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Text File | 1979-12-31 | 30KB | 732 lines

.PL#62 .PG#4 .LL#80 .LS#2 .ES 27 64 27 14 27 69 .LS#1 M i c r o B e e 16K , 32K , 64K .LS#5 M E M O R Y M A P 1 MAY 1984 .PN#1 .LS#2 I N D E X .ES 27 77 .HE Dec Hex Description .LM#8 Start Address Page DEC HEX 0 0000 1 210 00D2 2 233 00E9 3 273 0111 4 512 0200 5 801 0321 6 2240 08C0 7 2283 08EB 8 32768 8000 (BASIC) 9 32828 803C 10 36916 9034 11 39828 9B94 12 42250 A50A 13 43773 AAFD 14 47821 BACD 15 57089 DF01 (BOOT ROM SCRATCH) 16 57344 E000 (BOOT ROM ) 17 57419 E04B 18 57344 E000 (NET) 19 61440 F000 (SCREEN) 20 .LS#2 000 0000 Hash table - 128 bytes 128 0080 Interrupt vectors - ctcv1 - 4 * 2 bytes 136 0088 PIO interrupt vectors - piov1 - 2 bytes 138 008A Function name "piov2" - 2 bytes 140 008C Break key: 0=enable, 1=disable .LS#1 141 008D Disable LIST=1. Use in context: IF PEEK(140)=0 THEN POKE 141,1 .LS#2 Note: once disabled,POKE cannot be used to reset. 142 008E Reserved 160 00A0 Top of memory pointer - 2 bytes .LS#1 162 00A2 Warm start jump address - 2 bytes Auto-run on RESET - POKE 162,30: 163,128 Auto-list on RESET - POKE 162,190: 163,133 Reset to BASIC - POKE 162,33: 163,128 Reset to NET - POKE 162,6: 163,224 .LS#2 Reset to WORDBEE - POKE 162,6: 163,192 164 00A4 Initial check bytes - 2 bytes - 55AA if initialised 166 00A6 Machine code EXEC address - 2 bytes 168 00A8 PAK/MEM jump vector - 3 bytes 171 00AB NET jump vector - 3 bytes 174 00AE EDASM jump vector - 3 bytes 177 00B1 Reserved - 1 byte .LS#1 178 00B2 Output device vector table - 2 * 8 bytes Normal video O/P: 00B2,00B3 = 2F A6 Parallel printer: 00B4,00B5 = 48 01 RS232 @ 300 baud: 00BA,00BB = 48 01 .LS#2 RS232 @ 1200 baud: 00BC,00BD = 48 01 194 00C2 Input device vector table - 2 * 8 bytes .NP 210 00D2 6545 R0 Total # of Horiz chars (Determines horiz sync freq) 211 00D3 6545 R1 Total # of displayed chars per line 212 00D4 6545 R2 Pos of horiz sync pulse on line 213 00D5 6545 R3 Vert and horiz sync widths (2 nibbles) 214 00D6 6545 R4 Vert total rows per screen -1 215 00D7 6545 R5 Vert total line adjust .LS#1 216 00D8 6545 R6 Total # of vert displayed rows POKE 216,17:USR(32768) = 17 lines POKE 216,16:USR(32768) = 16 lines 217 00D9 6545 R7 Vert sync position 218 00DA 6545 R8 Mode control register POKE 218,75 :USR(32768) = 32 lines POKE 218,72 :USR(32768) = 16 lines 219 00DB 6545 R9 # of scan lines per character 220 00DC 6545 R10 Cursor start/control POKE 220,0 inverse full block POKE 220,1 steady full block POKE 220,12 inverse quarter block POKE 220,15 steady underline POKE 220,64+ flash at 3.3 Hz POKE 220,80 clear cursor POKE 220,96+ flash at 1.6 Hz POKE 220,111 enable normal (default) cursor 221 00DD 6545 R11 Cursor end line 222 00DE 6545 R12 Display start address (high) 223 00DF 6545 R13 Display start address (low) 224 00E0 6545 R14 Cursor position (high) 225 00E1 6545 R15 Cursor position (low) 226 00E2 Output device byte .LS#2 227 00E3 List output device byte 228 00E4 Input device byte 229 00E5 Video mode control byte 230 00E6 Output speed byte 231 00E7 PCG characters used 232 00E8 PLOT type - I,R or S .LS#1 233 00E9 Tape speed: 1=1200, 4=300 baud .LS#2 (Use 0321H to change speed when dumping via DF75) 234 00EA RS232 speed: 1=1200, 0=300 baud .LS#1 235 00EB Is shared scratch - graphics plot/tape routines .LS#2 PLOT tape buffer & required load name to match 241 00F1 Tape header buffer for BASIC - 6 bytes 247 00F7 File type character - 1 byte 248 00F8 Length of file - 2 bytes 250 00FA Normal starting address - 2 bytes 252 00FC Auto