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- ─EVICE ─RIVERS 2-1
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- ╔NPUT ─RIVERS
-
- ╔NPUT DRIVERS EXIST IN MEMORY FROM $╞┼80 TO $╞╞╞9. ╘HEY DO
- NOT HAVE A START ADDRESS SINCE THEY ARE NOT EXECUTABLE PROGRAMS.
- ╘HE DEFAULT INPUT DRIVER (╩╧┘╙╘╔├╦) IS BUILT INTO THE ╟┼╧╙
- ╦┼╥╬┴╠; ╟┼╧╙ WILL ALWAYS BOOT UP WITH THE JOYSTICK AS THE INPUT
- DEVICE. ╘HE USER MUST SELECT ANOTHER ONE IF IT IS SO DESIRED.
- ╘HEY HAVE THREE ENTRY POINTS IN THE VERY BEGINNING. ╘HESE ENTRY
- POINTS ARE A JUMP TABLE FROM $╞┼80-$╞┼88.
- ╘HE FIRST ENTRY POINT AT $╞┼80 IS THE MASTER RESET VECTOR.
- ╘HIS ROUTINE MUST SET THE MOUSE SPEED (╠OCATION $8507) TO ZERO,
- AS WELL AS RESET THE MOUSE'S POSITION TO 0,0 (╠OCATIONS $3┴-$3├).
- ╔T MUST ALSO CLEAR THE DIRECTION BYTE (╠OCATION $8506).
- ╘HE SECOND VECTOR MUST RESET THE SPEED TO ZERO (╠OCATION
- $8507).
- ╘HE THIRD VECTOR ACTUALLY PERFORMS THE INPUT. ╔T MUST ALSO
- MODIFY THE APPROPRIATE FLAGS, ADJUST THE MOUSE'S SPEED AND
- POSITION.
- ╘HE FOLLOWING IS A SMALL MEMORY MAP OF LOCATIONS OF INTEREST
- TO INPUT DRIVERS:
- $30 ═OUSE CONTROL FLAG
- ┬IT 7 - ═OUSE IS VISIBLE, DO NOT MODIFY THE MOUSE'S
- POSITION IF IT IS NOT VISIBLE.
- $39 ╔NPUT STATUS FLAG
- ┬IT 7 - ╘HERE IS DATA IN THE KEYBOARD QUEUE, THIS IS
- NOT USED BY THE INPUT DRIVER.
- ┬IT 6 - ═OUSE HAS CHANGED DIRECTION.
- ┬IT 5 - ┬UTTON STATUS HAS CHANGED, EITHER THE BUTTON
- HAS BEEN RELEASED OR PUSHED SINCE LAST CHECKED.
- $3┴-$3┬ ═OUSE'S ╪ POSITION (0-319), RANGE CHECKING IS NOT
- NECESSARY.
- $3├ ═OUSE'S ┘ POSITION (0-199), RANGE CHECKING IS NOT
- NECESSARY.
- $8501 ═OUSE'S MAXIMUM SPEED.
- $8502 ═OUSE'S MINIMUM SPEED.
- $8503 ┴CCELERATION FACTOR; ADDED OR SUBTRACTED EACH TIME THE
- INPUT DRIVE IS SCANNED AND THE DIRECTION HAS NOT
- CHANGED.
- $8505 ┬UTTON STATUS: $00-PRESSED, $80-NOT PRESSED.
- $8506 ─IRECTION; $╞╞ IF NO DIRECTION IS SPECIFIED; OTHERWISE
- A NUMBER FROM 0 TO 7:
- 3 2 1
- * + *
- 4 -- * -- 0
- * + *
- 5 6 7
- ╘HIS LOCATION IS NEEDED BY THE SCROLL FEATURE FOR
- ╟┼╧PAINT. ╔F NOT USED, FOR EXAMPLE BY A ╦OALAPAD, THIS
- FEATURE OF ╟┼╧PAINT WILL NOT WORK, BUT NOTHING ELSE
- WILL BE AFFECTED.
- $8507 ═OUSE'S CURRENT SPEED.
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- ─EVICE ─RIVERS 2-2
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- ╨RINTER ─RIVERS
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- ╨RINTER DRIVERS EXIST IN MEMORY FROM $7900-$7╞╞╞. ╘HIS
- OVERLAPS PART OF SCREEN 2. ╨RINTER DRIVERS ARE ONLY MEMORY
- RESIDENT WHEN THEY ARE IN USE. ╟┼╧╙ LOADS THE FIRST PRINTER
- DRIVER THAT IT CAN FIND ON THE DISK, WHENEVER IT NEEDS TO PRINT
- SOMETHING. ╘O MAKE A PARTICULAR PRINTER DRIVER ALWAYS BE THE ONE
- FOUND, ALL THAT MUST BE DONE IS TO PLACE IT AHEAD OF ALL THE
- OTHER PRINTER DRIVERS IN THE DIRECTORY. ╘HERE ARE FIVE ENTRY
- POINTS TO A PRINTER DRIVER. ╘HESE FORM A JUMP TABLE FROM $7900-
- $790┼.
