 OUTPUT BUFFER. ╘HIS IS TO HELP PREVENT GARBLING PROBLEMS WITH THE SOFTWARE ╥╙-232 ROUTINES. ╘HE ╙WIFTLINK MODE ALSO DOES NOT USE AN OUTPUT BUFFER. ╘HIS KEEPS THE ╬═╔ ROUTINE AS SHORT AS POSSIBLE AND ALLOWS FOR MORE COMPATABLITY WITH THE SOFTWARE ╥╙-232 ROUTINES. ╘HE FULL 256-BYTE INPUT BUFFER IS USED HOWEVER, WITH BOTH SOFTWARE AND ╙WIFTLINK ╥╙-232 MODES. ╨LEASE DO NOT MANIPULATE THE ╔/╧ BUFFERS DIRECTLY. ╒SE THE ╦ERNAL ╔/╧ ROUTINES. 10. ╘HE ╙WIFTLINK'S RECEIVER SECTION IS DISABLED DURING ALL SERIAL PORT ACCESS TO PREVENT SERIAL PORT TIMING PROBLEMS. ╘HE RECEIVER IS ENABLED VIA THE ╦ERNAL ├╠╥├╚╬ ROUTINE. ┴LWAYS REMEMBER TO CALL ├╠╥├╚╬ AFTER A DISK ACCESS IF YOU WANT TO BE ABLE TO RECEIVE CHARACTERS FROM THE MODEM. 11. ╘HE ╙WIFTLINK ╬═╔ ROUTINE STORES BITS 0 THROUGH 3 OF THE STATUS REGISTER TO LOCATION $0297 SO YOU CAN USE THIS LOCATION AS YOU WOULD NORMALLY. ╠OCATION $02┴1 IS NOT USED IN ╙WIFTLINK MODE. 12. ╒SE ╟┼╘╔╬, NOT ├╚╦╔╬, FOR ALL FILE #2 (MODEM/KEYBOARD) INPUT. 13. ┘OU MAY FIND THE ┬┴╙╔├ VARIABLES LISTED ABOVE WITH A * AFTER THE VARIABLE NAME USEFUL. ╙INCE THE ┬┴╙╔├ ╥╧═ IS SWITCHED OUT, YOU WILL HAVE TO DEVISE YOUR OWN METHOD OF ACCESS THE VARIABLE YOU WANT TO USE. ╓ARIABLE POSITIONS MAY VARY SO YOU SHOULD ALWAYS SEARCH FOR A VARIABLE BY NAME. ─O NOT ASSUME THAT A GIVEN VARIABLE WILL ALWAYS BE IN THE SAME LOCATION IN THE VARIABLE AREA IN FUTURE REVISIONS. ╔N MOST CASES, YOU SHOULD NOT CHANGE THE VALUE OF A VARIABLE. 14. ─O NOT CALL ┬┴╙╔├'S RANDOM NUMBER GENERATOR. ╘HE MEMORY LOCATION USED TO STORE THE SEED VALUE IS BEING USED FOR OTHER PURPOSES. ------------------------------------------------------------------------------ ╨ROTOCOL ═ODULE ╨ROGRAMMING ╟UIDE: ╨ROTOCOL FILES ARE A MORE SPECIALIZED FORM OF MODULE. ╘HE FILENAME OF A PROTOCOL MODULE CONSISTS OF "P-" FOLLOWED BY THE PROTOCOL NAME IN UPPERCASE LETTERS. ╘HESE FILES ARE LOCATED ON DRIVE ┴. ╔N ADDITION TO THE ABOVE GUIDELINES, THE FOLLOWING APPLIES TO PROTOCOL FILES: 15. ╘HE ─╘╩-┬┬╙ OPENS THE FILE TO BE RECEIVED OR SENT BEFORE CALLING THE PROTOCOL MODULE ROUTINE. ╘HE FILE NUMBER IS 8. ╘HE COMMAND CHANNEL IS ALSO OPEN USING FILE NUMBER 1. (╔N THE FUTURE, THIS WILL CHANGE