exec: jump here if 00FF > 00 - 1 byte 254 00FE File speed: 300 baud = 00, 1200 baud > 00 - 1 byte 255 00FF File exec: auto > 00 - 1 byte 256 0100 File protect byte - 1 byte .LS#1 257 0101 Shift lock: 0 = lower case, 1 = upper case .LS#2 2 = upper case with SHIFT LOCK disabled - 1 byte .LS#1 258 0102 Keyboard auto repeat delay: 52 = on, 255 = off - 1 byte PEEK (258) returns a key (as opposed to ASCII) value which is case insensitive. The values are: @ 0 a - z 1-26 [ \ ] 27-29 ^ 30 Delete 31 0 - 9 32-41 : ; , 42-44 - . / 45-47 Escape 48 Back Sp 49 Tab LF 50-51 Return 52 .LS#2 Lock 53 Break 54 Space 55 259 0103 Keyboard debounce delay & repeat key speed - 2 bytes 261 0105 Defines if retrace or not at last look - 1 byte 262 0106 ASCII value of last key pressed - 1 byte 263 0107 Keeps ASCII value for KEY$ use - 1 byte 264 0108 For port A keyboard - 1 byte .LS#1 265 0109 Zero if parallel port out is usable - 1 byte .LS#2 (parallel device "handshake" byte) 266 010A No. of bytes in cassette redirect buffer - 1 byte 267 010B CURS position address F000+ - 2 bytes 269 010D NZ if last screen char was ESC - 1 byte 279 010E Save TEXT pointer in graphics - 2 bytes 272 0110 Let List-Line do inverse - 1 byte 273 0111 List buffer size: initialised as B8 by NEW 274 0112 Save text pointer in graphics 276 0114 Auto storage - 2 bytes 278 0116 RENUM scratch - 2 bytes 280 0118 Save start of REAL number - 2 bytes 282 011A Random number seed - 16 bytes 298 012A LOAD options :0 = LOAD or SAVE, 1 = LOAD?, 2 = LOADU 299 012B PCG storage - 1 byte 300 012C Function name "vdu addr" - 2 bytes 302 012E Function name "new char" - PCG chars - 16 bytes 318 ? 013E Save text pointer 320 0140 Start of currently executing statement - 2 bytes 322 0142 ON ERROR := Line number if active - 2 bytes 324 0144 ERRORC : Which error message 325 0145 ERRORL : Status of last error - 2 bytes NET SCRATCH AREA 328 0148 NET ROM flag = 0 if not initialised 329 0149 When reading from IN#7, incoming byte is added to this location 336 0150 80 * 24 CRTC table - 16 bytes 352 0160 16 bit RS232 queue handling pointers .LS#1 360 0168 NET format bytes. Can be POKEd for formats other than .LS#2 the 4 provided.. No. of data bits (7 or 8) 361 0169 NET parity: 1 = no parity, 2 = odd, 3 = even 365 016D NET txrx controller address 368 0170 NET address to dump to/load from - 2 bytes 370 0172 NET current file length - 2 bytes 372 0174 Max. size file to load - 2 bytes .LS#1 374 0176 Load status. = 0 if no load took place, = 1 if successful, = 2 if bad load. Valid after NETLOAD, not after function at E019 .LS#2 Up to 01FF inclusive is NET RS232 input buffer .NP EDASM SCRATCH LAYOUT 512 0200 Pointer to currently open primary file - 2 Bytes 522 0228 Secondary file open flag 553 0229 Secondary file start pointer - 2 bytes 555 022B Secondary file end pointer - 2 bytes 557 022D Current line pointer - 2 bytes 559 022F End of memory pointer. Set up on entry to Editor - 2 bytes 561 0231 End of file pointer (points to first FF) - 2 bytes 562 0233 Step size between line numbers - 1 byte 579 0243 General purpose buffer - 128 bytes 708 02C4 Pointer to current character being accessed on buffer - 2 bytes 710 02C6 Size of line currently in buffer 724 02D4 Count of number of errors during assembly - 2 bytes 726 02D6 Suppress listing under NL switch etc. - 2 bytes 728 02D8 Contains >0 if output is to printer, not screen .LS#1 735 02DF Pointer to bottom of Symbol Table, only valid after .LS#2 completion of an assembly 737 02E1 If NZ then suppress line numbers on printout .LS#1 