- ╘HE FIRST ENTRY POINT, AT $7900, IS THE MASTER RESET. ╘HIS
- ROUTINE MUST INITIALIZE ANY GLOBAL VARIABLES THAT NEED TO BE SET.
- ╘HIS ROUTINE IS CALLED ONCE WHEN THE DRIVER IS LOADED. ╧NLY THE
- ═╨╙-1000 DRIVER USES THIS ROUTINE. ┴LL THE OTHERS SIMPLY RETURN
- WITHOUT DOING ANYTHING.
- ╘HE SECOND ENTRY POINT, AT $7903, IS THE PRINTER
- INITIALIZATION. ╘HIS ROUTINE IS CALLED JUST PRIOR TO PRINTING AN
- IMAGE. ╘HE ╪ REGISTER MUST BE SET TO AN ERROR CODE IF THE PRINTER
- IS NOT AVAILABLE. ╘HIS ERROR CODE IS THE ├64'S ╦┼╥╬┴╠ STATUS BYTE
- AT LOCATION $90. ╘HIS ROUTINE MUST INITIALIZE ANY TEMPORARY
- VARIABLES USED BY THE DRIVER.
- ╘HE THIRD ENTRY POINT, AT $7906, ACTUALLY PERFORMS THE
- PRINTING OF A LINE. ╠OCATIONS $02-$03 POINT TO THE BIT IMAGE
- GRAPHIC DATA FOR THE LINE (640 PIXELS, 8 BITS HIGH, 640 BYTES).
- ╠OCATIONS $04-$05 POINT TO A BUFFER AREA FREE FOR USE BY THE
- DRIVER IF IT NEEDS IT. ╘HIS IS MAINLY TO GIVE PRINTERS WHICH ONLY
- PRINT 7 PIXELS AT A TIME A PLACE TO ACCUMULATE THE EXTRA BITS.
- ╠OCATIONS $06-$07 POINT TO THE COLOR DATA FOR THE LINE. ╘HIS IS
- ONLY FOR THE BENEFIT OF COLOR PRINTERS. ╘HE PRINTER DRIVER MUST
- NOT MODIFIFY ANY OF THESE POINTERS.
- ╘HE FOURTH ENTRY POINT, AT $7909, CLOSES THE PRINTER. ╘HIS
- ROUTINE IS CALLED WHEN THE IMAGE IS FINISHED. ╘HIS ALLOWS 7 BIT
- PRINTERS TO PRINT THE CONTENTS OF THEIR BUFFERS. ╘HIS IS ALSO TO
- GIVE THE PRINTER DRIVER A CHANCE TO PRINT A TOP OF FORM
- CHARACTER.
- ╘HE FIFTH ENTRY POINT, AT $790├, RETURNS THE NUMBER OF
- CHARACTER COLUMNS THAT THE PRINTER CAN PRINT IN THE ╪ REGISTER.
- ╘HE MAXIMUM NUMBER OF LINES PER PAGE IS RETURNED IN THE ┘
- REGISTER. ╘HE ACCUMULATOR IS LOADED WITH A ZERO. ╘HIS GIVES
- APPLICATIONS THE ABILITY TO COMPUTE NECESSARY BUFFER SIZES.
- ╘YPICAL VALUES ARE 80 COLUMNS BY 90 LINES OR 60 COLUMNS BY 90
- LINES.
- ╞INALLY, THE PRINTER DRIVER MUST ALSO INCLUDE ITS NAME AS A
- STRING AT LOCATION $790╞. ╘HIS NAME MUST BE THE SAME AS THE FILE
- NAME. ╟┼╧WRITE AND ╟┼╧PAINT WILL NOT SEE THE DRIVER IF THE FILE
- NAME AND THIS TEXT STRING ARE NOT THE SAME. ─┼╙╦╘╧╨ DOES NOT
- CARE.
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- ╞ILE ╞ORMATS 3-1
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- ╓╠╔╥ ╞ILE ╙TRUCTURE
-
- ┴ ╓╠╔╥ FILE IS A TREE STRUCTURED FILE. ╘HE DIRECTORY POINTS
- TO A SINGLE SECTOR CALLED THE ╓╠╔╥ SECTOR. ╘HIS SECTOR IS A LIST
- OF THE INITIAL TRACKS AND SECTORS OF EACH OF ITS BRANCHES (OR
- CHAINS). ╔F THE BRANCH ADDRESS IS TRACK $00 SECTOR $╞╞, THEN THAT
- BRANCH DOES NOT EXIST AND IS NOT USED. ╔T IS A PLACE HOLDER. ┴
- BRANCH ADDRESS OF TRACK $00 SECTOR $00 SPECIFIES THE END OF THE
- SECTOR. ╘HIS IS USED BY THE ╓╧╨┼╬ TO COUNT THE NUMBER OF
- BRANCHES. ╔T IS POSSIBLE NOT TO HAVE THIS END MARKER. ╘HAT IS THE
- CASE WHEN THERE ARE 127 BRANCHES. ╘HIS LIMIT OF 127 BRANCHES
- EXPLAINS MANY OF ╟┼╧╙'S LIMITS, IE. 127 NOTE PAD PAGES, 127
- PICTURES IN A PHOTO ALBUM, 64 PAGES AND 63 PICTURES IN A ╟┼╧WRITE
- FILE, ETC. ┼ACH BRANCH IS THE EQUIVALENT OF A NORMAL FILE, IE.