IF/WHEN MULTI-FILE TRANSFERS ARE IMPLIMENTED. ╞ILE 8 WILL BE A ╨╥╟-FORMAT DIRECTORY FILE AND FILE 1 WILL BE CLOSED. ╘HE LOADING ADDRESS MAY CHANGE TO $┴000 OR $┴002 TO FORCE INCOMPATABILITY WITH THE OLD MODULES. ╘HIS IS TO PREVENT PROBLEMS WITH RUNNING MULTI-FILE TRANSFERS ON AN OLDER ┬┬╙ THAT CAN'T HANDLE THEM.) 16. ╘HE PROTOCOL MODULE MUST CONTAIN BOTH SEND AND RECEIVE ROUTINES. ╘HE RECEIVE ROUTINE MUST START AT $┴001 AND THE SEND ROUTINE MUST START AT $┴004. 17. ╒NLESS THE PROTOCOL IS AN ┴╙├╔╔ TRANSFER, BOTH THE SEND AND RECEIVE ROUTINES MUST TURN ┴╙├╔╔ TRANSLATION OFF. ┼CHO SHOULD ALSO BE TURNED OFF. ═AKE SURE YOU TURN TRANSLATION AND ECHO BACK ON WHEN THE TRANSFER IS FINISHED. ╘RANSLATION AND ECHO CONTROL IS AT $02┴7. 18. ┬OTH SEND AND RECEIVE ROUTINES USE THE ┴ REGISTER TO INDICATE THE SUCCESS OF THE TRANSFER UPON EXITING THE MODULE: #$00 = FILE TRANSFER COMPLETE - NO ERROR #$01 = ERROR - TIMEOUT #$02 = ERROR - CANCELLED BY USER #$03 = ERROR - CANCELLED BY SYSOP #$04 = ERROR - OTHER (UNUSED) #$05 = ERROR - DISK FULL #$10 = ERROR - CARRIER DROP ┴NY NON-ZERO STATUS ON A FILE RECEIVE WILL CAUSE THE ┬┬╙ TO SCRATCH THE FILE. ╬OTE THAT THE ROUTINE DESCRIBED EARLIER TO CHECK FOR CARRIER WILL SET ┴ TO #$10 FOR YOU IF CARRIER IS DROPPED. ╥EMEMBER TO LEAVE THE "AND $02A9" INSTRUCTION OUT OF YOUR CARRIER DETECT ROUTINE WHEN WRITING A PROTOCOL MODULE. 19. ═AKE SURE YOU CHECK FOR CARRIER AND IMPLIMENT TIMEOUTS IN ALL LOOPS TO PREVENT TOO MUCH IDLE TIME BEING WASTED. 20. ╒SE THE SOFTWARE JIFFY CLOCK FOR TIMING. 21. ╘RY NOT TO BUFFER TOO MANY BLOCKS IN MEMORY AT A TIME. ┴LOT OF FILE TRANSFER PROTOCOLS WRITTEN FOR THE ├OMMODORE BUFFER UP TO 16 BLOCKS OR MORE IN MEMORY BEFORE WRITING TO DISK OR SENDING TO THE MODEM. ╘HIS SLOWS DOWN THE FILE TRANSFER. ╔NSTEAD, WHEN SENDING DATA, READ ONE OR TWO BLOCKS OF DATA FROM THE DISK AS YOU NEED IT. ╫HEN RECEIVING DATA, WRITE IT TO DISK AS SOON AS IT HAS BEEN VERIFIED CORRECT. 22. ┘OUR PROTOCOL MODULE SHOULD DISPLAY THE STATUS OF THE TRANSFER ON THE SCREEN AS IT GOES. ╘RY NOT TO USE THE WHOLE SCREEN. ┴T A MINIMUM, YOU SHOULD DISPLAY THE NUMBER OF BLOCKS SENT OR RECEIVED. 