738 02E2 Editor file initialized flag. Will create a null at the default .LS#2 file address if this is not set to 55 on entry to Editor 745 02E9 Current value dafault radix - 1 byte 746 02EA Reserved for line number of printouts - 1 byte 747 02EB Reserved for page number of printouts 752 02F0 Assembler switch storage scratch - 6 bytes 759 02F7 Tape name compare buffer - 16 bytes 775 0307 Tape header buffer for EDASM monitor - 6 bytes 788 0314 Filename - 6 bytes 794 031A Filetype - 1 byte 795 031B Length of file - 2 bytes 797 031D Load address - 2 bytes 799 031F Execute address - 2 bytes 801 0321 Speed byte: 00 = 300, 01 = 1200 baud 802 0322 Autostart on FF - 1 byte 803 0323 Spare byte 805 0325 EDASM return address stack - 128 bytes 932 03A4 START of stack END EDASM SCRATCH AREA 1280 0500 Real variables pointer table - 208 * 2 bytes WORD-BEE SCRATCH LAYOUT 1280 0500 Initialisation flag 1299 0513 Top of memory pointer - 2 bytes 1303 0517 Start of file pointer - 2 bytes 1309 051D End of file pointer - 2 bytes 1335 0537 Filename - 6 bytes 1341 053D Filetype - 1 byte 1342 053E Length of file - 2 bytes 1344 0540 Load address - 2 bytes 1346 0542 Execute address - 2 bytes 1348 0544 Speed byte: 00 = 300, 01 = 1200 baud 1349 0545 Autostart on FF - 1 byte 1350 0546 Spare byte 1351 0547 Header checksum 1392 0570 Location of cursor in monitor mode - 2 bytes 1395 0573 Address of Monitor initial entry e.g E or A comand END OF WORD=BEE SCRATCH AREA 1712 06B0 Interger variables pointer table - 26 * 2 bytes 1764 06E4 FN0 to FN7 Address - 8 * 2 bytes 1832 072A 208 char Input/Program line buffer (till 07E0) 2048 0800 192 char Output buffer BASIC PROGRAM INFO (This is saved to tape) 2240 08C0 Number of sig. digits (must be <62) - 1 byte 2241 08C1 Function name "fw" - 1 byte 2242 08C2 Function name "dp" - 1 byte 2243 08C3 Function name "tmp1" - 2 bytes 2245 08C5 Function name "tmp2" - 2 bytes 2247 08C7 Function name "count" - Line size - 2 bytes 2248 08C8 Undefined function - 1 byte 2249 08C9 Function name "auto" - 1 byte 2250 08CA Function name "crib1" - Current line - 2 bytes 2252 08CC Function name "tmp3" - 2 bytes 2254 08CE Function name "tmp4" - Top of string pointer - 2 bytes 2256 08D0 Program begin pointer - 2 bytes 2258 08D2 Program end pointer at 2nd FF - 2 bytes 2260 08D4 FOR...NEXT stack pointer - 2 bytes 2262 08D6 Output pointer - 2 bytes 2264 08D8 Next available variable location pointer - 2 bytes 2266 08DA Function name "tmpa" - 2 bytes 2268 08DC Next available string variable location pointer - 2 bytes 2270 08DE Function name "xswe" - 1 byte 2271 08DF Function name "xsw1" - 1 byte 2272 08E0 Function name "prmt" - PRMT Char - 1 byte 2273 08E1 Function name "sprmt" - System PRMT Char `>' - 1 byte 2274 08E2 Function name "tmpc" - Line size - 1 byte 2275 08E3 Function name "zone" - Zone width - 1 byte 2276 08E4 Function name "mode" - Variable key - 1 byte 2277 08E5 Function name "tmpd" - 2 bytes 2279 08E7 Function name "tmpb" - 2 bytes 2281 08E9 Function name "dloc" - Data pointer - 2 bytes 2283 08EB Function name "flags" - 1 byte 2284 08EC Function name "lims" - Lower limit of string area - 2 bytes 2286 08EE Function name "autstp" - AUTO Increment - 1 byte 2287 08EF Function name "autln" - AUTO Line Number - 2 bytes 2289 08F1 Function name "tmp8" - 2 bytes 2291 08F3 Function name "tmp9" - 2 bytes 2293 08F5 Function name "ptrps" - 2 bytes 2295 08F7 Default for EDIT - 2 bytes 2297 08F9 Function name "tmpf" - 2 bytes 2299 08FB GOSUB stack pointer - 1 byte 2300 08FC PRINT/LPRINT flag: 1 = screen, 0 = printer, Bit 7 set =TRACE 2301 08FD CONT Line number - 2 bytes 2304 0900 Start of BASIC program or WORD-BEE File (0D) BASIC program info 0900 Line number MSB 2305 0901 Line number LSB 2306 0902 Number of BYTES in line - 1 byte 2307 0903 The rest of the info in the line starts here and ends with 0D 16128 3F00 Stack/top of strings for 16K 16383 3FFF End of RAM in 16K 32512 7F00 Stack/top of strings for 32K 32767 7FFF End of RAM in 32K .NP START OF BASIC ROMS 32768 8000 BASIC return - warm start if 00A4 = 55AA. Start of "A" ROM 32771 8003 BASIC warm start 32774 8006 ASCII value of key pressed in A register. Destroys AF pair 32777 8009 NZ with ASCII in A if key is pressed, else = 0. Destroys AF 32780 800C Display char. in B register. Nothing destroyed 32783 800F A call here has no effect. Included for DGOS compatibility .LS#1 32786 8012 Returns 8 bit value of next cassette byte in A. Read format is Kansas City Standard. Must be used in a continuous fashion for reliable data transfer.Set tape speed in 00E9 before calling .LS#2 here. AF is destroyed .LS#1 32789 8015 Returns block of checksummed data at (HL), end of block+1 .LS#2 in HL, total bytes left in DE. Destroys BC .LS#1 32792 8018 Writes the 8 bit value in A to cassette. Speed is required to have been preset at 00E9. Delay between calls here should be less than 1/1200 second otherwise rubbish may .LS#2 appear. Nothing is destroyed 32795 801B Writes a block at (HL) for length B with checksum at end 32798 801E Auto-execute address for saving BASIC programs 32801 8021 Warm boot to BASIC from Monitor .LS#1 32804 8024 PCG scratchpad initialization with CLS. Same effect as if .LS#2 HIRES command had been given 32807 8027 Sets PCG with LORES chunky graphics .LS#1 32810 802A INVERSE initialization. Fills PCG with black on white characters and then sets 00E5 to indicate this mode. .LS#2 Destroys AF, BC and HL .LS#1 32813 802D Generates UNDERLINEd characters to be put into PCG .LS#2 then sets 00E5 to show this. Destroys AF, BC and HL .LS#1 32816 8030 SET dot: X co-ordinate in HL, Y co-ordinate in DE. Returns Z if successful, otherwise NZ if co-ordinates are out of .LS#2 range or PCG is full .LS#1 32819 8033 RESET dot returns Z if successful, NZ if co-ordinates .LS#2 are out of range or PCG is full 32822 8036 INVERT dot...returns Z etc. as for 8033 .LS#1 32825 8039 Test dot...returns Z etc. as for 8033. Note that no distinction is made between co-ordinates out of range .LS#2 and dot set conditions .LS#1 32828 803C Performs SET, RESET OR INVERT in current graphics mode at best approximation points to the X and Y co-ordinates .LS#2 as specified .LS#1 32831 803F Allows access to all BASIC input devices normally available .LS#2 through IN#n command 32834 8042 OUT#n equivalent of 803F 32837 8045 Redirected printer out A register 32840 8048 Jump to BASIC and clear all variables 32843 804B Jump to BASIC without clearing variables 32846 804E Jump to BASIC after NET or MEM and continue running 32849 8051 Checks buffer for valid line to INSERT 32852 8054 INSERT new line in Program 32855 8057 Line into list buffer 32908 808C Print "?" 