2021-09-22 02:59:11 +00:00
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* Memory layout in main memory (Apple environment)
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2021-08-30 23:08:22 +00:00
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*
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* ; $0000-$00FF Zero page
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* ; $0100-$01FF Stack
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* ; $0200-$02FF ProDOS string buffers
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* ; $0200-$022F Overwritten by RTC routines
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* ; $0228-$023D
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DRVBUF1 EQU $023E ; $023E Drive
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DRVBUF2 EQU $023F ; $022F Prefix on current drive
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CMDPATH EQU $0280 ; $0280 Path used to start Applecorn
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*
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* ; $0300-$03CF File system core workspace
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* ; $0300-$0382 Filename string buffers
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MOSFILE1 EQU $0300 ; $0300 length
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* ; $0301 64 byte string
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MOSFILE2 EQU $0341 ; $0341 length
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* ; $0342 64 byte string
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* ; $0382-$03BD $3C spare bytes
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* ;
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* ; $03BE-$03CF: local copy of control block
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* ; $03BE FPTR FPTR
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* ; $03BF CHANNEL
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* ; $03C0 LOAD LOAD ADDR
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* ; $03C4 EXEC EXEC COUNT
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* ; $03C8 SIZE START OFFSET
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* ; $03CC ATTR END
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2022-10-10 04:36:53 +00:00
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* ; $03D0-$03EF: ProDOS - reserved for .SYSTEM programs
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* ; $03D0-$03EC Undefined, available
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* ; $03ED-$03EE XFER address
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* ; $03EF ProDOS reserved
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* ; $03F0-$3FF: Monitor/Applesoft locations
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* ; $03F0-$03F1 BRKV
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* ; $03F2-$03F3 RESETV
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* ; $03F4 PWDRUP
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* ; $03F5-$03F7 AMPERV
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* ; $03F8-$03FA USERV (^Y)
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* ; $03FB-$03FD NMIV
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2021-08-30 23:08:22 +00:00
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* ; $03FE-$03FF IRQV
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*
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2022-10-10 04:36:53 +00:00
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* EQU $0400 ; $0400-$07FF Text Page 1 & screen holes - not for general use
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SCREEN EQU $0800 ; $0800-$0BFF Text Page 2
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2021-08-30 23:08:22 +00:00
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IOBUF0 EQU $0C00 ; $0C00-$0FFF For loading ROM, OSFILE, *.
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IOBUF1 EQU $1000 ; $1000-$13FF Four open files for langs
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IOBUF2 EQU $1400 ; $1400-$17FF
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IOBUF3 EQU $1800 ; $1800-$1BFF
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IOBUF4 EQU $1C00 ; $1C00-$1FFF
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2022-10-10 04:36:53 +00:00
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* ; $2000-$3FFF Hi-Res screen 1 - used for transient .SYSTEM loader code
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2021-09-22 02:59:11 +00:00
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* ; $4000- Code, to do: make code move itself
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* -$6FFF
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2022-10-14 05:37:24 +00:00
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BLKBUF EQU $9000 ; $9000-$93FF 512-byte buffer plus channel data
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BLKBUFEND EQU $9200
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2021-09-22 02:59:11 +00:00
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*
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2022-10-10 04:36:53 +00:00
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* ; $BF00-$BFFF ProDOS Global Page - reserved
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2021-08-30 23:08:22 +00:00
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2021-09-22 02:59:11 +00:00
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Memory layout in aux memory (Acorn environment)
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* ; $0000-$00FF Zero page
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* ; $00-$8F Language workspace
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* ; $90-$9F Network workspace
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* ; $A0-$A7 NMI workspace
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* ; $A8-$AF Non-MOS *command workspace
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* ; $B0-$BF Temporary filing system workspace
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* ; $C0-$CF Persistant filing system workspace
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* ; $D0-$DF VDU driver workspace
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* ; $E0-$EE Internal MOS workspace
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* ; $EF-$FF MOS API workspace
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* ; $0100-$01FF Stack
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* ; $0200-$02FF Kernel vectors and workspace
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* ; $0200-$0235 Vectors
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* ; $0236-$028F OSBYTE variables
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* ; $0290-$02ED
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* ; $02EE-$02FF MOS control block
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* ; $0300-$03FF
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* ; $0300-
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* ; $03E0-$03EF XFER workspace
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* ; $03F0-$03FF
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* ; $0400-$07FF Language workspace
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* ; $0800-$0BFF Screen memory
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* ; $0C00-$0DFF --> use as transient command buffer
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* ; $0E00 Default PAGE
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