23. ╨ROVIDE SOME WAY FOR THE SYSOP AND USER TO ABORT THE TRANSFER. ┴ ├╧╬╘╥╧╠-╪ WOULD CONFORM TO THE ORIGINAL ─╘╩ XMODEM'S WAY OF ABORTING THE TRANSFER. ╔F YOU THINK A ├╧╬╘╥╧╠-╪ IS TOO EASY TO ABORT THE TRANSFER BY ACCIDENT, THEN TRY TWO ├╧╬╘╥╧╠-╪'S IN A ROW WITHIN A LIMITTED AMOUNT OF TIME. ╥EMEMBER TO SET REGISTER ┴ TO THE APPROPRIATE VALUE WHEN EXITING. 24. ╘HE MAXIMUM NUMBER OF 254-BYTE DISK BLOCKS THAT CAN BE SAVED TO DISK WHEN RECEIVING A FILE IS STORED AT LOCATIONS $02┬2 AND $02┬3 (IN LOW/HIGH BYTE ORDER). ┼XCEEDING THIS LIMIT BY ABOUT 12 BLOCKS MAY RESULT IN A CORRUPTED DISK. (12 BLOCKS WAS CHOSEN TO PROVIDE A SAFETY ZONE.) ╘HE PROTOCOL SHOULD ABORT WHEN THIS LIMIT HAS BEEN REACHED. ┬EFORE THE TRANSFER BEGINS, YOU CAN MULTIPLY OR DIVIDE THIS MEMORY LOCATION TO GET THE NUMBER OF FILE TRANSFER BLOCKS (I.E. MULTIPLY BY 2 TO GET THE APPROXIMATE NUMBER OF 128- BYTE XMODEM BLOCKS). 25. ╫HEN THE TRANSFER IS COMPLETE, YOU SHOULD CLOSE FILES 8 AND 1. ╔F THE TRANSFER WAS NOT A SUCCESS, YOU DON'T HAVE TO DELETE THE FILE. ╘HE ┬┬╙ WILL DO THAT FOR YOU IF THE PROTOCOL MODULE EXITS WITH THE ┴ REGISTER HOLDING A NON-ZERO VALUE. ------------------------------------------------------------------------------ ═ODULE ╨ROGRAMMING ┼XAMPLES: ; ---------------------------------------------------------------------------- ; ╘URNING ┴╙├╔╔ TRANSLATION AND SCREEN ECHO OFF AND ON. (╒SED WHEN ; WRITING A FILE TRANSFER PROTOCOL.) LDA $02┴7 ; GET CURRENT ┬┬╙ ╔/╧ STATUS PHA ; SAVE IT ON STACK FOR LATER RESTORAL LDA #$00 ; VALUE TO TURN TRANSLATION AND ECHO OFF STA $02┴7 ; STORE BACK INTO ┬┬╙ ╔/╧ STATUS STA $008┼ ; TURN "QUICK-KEYS" OFF. : ; YOUR CODE GOES HERE PLA ; RESTORE OLD ┬┬╙ ╔/╧ STATUS STA $02┴7 ; ; ╘HE ┬┬╙ WILL RESTORE THE VALUE OF $008┼ WHEN IT EXITS THE MODULE; YOU DON'T ; HAVE TO SAVE IT. ; ---------------------------------------------------------------------------- ; ╟ETTING TYPED-IN INPUT FROM A USER. (╒SED WHEN WRITING AN INTERACTIVE ; MODULE SUCH AS A VOTING BOOTH, QUESTIONAIRE, ETC.) BUFFER = $├000 _╟┼╘├╚┴╥ = $├17─ ├╠╥├╚╬ = $╞╞├├ ├╚╦╔╬ = $╞╞├6 ├╚╦╧╒╘ = $╞╞├9 ├╚╥╧╒╘ = $╞╞─2 ╒╔╬╨╒╘ JSR ├╠╥├╚╬ ; CLEAR ╔/╧ CHANNELS IF NEEDED LDX #$02 ; SETUP ┬┬╙ ╔/╧ JSR ├╚╦╔╬ LDX #$02 JSR ├╚╦╧╒╘ LDY #$00 ; RESET BUFFER POINTER ╠╧╧╨ JSR _╟┼╘├╚┴╥ ; GET A CHARACTER FROM THE USER BCS ┼╪╔╘ ; EXIT MODULE IF CARRY IS SET CMP #$0─ ; ╥┼╘╒╥╬ KEY? BEQ ├╥ ; EXIT INPUT ROUTINE IF YES CMP #$14 ; ─┼╠ KEY? BEQ ─┼╠ CMP #$20 ; INVALID CONTROL CHARACTER? BCC ╠╧╧╨ ; IGNORE AND GET ANOTHER CHARACTER IF YES CPY #40 ; 40 CHARACTERS ENTERED ALREADY? (┘OU MAY CHANGE ; THIS VALUE IF DESIRED.) BCS ╠╧╧╨ ; IGNORE AND GET ANOTHER CHARACTER IF YES JSR ├╚╥╧╒╘ ; ECHO CHARACTER TO USER STA BUFFER,Y ; STORE CHARACTER IN INPUT BUFFER INY ; INCREMENT BUFFER POINTER BNE ╠╧╧╨ ; GET ANOTHER CHARACTER ─┼╠ CPY 0 ; IS BUFFER EMPTY? BEQ ╠╧╧╨ ; INGORE AND GET ANOTHER CHARACTER IF YES JSR ├╚╥╧╒╘ ; ECHO ─┼╠ CHARACTER TO USER DEY ; DECREMENT BUFFER POINTER BPL ╠╧╧╨ ; GET ANOTHER CHARACTER ├╥ JSR ├╚╥╧╒╘ ; ECHO CARRIAGE RETURN TO USER LDA #$00 ; STORE A NULL AFTER BUFFER CHARACTERS (OPTIONAL) STA BUFFER,Y ┼╪╔╘ RTS ; EXIT INPUT SUBROUTINE ; ╘HIS SUBROUTINE ASSUMES ┬┬╙ ╔/╧ CONTROL ($02┴7) IS SET FOR TRANSLATION AND ; ECHO ON. "BUFFER" POINTS TO AN AREA OF MEMORY SUFFICIENTLY LARGE ENOUGH ; TO CONTAIN ALL THE CHARACTERS THE USER CAN TYPE IN. ╒PON EXITING THIS ; SUBROUTINE, REGISTER ┴ CONTAINS #$0─, ┘ CONTAINS THE NUMBER OF CHARACTERS ; TYPED IN, AND THE CHARACTERS THEMSELVES ARE STORED AT "BUFFER". ╔F THIS ; SUBROUTINE EXITS WITH CARRY SET, THEN YOU SHOULD EXIT THE MODULE AS SOON ; AS POSSIBLE. ╬OTE THAT CALLS TO _╟┼╘├╚┴╥ WILL RESET THE JIFFY CLOCK. ╔F ; CARRIER IS DROPPED WHILE IN THIS ROUTINE, CARRY WILL BE SET, SO THERE IS ; NO NEED TO ADD CARRIER DETECT TO THIS ROUTINE. ╘HIS ROUTINE WILL ALSO ; HANDLE ALL STANDARD CONSOLE INTERRUPTS SUCH AS SYSOP-PAGE, ├= STATUS ; CHANGE, ETC IF YOU EXIT YOUR MODULE WHEN THIS ROUTINE RETURNS WITH CARRIER ; SET. ; ---------------------------------------------------------------------------- ; ╟ETTING THE VALUE OF A STRING VARIABLE. (╒SED WHEN YOU WANT TO USE OR ; DISPLAY THE VALUE OF A ┬┴╙╔├ STRING VARIABLE SUCH AS THE DATE, USER'S NAME, ; ETC.) ADRS = $0019 ; ╒SED TO STORE ADDRESS OF STRING DATA VAR = $0021 ; ╒SED TO STORE ADDRESS OF VARIABLE DESCRIPTOR LENGTH = $0023 ; ╒SED TO STORE LENGTH OF STRING DATA ╞╔╬─╓┴╥ PLA ; GET ADDRESS OF JSR