32912 8090 Print a space 32914 8092 Display char. in A register on printer or screen 33092 814A Sends <CR>;<LF> to console device 33751 83D7 RUN jump vector .LS#1 33908 8474 BASIC interpreter routine which takes token in A and returns .LS#2 corresponding jump vector in the HL 33934 848E Clear variables 34052 8504 Check key pressed with <RESET> 34071 8517 Monitor to BASIC warm start 34074 851A Return to BASIC without corrupting E2 or E4 34091 852B Clear first 900 hex bytes 34104 8538 Initialise keyboard code 34109 853D Initialise vectors 34151 8567 Find top of memory 34183 8587 NEW jump vector 34215 85A7 Initialise 6545 registers with (HL) - 16 bytes 34230 85B6 LLIST jump vector 34238 85BE LIST jump vector 36916 9034 LET jump vector 36938 904A LPRINT jump vector 36946 9052 PRINT jump vector 38009 9479 IF jump vector 38044 949C GOTO jump vector 38381 95ED FOR jump vector 38590 96BE NEXT jump vector 38814 979E INPUT jump vector 38950 9826 DATA jump vector 39015 9867 READ jump vector 39090 98B2 DIM jump vector 39289 9979 END jump vector 39295 997F STOP jump vector 39340 99AC Print (on printer) text pointed to by HL register .LS#1 39368 99C8 Sundry expressions & print statements jump vector .LS#2 (Note: will result in "syntax error" message) 39371 99CB POKE jump vector 39398 99E6 OUT jump vector 39530 9A6A SD jump vector 39550 9A7E RESTORE jump vector 39582 9A9E PRMT jump vector 39596 9AAC CLEAR jump vector 39627 9ACB IN jump vector 39662 9AEE INT jump vector 39672 ? 9AF8 ZONE jump vector 39674 9AFA PEEK jump vector 39683 9B03 USR jump vector 39720 9B28 LEN jump vector 39753 9B49 ABS jump vector 39773 9B5D RND jump vector 39828 9B94 FLT jump vector 39861 9BB5 FRE jump vector 39901 9BDD SQR jump vector 40034 9C62 GOSUB jump vector 40105 9CA9 RETURN jump vector 40126 9CBE VAR jump vector 40174 9CEE FRACT jump vector 40200 9D08 SGN jump vector 40300 9D6C SEARCH jump vector 40360 9DA8 STRS jump vector 40387 9DC3 VAL jump vector 40562 9E72 SIN jump vector 40659 9ED3 COS jump vector 40678 9EE6 ATAN jump vector 40797 9F5D LOG jump vector 40939 9FEB EXP jump vector 41095 A087 ON jump vector 41265 A131 TRACE jump vector 41322 A16A CONT jump vector 41366 A196 POS jump vector 41382 A1A5 ASC jump vector 41399 A1B7 FN jump vector 41429 A1D5 REM jump vector 41667 A2C3 EDIT jump vector 41870 A38E Print (on screen) text pointed to by HL register 41941 A3D5 Parallel port input vector 41961 A3E9 Keyboard input vector 41971 A3F3 Test for key repeat 14 times 42238 A4FE Test shift key 42244 A504 Test control key 42250 A50A Test if key pressed: Z flag = 1, else = 0 42434 A5C2 Line input of text 42523 A61B CLS jump vector 42541 A62D Call address to print a space 42543 A62F Screen out - A register 42724 A6E4 Shift screen 42772 A714 PLAY jump vector .LS#1 42847 A75F Entry for extended (0-255) tone generator .LS#2 B = pitch (8 bits), HL = duration (16 bits) 42887 A77D SPEED jump vector 42894 A78E Set cursor position 42925 A7AD Turn off cursor 42936 A7B8 NORMAL jump vector 42944 A7C0 PCG jump vector 42952 A7C8 UNDERLINE jump vector 43003 A7FB INVERSE jump vector 43052 A82C RS232 input stream - 300 baud 43057 A831 RS232 input stream - 1200 baud 43130 A87A RS232 output stream - 300 baud 43135 A87F RS232 output stream - 1200 baud 43212 A8CC Get program name 43234 A8E2 Compare program names 43260 A8FC Display `*' during LOAD 43284 A914 SAVE jump vector 43382 A976 LOAD jump vector 43407 A98F Get desired program 43639 AA77 EXEC jump vector 43682 AAA2 Beep 43723 AACB Reads 16 nulls + `1' and header from tape. Destroys A and BC 43768 AAF8 Introduces long non-variable time delay. Destroys A, BC and HL .LS#1 43773 AAFD Introduces a variable time delay. Load HL and B with .LS#2 required values. Destroys A, BC and HL .LS#1 43781 AB05 Writes 64 nulls + `1' and header information to tape. Requires header information set up at 00E9 and 00F1 to 00FF. .LS#2 This destroys all registers 43841 AB41 2400 hertz out 43875 AB63 1200 hertz out 43980 ABCC 300 baud