- EACH SECTOR POINTS TO THE NEXT WITH THE FIRST TWO BYTES.
-
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- ╞ONT ╞ILE ╞ORMAT
-
- ╞ONT FILES ARE ╓╠╔╥ FILES; THE CHAIN NUMBER (0-126) IS THE
- POINT SIZE. ╟┼╧╙ LIMITS A FONT TO A POINT SIZE OF 48. ╘HIS IS
- PROBABLY DUE TO MEMORY LIMITATIONS FOR STORING THE FONT.
- ╬ONEXISTANT POINT SIZES HAVE ╓╠╔╥ CHAIN ADDRESSES OF $00,$╞╞.
- ╞ONT FILES ARE IDENTIFIED BY A UNIQUE ╔─ NUMBER WHICH IS
- STORED IN THE FILE'S INFO SECTOR AT OFFSET 130. ╘HE INFO SECTOR
- CONTAINS A WORD IDENTIFIER FOR EACH POINT SIZE IN THE FONT. ╘HESE
- IDENTIFIERS HAVE THE FORM: ╔─# * 8 + POINT SIZE. ╘HESE ╔─ WORDS
- ARE USED BY ╟┼╧WRITE AND ╟┼╧PAINT.
-
- ╞ONT FILE CHAIN FORMAT:
-
- $00 ╬UMBER OF PIXELS MINUS 1 ABOVE THE UNDERLINE. ╘HIS IS
- THE LINE OF PRINT.
- $01-$02 ╬UMBER OF BYTES IN THE BIT STREAM.
- $03 ╨OINT SIZE, CHARACTER HEIGHT IN PIXELS.
- $04-$05 ╔NDEX FROM BEGINNING OF FONT TO TABLE OF BIT STREAM
- INDICES. ╒SUALLY $0008.
- $06-$07 ╔NDEX FROM BEGINNING OF FONT TO FIRST BIT STREAM.
- $08-??? ╘ABLE OF WORDS WHICH ARE INDICES INTO THE BIT STREAMS;
- ONE FOR EACH CHARACTER FROM SPACE (32) TO THE TILDA
- (126). ╘HERE IS ALSO AN EXTRA INDEX ON THE END. ╘HIS
- EXTRA INDEX IS NEEDED BECAUSE THE DIFFERENCE BETWEEN A
- CHARACTER'S INDEX AND THE NEXT CHARACTER'S INDEX IS THE
- WIDTH OF THE CHARACTER IN PIXELS.
- ???-??? ╨OINTED TO BY $06-$07. ╘HE FONT IS STORED AS SEVERAL
- BIT STREAMS, ONE FOR EACH LINE OF PIXELS. ╘HE POINT
- SIZE IS THE NUMBER OF BIT STREAMS. ┴LL THE CHARACTER
- IMAGES ARE STORED IN THE BIT STREAM. ╘HE ╟┼╧╙ ╦┼╥╬┴╠
- HAS SOME VERY SOPHISTICATED BIT MANIPULATION ROUTINES
- FOR ACCESSING ANY GIVEN CHARACTER.
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- ╞ILE ╞ORMATS 3-2
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- ╬OTES ╞ILE ╞ORMAT
-
- ╘HE ╬OTES FILE CREATED BY THE ╬OTEPAD DESK ACCESSORY HAS A
- ╓╠╔╥ FILE STRUCTURE. ┼ACH BRANCH IS A SINGLE SECTOR WHICH
- COMPRISES A PAGE OF THE NOTEPAD. ╘HIS SETS THE NOTEPAD'S LIMITS
- TO 127 PAGES OF 253 CHARACTERS. 127 PAGES BECAUSE OF THE LIMIT TO
- THE NUMBER OF ╓╠╔╥ CHAINS, AND 253 CHARACTERS BECAUSE A SECTOR
- HOLDS 254 DATA BYTES (2 BYTES FOR THE NEXT TRACK AND SECTOR LINK)
- AND THE LAST CHARACTER MUST BE A ZERO TO TERMINATE TO TEXT.
-
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- ╨HOTO ╙CRAP ╞ILE
-
- ╘HE ╨HOTO ╙CRAP FILE IS A CODED GRAPHICS IMAGE IN A
- SEQUENTIALLY STRUCTURED FILE. ╘HE FIRST BYTE IS THE NUMBER OF
- BYTES WIDE THE IMAGE IS (ONE EIGTH OF THE WIDTH IN PIXELS).