INSTRUCTION USED TO CALL THIS STA ADRS ; THIS SUBROUTINE (VARIABLE NAME IS STORED PLA ; IMMEDIATELY AFTER THE JSR INSTRUCTION) STA ADRS+1 INC ADRS BNE ╞╓00 INC ADRS+1 ╞╓00 LDA #$02 ; SET UP JMP INSTRUCTION AT END OF THIS SUBROUTINE CLC ; TO JUMP BACK INTO THE CALLING ROUTINE JUST AFTER ADC ADRS ; THE VARIABLE NAME STA ╩╒═╨ LDA #$00 ADC ADRS+1 STA ╩╒═╨+1 LDA $2D ; FIND START OF VARIABLE STORAGE AREA STA VAR LDA $2E STA VAR+1 ╞╓01 LDY #$00 ; (VAR) POINTING TO DESIRED VARIABLE? LDA (VAR),Y CMP (ADRS),Y BNE ╞╓02 INY LDA (VAR),Y EOR #$80 CMP (ADRS),Y BEQ ╞╓03 ; JUMP IF VARIABLE FOUND ╞╓02 LDA #$07 ; OTHERWISE GO TO NEXT VARIABLE CLC ADC VAR STA VAR BCC ╞╓01 INC VAR+1 BNE ╞╓01 ╞╓03 LDY #$02 ; VARIABLE FOUND (VAR POINTS TO VARIABLE NAME LDA (VAR),Y ; IN VARIABLE TABLE STA (LENGTH) ; STORE LENGTH INY LDA (VAR),Y STA ADRS ; STORE ADDRESS INY LDA (VAR),Y STA ADRS+1 JMP ; RETURN TO CALLING ROUTINE ╩╒═╨ $0000 ; ╘HIS SUBROUTINE MUST BE CALLED WITH THE NAME OF THE VARIABLE STORED IN ; THE TWO BYTES FOLLOWING THE JSR STATEMENT. ╘HE VARIABLE NAME MUST START ; WITH A LOWERCASE LETTER, AND END WITH A LOWERCASE LETTER, A DIGIT, OR A ; SPACE. ╘HE VARIABLE MUST ALREADY EXIST, OTHERWISE THE ROUTINE WILL LOCKUP. ; ╒PON EXITING, "VAR" POINTS TO THE VARIABLE NAME IN THE VARIABLE TABLE, ; "LENGTH" CONTAINS THE NUMBER OF CHARACTERS IN THE STRING VARIABLE, AND ; "ADRS" POINTS TO THE FIRST CHARACTER OF THE STRING. ╥EGISTERS ┴ AND ┘ ARE ; MODIFIED. ; ╔F YOU WISH TO READ A NUMERIC VARIABLE, YOU MUST DEVISE YOUR OWN METHOD ; OF USING THE FLOATING POINT INFORMATION IN THE VARIABLE. ╧NCE YOU DEVISE ; A WAY TO ACCESS THE ┬┴╙╔├ ╥╧═, YOU CAN USE THE ╔NTEGER/╞LOATING ╨OINT ; CONVERSION ROUTINES AVAILABLE THROUGH VECTORS $3/$4 AND $5/$6. ; ┘OU CAN ALSO TRY SWITCHING IN ┬┴╙╔├ AT TIMES WHEN YOU NEED TO. ╩UST ; REMEMBER NOT TO SWITCH ┬┴╙╔├ IN WHILE YOU ARE STILL UNDER THE ┬┴╙╔├ ╥╧═. ; ╧NE METHOD TO DO THIS WOULD BE TO COPY A SHORT MACHINE LANGUAGE SUBROUTINE ; TO $├000 THAT SWITCHES IN THE ┬┴╙╔├ ╥╧═, DOES WHATEVER IT NEED TO DO WITH ; WITH THE ┬┴╙╔├ ╥╧═, SWITCHES THE ┬┴╙╔├ ╥╧═ OUT, AND THEN ╥┼╘URNS BACK TO ; THE MAIN MODULE CODE. ╘HIS IS THE WAY THE CALCULATOR MODULE WORKS.