cassette output vector 43987 ABD3 1200 baud cassette output vector 44100 AC44 300 baud cassette input vector 44104 AC48 1200 baud cassette input vector 44215 ACB7 CURS jump vector 44255 ACDF AUTO jump vector 44379 AD5B HIRES jump vector 44385 AD61 SET jump vector 44401 AD71 RESET jump vector 44409 AD79 INVERT jump vector 44417 AD81 POINT jump vector 44550 AE06 USED jump vector 44952 AF98 LORES jump vector 45152 B060 PLOT jump vector 45595 B21B RENUM jump vector 46256 B4B0 DELETE jump vector 46355 B513 GX jump vector 46584 B5F8 Parallel printer LLIST output stream 46609 B611 EDASM jump vector 46617 B61C MEM/NET jump vector 46647 B637 ERROR jump vector 47196 B85C Power-up message: "Applied Technology " etc 47674 BA3A Start of BASIC default values in version 5.10 47738 BA7A Start of BASIC default values in version 5.22e - 63 bytes 47821 BACD Start of initial set of values for 6545 registers;D2 to E1 47844 BAE4 Sound frequency data 48628 BDF4 Reset/Control sequences 48646 BE06 Jump to Monitor (if fitted) 48651 BE11 Self-test on BASIC 5.10 49144 BFF8 Machine serial number - 3 bytes 49152 C000 EDASM/WORDBEE if fitted EDASM ROUTINES 49152 C000 Cold start 49155 C003 Monitor entry 56018 DAD2 Monitor cold start- stack = 03A4 56043 DAEB Monitor warm start .LS#1 56504 DCB8 Displays contents of HL at location pointed to by DE. Place value for display in HL - screen address for display in DE. .LS#2 Destroys A and BC .LS#1 56509 DCBD Displays contents of A at location pointed to by DE. Place value for display in A - screen address for display in DE. .LS#2 Destroys A and BC 56937 DE69 Load a file ( R <CR>) .LS#1 57205 DF75 Write memory to cassette out at existing speed .LS#2 To change speed, alter 0321 WORD-BEE ROUTINES 49152 C000 Cold start 49153 C003 Monitor entry point 49162 C00C CRC Check - Sum of C00E to DFF7 hex 53242 CFFA = DCB8 in EDASM 53247 CFFF = DCBD in EDASM 53345 D061 Monitor cold start - stack = 07E1 53370 D07A Monitor warm start 54220 D3CC Load a file ( R <CR> ) .LS#1 54477 D4CD Write memory to cassette out at existing speed .LS#2 To change speed, alter 0544 57337 DFF9 Location of WORDBEE ID numbers - 2 bytes BOOT ROM SCRATCH DETAILS 57089 DF01 Cursor position in E or A mode 57111 DF17 Filename - 6 bytes 57117 DF1D Filetype - 1 byte 57118 DF1E Length of file - 2 bytes 57120 DF20 Load address - 2 bytes 57122 DF22 Execute address - 2 bytes 57124 DF24 Speed byte: 00 = 300, 01 = 1200 baud 57125 DF25 Autostart on FF - 1 byte 57126 DF26 Spare byte 57157 DF45 3 bytes which allow a linkage to expand the VDU driver 57160 DF48 PIO channel A interrupt vector word 57162 DF4A PIO channel B interrupt vector word 57164 DF4C Which disk is currently selected 57165 DF4D Sector length code for currently selected drive 57166 DF4E 1/2 Number of bytes for sectors on the current drive 57167 DF4F Number of soft errors since system was RESET 57176 DF58 Shift lock: 0 = lower , 1 = upper case 57178 DF5A Tape speed: 1 = 1200 , 4 = 300 baud 57179 DF5B CURSor position address 57184 DF60 Holds a key if looked at by E04E routine 57190 DF66 = 08H if current drive is DOUBLE density, else 0 57191 DF67 2 bit track-to-track time delay mask for 179X, 279X. 57192 DF68 RS232 DATA : 19 BYTES 57211 DF7B Initial check bytes: 55AA if next address should be executed 57213 DF7D Jump address if above is set. 57226 DF8A Incoming RS232 characters are stored from here to DFFF .NP BOOT ROM ROUTINES .LS#1 57344 E000 Cold entry point. Once here, decisions are made as follows RESET Plus : 1. M key = Monitor 2. Break key = G 8000H 3. B key = try to boot disks 4. AA,55 at DF7B = Jump to address at DF7D .LS#2 5. Try to boot disks 57347 E003 Monitor entry point 57350 E006 Wait keyboard = 8006H 57353 E009 NON Wait keyboard = 8009H 57356 E00C Take a char in C and output it to the 80 * 24 video driver 57359 E00F Tape routines = 300 baud 57362 E012 Read a byte from tape into A 57365 E015 Read a block from tape 57368 E018 Write a byte in A out to tape 57371 E01B Write a block to tape 57374 E01E Set up 64 * 16 screen format .LS#1 57377 E021 Select the drive whose code is in A, and find its density, .LS#2 sector length and number of pairs of bytes 57380 E024 Initialise 6545 registers with (HL) 57383 E027 Initialise I/O devices in (HL) 57386 E02A Fill PCG with inverse 57389 E02D Extended memory addressing 57392 E030 RS232 input routine. Returns the next character in A. 57395 E033 Message flash routine 57398 E036 1/4 bit time for RS232 routines 57401 E039 Read consecutive data off disk 57404 E03C Write consecutive data to disk 57407 E03F Reads a sector 57410 E042 Writes a sector 57413 E045 Sets RS232 speed to 300 baud 57416 E048 Sets RS232 speed to 1200 baud 57419 E04B Send char in A to RS232 port 57422 E04E Keyboard look. FF if chararacter avail, 00 if no key pressed 57425 E051 Output charaacter in A to parallel port 57428 E054 Returns FF if RS232 port is `clear' 57431 E057 Returns FF if parallel port is `clear' 60482 EC42 = DF75 or D4CD Cass dump .NP NET ROUTINES 57344 E000 NET/MEM entry point from BASIC 57347 E003 NET int: if B7 of port B goes to 0, then an interupt to here .LS#1 57350 E006 WORDBEE entry point. Also specifies WORDBEE file parameters. Should be used by ALL applications programs which need to have .LS#2 their internal files accessible by the NETWORK ROM 57353 E009 NET checksums 57356 E00C `M' indicates there is a monitor at E00D 57357 E00D Machine language monitor entry point 57360 E010 Network initialization 57363 E013 RS232 communications subroutine .LS#1 57366 E016 Send the block of memory at HL for bc bytes. Return Z if .LS#2 no errors, NZ if error due to timeout or receiver abort .LS#1 57369 E019 Receive a block of memory to HL for a maximum of BC bytes. Return Z if no errors and BC = length of file, NZ if timeout .LS#2 or sync error or too many checksum errors and BC=0. .LS#1 57372 E01C Send block of data at HL for 128 bytes with sector D and .LS#2 total byte count BC. .LS#1 57375 E01F Receive 128 bytes to HL, previous sector number =D. Return Z and D=new sector number if OK (C if EOT), NZ if any .LS#2 error (C if fatal - sync etc.) 57378 E022 Send char in A to RS232 port .LS#1 57381 E025 Return: Z and byte from RS232 queue in A, or NZ if no bytes .LS#2 available from queue. .LS#1 57384 E028 Given: E = # of seconds to try for, return: Z and byte from .LS#2 RS232 queue in A, or NZ if timeout before byte received. .LS#1 57387 E02B Process the string of <CR> terminated NET commands at (DE) and return Z if OK, or NZ if error. DE points to approximate .LS#2 error position. .LS#1 57390 E02E Set CRTC format to 80 * 24, clear screen, set up inverse in .LS#2 PCG, set device to flip back to 64 * 16 when next accessed. .LS#1 57393 E031 Set CRTC format to 64 * 16, clear screen, set up inverse in .LS#2 PCG, set device 6 to flip to 80 * 24 when next accessed. .NP SCREEN RAM 61440 F000 Start of screen memory. 62463 F3FF End of screen memory (64 * 16) 62464 F400 Spare 1K RAM (64 * 16) 63359 F77F End of screen memory (80 * 24) 63360 F780 Spare 128 bytes RAM (80 * 24) 63488 F800 Start of PCG RAM 65535 FFFF Top of memory .NP .XN T