- ╘HIS MEANS THAT PHOTO SCRAPS ARE ALWAYS EVEN MULTIPLES OF EIGHT
- PIXELS WIDE. ╘HE SECOND AND THIRD BYTE FORM A WORD WHICH IS THE
- NUMBER OF PIXELS HIGH THE IMAGE IS. ╞OLLOWING THESE THREE BYTES
- IS THE GRAPHICS IMAGE, CODED IN THE SAME FORMAT AS A CLICK BOX
- (SUITABLE FOR ─╥┴╫ OR ─╥┴╫2). ╘HIS FORMAT CONSISTS OF A CODE BYTE
- FOLLOWED BY 1 OR MORE DATA BYTES. ╘HE CODE BYTES ARE CLASSIFIED
- INTO THE FOLLOWING THREE BASIC TYPES.
- 1) ├ODE BYTES LESS THAN 128 MEAN THAT THE FOLLOWING BYTE IS
- TO BE REPEATED THAT MANY TIMES.
- 2) ├ODE BYTES RANGING FROM 128 TO 219 MEAN THAT IF 128 IS
- SUBTRACTED FROM THE CODE BYTE THEN THE RESULT IS THE
- NUMBER OF DATA BYTES THAT FOLLOW.
- 3) ├ODE BYTES RANGING FROM 220 TO 255 ARE SPECIAL. ╞IRST 219
- IS SUBTRACTED FROM THE CODE BYTE, THE RESULT IS THE
- NUMBER OF BYTES IN THE PATTERN THAT WILL FOLLOW.
- ╞OLLOWING THIS CODE BYTE IS A REPETITION COUNT FOR THE
- PATTERN. ╞OLLOWING THIS ARE THE BYTES THAT CONSTITUTE THE
- PATTERN. ╘HESE COULD INCLUDE EITHER OF THE FIRST TWO CODE
- TYPES.
- ╙INCE GRAPHIC IMAGES CAN BE IN COLOR, THE COLOR DATA FOLLOWS THE
- GRAPHIC IMAGE DATA. ╘HE COLOR DATA IS CODED IN THE SAME WAY AS
- THE GRAPHIC DATA; HOWEVER, EACH BYTE OF COLOR DATA IS THE COLOR
- FOR A BLOCK OF 8 BY 8 PIXELS (A NORMAL CHARACTER SPACE). ╘HIS IS
- THE REASON THAT ╟┼╧PAINT MAKES PHOTO SCRAPS A MULTIPLE OF 8
- PIXELS HIGH AND WIDE.
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- ╘EXT ╙CRAP ╞ILE
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- ╘EXT SCRAPS ARE SEQUENTIALLY STRUCTURED FILES. ╘HE FIRST TWO
- BYTES OF WHICH, FORM A WORD WHICH CONTAINS THE NUMBER OF BYTES IN
- THE SCRAP. ╞OLLOWING THIS ARE TEXT SEGMENTS IN THE SAME FORMAT AS
- ╟┼╧WRITE FILES, IE. 4 CODE BYTES FOLLOWED BY A ZERO BYTE
- TERMINATED STRING OF TEXT. ╙EE THE ╟┼╧WRITE ╞ILE FORMAT FOR MORE
- INFORMATION.
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- ╞ILE ╞ORMATS 3-3
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- ╨HOTO AND ╘EXT ┴LBUM ╞ILES
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- ┴LBUM FILES ARE ╓╠╔╥ STRUCTURED FILES, WITH EACH CHAIN
- CONTAINING AN INDIVIDUAL PHOTO SCRAP OR TEXT SCRAP.
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- ╟┼╧WRITE ╞ILE ╞ORMAT
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- ╟┼╧WRITE FILES ARE ╓╠╔╥ STRUCTURED FILES. ╘HE FIRST 64
- BRANCHES ARE THE 64 PAGES ALLOWED IN THE FILE. ╘HE LAST 63
- BRANCHES ARE PHOTO SCRAPS, IF THERE ARE ANY PRESENT IN THE
- DOCUMENT. ╙EE THE SECTION ON ╨HOTO ╙CRAP ╞ILES AND ╨HOTO ┴LBUMS
- FOR MORE INFORMATION CONCERNING THE PHOTOS.
- ╘HE FIRST TWO BYTES OF EACH PAGE FORM A WORD WHICH IS THE
- LEFT MARGIN'S POSITION IN PIXELS. ╘HE NEXT TWO BYTES ARE THE
- RIGHT MARGIN'S POSITION. ╘HE FIFTH THROUGH THE SIXTEENTH BYTES
- FORM 6 WORDS WHICH ARE THE TAB STOP POSITIONS, ALSO IN PIXELS.
- ╘HE TEXT WHICH FOLLOWS IS STORED IN SEGMENTS. ┼ACH SEGMENT STARTS
- WITH 4 CODE BYTES. ╘HE FIRST BYTE IS A $17, IF THIS IS A TEXT
- SEGMENT (MORE LATER). ╘HE NEXT TWO BYTES ARE THE FONT ╔─ (CODED
- FORM WHICH INCLUDES POINT SIZE; SEE ╔NFO ╙ECTOR LOCATIONS $80-
- $9╞). ╘HE FOURTH BYTE IS THE STYLE FOR THE SEGMENT; EACH BIT
- DESIGNATING AN ATTRIBUTE:
- BIT 7 ╒NDERLINE
- BIT 6 ┬OLD
- BIT 5 ╥EVERSED, ╬OT USED IN ╟┼╧WRITE FILES
- BIT 4 ╔TALICS
- BIT 3 ╧UTLINE
- ╞OLLOWING THE FOUR CODE BYTES IS THE TEXT STRING WHICH HAS A ZERO
- BYTE TERMINATOR. ╔F THE INITIAL CODE BYTE IS A $10, THEN THIS
- SEGMENT IS NOT A TEXT SEGMENT, IT IS A PHOTO SEGMENT. ╨HOTO
- SEGMENTS HAVE FIVE CODE BYTES AND NO DATA SECTION. ╘HE SECOND
- BYTE IS THE WIDTH OF THE IMAGE IN BYTES. ╘HE THIRD AND FOURTH
- BYTES DESIGNATE THE IMAGE'S HEIGHT IN PIXELS. ╨HOTO SEGMENTS HAVE
- AN EXTRA CODE BYTE WHICH IS THE ╓╠╔╥ CHAIN NUMBER FOR THE IMAGE.
- ╘HIS COULD ALLOW A DOCUMENT TO HAVE 63 DIFFERENT IMAGES BUT USE
- THE SAME IMAGE SEVERAL TIMES WITHOUT STORING IT SEVERAL TIMES.
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- ╞ILE ╞ORMATS 3-4
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- ╟┼╧PAINT ╞ILE ╞ORMAT
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- ╟┼╧PAINT FILES ARE ╓╠╔╥ STRUCTURED FILES. ┼ACH BRANCH
- REPRESENTS 2 LINES OF THE PICTURE. ╘HE DATA IN THE BRANCHES IS
- STORED IN A CODED FORM THAT IS DIFFERENT FROM PHOTO SCRAPS AND
- CLICK BOXES. ╞IRST OF ALL, CONSECUTIVE BYTES DO NOT FORM A
- HORIZONTAL LINE. ╘HE BYTES ARE IN THE SAME SEQUENCE AS THE
- ├OMMODORE STORES THEM ON THE HIRES SCREEN. ┼IGHT CONSECUTIVE
- BYTES FILL A CHARACTER POSITION. ┼VERY EIGHTH BYTE IS ON THE SAME
- HORIZONTAL LINE. ╘HE DATA IS STORED IN A CODED FORM TO CONSERVE
- DISK STORAGE. ╘HE CODING IS SIMPLY A CODE BYTE FOLLOWED BY SOME
- DATA. ├ODE BYTES FALL INTO ONE OF THE FOLLOWING THREE CATAGORIES:
- 1) ├ODE BYTES LESS THAN 64 DETERMINE THE NUMBER OF
- INDIVIDUAL BYTES THAT FOLLOW.
- 2) ├ODE BYTES RANGING FROM 64 TO 127 ARE USED FOR FILL
- PATTERNS. ╘HE LEAST SIGNIFICANT 6 BITS DETERMINE HOW MANY
- CHARACTER POSITIONS ARE TO BE FILLED. ╘HIS CODE BYTE IS
- FOLLOWED BY EIGHT BYTES WHICH DETERMINE THE FILL PATTERN.
- 3) ├ODE BYTES GREATER THAN 127 ARE 128 MORE THAN THE NUMBER
- OF TIMES TO REPEAT THE BYTE THAT FOLLOWS THE CODE BYTE.
- ╘HIS CODING SCHEME IS USED TO FIRST SPECIFY THE 1280 BYTES THAT
- FORM THE TWO LINES OF THE PICTURE. ╘HIS IS FOLLOWED BY THE 160
- BYTES WHICH FORM THE COLOR DATA FOR THE TWO LINES.
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- ─IRECTORY ╙TRUCTURE 4-1
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- ╟┼╧╙ ─IRECTORY ┼NTRY ╞ORMAT
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- ┬YTE# ─ESCRIPTION
- $00 ─╧╙ FILE TYPE
- ┬IT 7 ╞ILE CLOSED PROPERLY.
- ┬IT 6 ╞ILE IS WRITE PROTECTED.
- ┬ITS 0-2 ╞ILE TYPE
- 0 ─┼╠
- 1 ╙┼╤
- 2 ╨╥╟
- 3 ╒╙╥
- 4 ╥┼╠ (╬OT PERMITTED UNDER ╟┼╧╙)
- $01 ╘RACK NUMBER OF FIRST SECTOR.
- $02 ╙ECTOR NUMBER OF FIRST SECTOR.
- $03-$12 ╞ILE NAME.
- $13 ╘RACK NUMBER FOR INFO SECTOR.
- $14 ╙ECTOR NUMBER FOR INFO SECTOR.
- $15 ╞ILE STRUCTURE.
- 0 ╙EQUENTIAL STRUCTURE.
- 1 ╓╠╔╥ FORMAT
- $16 ╟┼╧╙ FILE TYPE.
- 0 ╬ON-╟┼╧╙ FILE.
- 1 ┬┴╙╔├ ╨ROGRAM.
- 2 ┴SSEMBLY PROGRAM.
- 3 ─ATA FILE.
- 4 ╙YSTEM FILE.
- 5 ─ESK ┴CCESSORY.
- 6 ┴PPLICATION.
- 7 ┴PPLICATION ─ATA.
- 8 ╞ONT FILE.
- 9 ╨RINTER DRIVER.
- 10 ╔NPUT DRIVER.
- ╘HE NEXT FEW BYTES DEFINE THE TIME AND DATE OF THE FILE'S
- CREATION.
- $17 ┘EAR.
- $18 ═ONTH.
- $19 ─AY.
- $1┴ ╚OUR.
- $1┬ ═INUTE.
- $1├-$1─ ╞ILE SIZE IN BLOCKS (INCLUDING INFO SECTOR).
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- ─IRECTORY ╙TRUCTURE 4-2
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- ─IRECTORY ╚EADER (╘RACK 18 SECTOR 0)
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- $00 ╘RACK OF FIRST DIRECTORY SECTOR.
- $01 ╙ECTOR OF FIRST DIRECTORY SECTOR.
- $02 $41, ┴╙├╔╔ '┴' INDICATING 4040 FORMAT.
- $03 $2┴, ─╧╙ VERSION.
- $04-$8╞ ┬LOCK ┴VAILABILITY ═AP, ┬┴═, 35 TRACKS, 4 BYTES EACH.
- ╞IRST BYTE HAS NUMBER OF SECTORS FREE ON THAT TRACK.
- ╘HE OTHER THREE BYTES ARE A BIT STREAM. ┬IT ZERO OF THE
- FIRST OF THE THREE BYTES IS SECTOR 0. ╔F THE BIT IS
- SET, THEN THE BLOCK IS FREE.
- $90-$9╞ ─ISK NAME PADDED WITH SHIFTED SPACES ($┴0).
- $┴0-$┴1 ╘WO EXTRA CHARACTERS FOR DISK NAME.
- $┴2-$┴3 ─ISK ╔─.
- $┴4 ╙HIFTED SPACE ($┴0).
- $┴5-$┴6 ┴╙├╔╔ '2┴' FOR ─╧╙ VERSION.
- $┴7-$┴┴ ╙HIFTED SPACES ($┴0).
- $┴┬ ╘RACK FOR ─┼╙╦╘╧╨'S BUFFER.
- $┴├ ╙ECTOR FOR ─┼╙╦╘╧╨'S BUFFER.
- $┴─-$┬├ ┴╙├╔╔ '╟┼╧╙ FORMAT ╓1.1', ONLY THE FIRST 11 BYTES ARE
- USED TO CHECK FOR ╟┼╧╙ FORMAT.
- $┬─-$╞╞ ╞ILLED WITH ZEROES.
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- ╔NFORMATION ╙ECTOR ╞ORMAT 5-1
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- ╔NFORMATION ╙ECTOR
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- ┬YTE # ─ESCRIPTION
- $00 $00, TRACK LINK IS ZERO BECAUSE THERE IS ONLY ONE
- SECTOR.
- $01 $╞╞, NUMBER OF BYTES IN THIS SECTOR.
- $02-$04 $03, $15, $┬╞, ╔NFORMATION SECTOR IDENTIFICATION BYTES.
- $05-$43 ╔CON IMAGE IN SPRITE FORMAT.
- $44 ─╧╙ FILE TYPE.
- $45 ╟┼╧╙ FILE TYPE.
- $46 ╞ILE STRUCTURE, 0 FOR SEQUENTIAL, 1 FOR ╓╠╔╥.
- $47-$48 ╠OAD ADDRESS.
- $49-$4┴ ┼ND OF LOAD ADDRESS.
- $4┬-$4├ ╙TART OF EXECUTION ADDRESS FOR PROGRAM; UNUSED
- OTHERWISE.
- $4─-$60 ├LASS OF FILE; ZERO BYTE TERMINATED.
- $61-$74 ┴UTHOR OF FILE; ZERO BYTE TERMINATED. ╘HE FOLLOWING
- ╟┼╧╙ FILE TYPES HAVE AUTHORS:
- 1 ┬┴╙╔├ ╨ROGRAM 6 ┴PPLICATION
- 2 ┴SSEMBLY ╨ROGRAM 9 ╨RINTER DRIVER
- 5 ─ESK ┴CCESSORY 10 ╔NPUT ─RIVER
- $75-$88 ╞OR ┴PPLICATION ─ATA FILES (AND ─ATA FILES?), THIS IS
- THE CLASS OF THE FILE THAT CREATED THIS FILE.
- $80-$81 ╞OR FONT FILES ONLY, THIS IS THE ╔─ NUMBER FOR THE
- FONT. ╘HIS IS HOW ╟┼╧╙ DISTINGUISHES BETWEEN FONTS FOR
- ╟┼╧WRITE AND ╟┼╧PAINT WITHOUT ACTUALLY STORING THE FONT
- NAME. ┼ACH FONT HAS ITS OWN UNIQUE ╔─ NUMBER. ╘HE KNOWN
- FONTS HAVE THE FOLLOWING ╔─ NUMBERS:
- 0 ┬╙╫ 13 ╘ILDEN
- 1 ╒NIVERSITY 14 ┼VANS
- 2 ├ALIFORNIA 15 ─URANT
- 3 ╥OMA 16 ╘ELEGRAPH
- 4 ─WINELLE 17 ╙UPERB
- 5 ├ORY 18 ┬OWDITCH
- 6 ╘OLMAN 19 ╧RMOND
- 7 ┬UBBLE 20 ┼LMWOOD
- 8 ╞ONTKNOX 21 ╚EARST
- 9 ╚ARMON 21 ┬RENNENS (┬╒╟)
- 10 ═YKONOS 23 ├HANNING
- 11 ┬OALT 24 ╨UTNAM
- 12 ╙TADIUM 25 ╠E├ONTE
- ╘HERE IS A BUG ON ╞ONT╨ACK ╔, THE ┬RENNENS FONT SHOULD
- HAVE AN ╔─ NUMBER OF 22 (OR ╚EARST SHOULD). ╙INCE THESE
- TWO FONTS HAVE THE SAME ╔─ NUMBER, ONLY ONE OF THEM CAN
- BE USED IN ANY FILE, INCLUDING IN ╟┼╧PAINT. ╫HEN ╟┼╧╙
- LOOKS FOR A FONT AFTER THE USER HAS SELECTED IT, IT
- USES THE ╔─ BYTE TO FIND IT. ╔F THE ╔─ BYTES ARE THE
- SAME, THEN THE FIRST FILE ENCOUNTERED IS USED.
- $82-$9╞ ╞OR FONT FILES ONLY; ╔─ WORDS FOR EACH POINT SIZE.
- ╘HESE ARE CODED AS: 64 * ╔─# + POINT SIZE.
- $┴0-$╞╞ ╘EXT FIELD FOR THE FILE; ZERO BYTE TERMINATED.
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-
-
-
- ═EMORY ═AP 6-1
-
-
- $01 ╥6510 ┬UILT-IN 6510 ╔/╧ PORT, BIT ORIENTED
- ┬IT 0 - 0=╥┴═, 1=┬┴╙╔├ ╥╧═
- ┬IT 1 - 0=╥┴═, 1=╦ERNAL ╥╧═
- ┬IT 2 - 0=├HARACTER SET ╥╧═,
- 1=╔/╧ PORTS
- ┬ITS 3-5 - ├ASSETTE CONTROL LINES
- ┬ITS 6-7 - ╒NCONNECTED
- $02-$03 ╟╨╬╘1 ╟ENERAL POINTER, USUALLY USED TO PASS A
- PARAMETER TO A ╦ERNAL ROUTINE.
- $04-$05 ╟╨╬╘2 ╟ENERAL POINTER
- $04 ╘╥┴├╦ ╘RACK NUMBER FOR DISK OPERATIONS
- $05 ╙┼├╘╧╥ ╙ECTOR NUMBER FOR DISK OPERATIONS
- $05 ╥╧╫ ╥OW TO PRINT TEXT ON
- $06-$0┬ ┬╧╪╙╔┌ ┬OX SIZE DESCRIPTOR
- $06 ┬╪╘╧╨ ╘OP ROW OF A BOX
- $07 ┬╪┬╧╘ ┬OTTOM ROW OF A BOX
- $08-$09 ┬╪╠┼╞╘ ╠EFT MARGIN OF A BOX
- $0┴-$0┬ ┬╪╥╔╘┼ ╥IGHT MARGIN OF A BOX
- $0├-$0─ ─╔╥╨╬╘ ─IRECTORY ENTRY POINTER, RETURNED BY
- LOOKUP. ┴LSO USED AS THE DESTINATION
- INDIRECT POINTER FOR HIRES GRAPHIC
- OPERATIONS.
- $0┼-$0╞ ╞╔╠╨╬╘ ╞ILENAME POINTER, USED TO POINT TO A
- FILE NAME FOR FILE OPERATIONS. ┴LSO USED
- AS THE SOURCE INDIRECT POINTER FOR HIRES
- GRAPHIC OPERATIONS.
- $10 ╙╟╘┘╨┼ ╙ELECTED ╟┼╧╙ FILE TYPE; USED BY ╘┴┬╠┼
- $11 ═┴╪╞╔╠ ═AXIMUM NUMBER OF FILES TO FIND; USED BY
- TABLE
- $12-$13 ╘EMPORARY STORAGE AREAS
- $14-$15 ─╔╥╨╘2 ┴LTERNATE DIRECTORY ENTRY POINTER,
- USUALLY POINTS TO $8400. ┴LSO USED TO
- POINT TO A FILE'S INFO SECTOR WHEN IT IS
- IN MEMORY.
- $16 ─╨┴╟┼ ╬UMBER OF DIRECTORY SECTORS TO SKIP
- BEFORE FINDING A HOLE IN THE DIRECTORY;
- USED BY FILE SAVE ROUTINES AND ╚╧╠┼.
- ┴LSO USED AS A PARAMETER VALUE TO BE
- PASSED TO PROGRAMS. ├OULD BE ─┼╙╦╘╧╨'S
- PAGE NUMBER.
- $16-$17 ├╠┴╙╙╨ ╨OINTER TO CLASS STRING; USED BY ╘┴┬╠┼
- $18-$19 ├╧╠╒═╬ ├OLUMN TO PRINT TEXT IN
- $20-$21 ╒NUSED
- $22-$23 ╨┴╘┼╥╬ ╨OINTER TO FILL PATTERN DATA
- $24-$25 ╔╬╨╨╬╘ ╨OINTER TO INPUT BUFFER
- $26-$2┼ ╞╧╬╘─╘ ├URRENT FONT DATA TABLE. ╙EE ╞ONT ╞ILE
- ╞ORMAT FOR A COMPLETE DESCRIPTION OF
- THIS HEADER INFORMATION.
- $26 ╨╠╔╬┼ ╬UMBER OF PIXELS ABOVE LINE OF PRINT.
- ╒NDERLINING APPEARS 1 PIXEL BELOW THE
- LINE OF PRINT.
- $27-$28 ┬╙╠┼╬ ╬UMBER OF BYTES IN THE FONT'S BIT
- STREAMS
- $29 ╨╙╔┌┼ ╨OINT SIZE OF THE FONT
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- ═EMORY ═AP 6-2
-
-
- $2┴-$2┬ ┬╙╨╬╘╙ ┴DDRESS OF BIT STREAM INDICES TABLE
- $2├-$2─ ┬╙╨╬╘ ┴DDRESS OF THE FIRST BIT STREAM
- $2┼ ╙╘┘╠┼ ─EFINES THE CURRENT PRINT STYLE
- ┬IT 7 - ╒NDERLINE
- ┬IT 6 - ┬OLDFACE
- ┬IT 5 - ╥EVERSED VIDEO
- ┬IT 4 - ╔TALICS
- ┬IT 3 - ╧UTLINE
- $2╞ ╙├╬╞╠╟ ├ONTROLS THE SOURCE AND DESTINATION
- SCREENS, USED BY ╥╧╫┴─╥. ┬ITS 6 & 7 ARE
- USED TO DETERMINE THE SOURCE AND
- DESTINATION SCREENS AS FOLLOWS:
- 7 6 $0├-$0─ $0┼-$0╞
- 0 0 ┴╞00 ┴╞00 (═╔─╙├╥┼┼╬)
- 0 1 2 1
- 1 0 1 1
- 1 1 1 2
- ╔F BIT 5 IS SET, THEN ONLY SCREEN 1 IS
- USED FOR TEXT (═ODE 10).
- $30 ═╙╞╠┴╟ ═OUSE CONTROL FLAG
- ┬IT 7 - ═OUSE IS NOT VISIBLE
- ┬IT 6 - ┼NABLE CHECKING MOUSE'S
- POSITION AGAINST CURRENT
- MENU LIMITS.
- ┬IT 5 - ┼NABLE CHECKING MOUSE'S
- POSITION AGAINST CLICK BOX
- TABLE.
- $31-$32 ═╙╨╬╘ ╨OINTER TO THE SPRITE DATA FOR THE
- DEFAULT MOUSE, USUALLY $84├1
- $33 ╘╧╨═ ╘OP MARGIN, USUALLY 0 (╘OP OF SCREEN)
- $34 ┬╧╘═ ┬OTTOM MARGIN, USUALLY 199 (┬OTTOM OF
- SCREEN)
- $35-$36 ╠┼╞╘═ ╠EFT MARGIN
- $37-$38 ╥╔╟╚╘═ ╥IGHT MARGIN, IF AN ATTEMPT IS MADE TO
- PRINT TEXT PAST THIS COLUMN, CONTROL
- PASSES THROUGH $84┴┬.
- $39 ╔╬╨╞╠╟ ╔NPUT CONTROL FLAGS
- ┬IT 7 - ╘HERE IS DATA IN THE
- KEYBOARD BUFFER
- ┬IT 6 - ╔NPUT DEVICE HAS CHANGED
- DIRECTION
- ┬IT 5 - ┬UTTON STATUS HAS CHANGED
- $3┴-$3┬ ═╧╒╙┼╪ ═OUSE'S ╪ POSITION
- $3├ ═╧╒╙┼┘ ═OUSE'S ┘ POSITION
- $3╞-$40 ├┬╨╬╘ ╨OINTER TO CLICK BOX DATA TABLE
- $41-$42 ╩═╨╓┼├ ╩UMP VECTOR USED BY ╔╬─╩═╨
- $43-$44 ╫╔╬╨╬╘ ╨OINTER USED BY ╫╔╬─╧╫ TO POINT TO THE
- WINDOW DESCRIPTOR BLOCK.
- $8┼ ╘HE LEAST SIGNIFICANT 3 BITS OF LOCATION
- $──00, USED BY SERIAL COMMUNICATIONS
- ROUTINES. ╘HESE THREE BITS REPRESENT THE
- ╓╔├ MEMORY BANK NUMBER AND THE ╥╙-232
- OUTPUT LINE.
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