* Memory layout in main memory (Apple environment) * * ; $0000-$00FF Zero page * ; $0100-$01FF Stack * ; $0200-$02FF ProDOS string buffers * ; $0200-$022F Overwritten by RTC routines * ; $0228-$023D DRVBUF1 EQU $023E ; $023E Drive DRVBUF2 EQU $023F ; $022F Prefix on current drive CMDPATH EQU $0280 ; $0280 Path used to start Applecorn * * ; $0300-$03CF File system core workspace * ; $0300-$0382 Filename string buffers MOSFILE1 EQU $0300 ; $0300 length * ; $0301 64 byte string MOSFILE2 EQU $0341 ; $0341 length * ; $0342 64 byte string * ; $0382-$03BD $3C spare bytes * ; * ; $03BE-$03CF: local copy of control block * ; $03BE FPTR FPTR * ; $03BF CHANNEL * ; $03C0 LOAD LOAD ADDR * ; $03C4 EXEC EXEC COUNT * ; $03C8 SIZE START OFFSET * ; $03CC ATTR END * ; $03D0-$03FF: ProDOS vectors, etc. * ; $03D0-$03D2 JMP WARM * ; $03D3-$03D5 JMP WARM * ; $03D6-$03EC ProDOS * ; $03ED-$03DE XFER address * ; $03EF ProDOS * ; $03F0-$03D1 BRKV * ; $03F2-$03D3 RESETV * ; $03F4 RESETV ACK * ; $03F5-$03F7 JMP AMP * ; $03F8-$03FA JMP USER * ; $03FB-$03FD JMP MON * ; $03FE-$03FF IRQV * * EQU $0400 ; $0400- Can't use as ProDOS uses 'hidden' bytes * ; -$07FF within screen for workspace SCREEN EQU $0800 ; $0800-$0BFF Half 80-col screen or 40-col screen IOBUF0 EQU $0C00 ; $0C00-$0FFF For loading ROM, OSFILE, *. IOBUF1 EQU $1000 ; $1000-$13FF Four open files for langs IOBUF2 EQU $1400 ; $1400-$17FF IOBUF3 EQU $1800 ; $1800-$1BFF IOBUF4 EQU $1C00 ; $1C00-$1FFF * ; $2000-$3FFF Hi-Res screen 1 * ; $4000- Code, to do: make code move itself * -$6FFF BLKBUF EQU $7000 ; $7000-$73FF 512-byte buffer plus channel data BLKBUFEND EQU $7200 * * ; $9600-$BDFF ProDOS buffers * ; $BE00-$BEFF MLI Global workspace * ; $BF00-$BFFF MLI API interface Memory layout in aux memory (Acorn environment) * ; $0000-$00FF Zero page * ; $00-$8F Language workspace * ; $90-$9F Network workspace * ; $A0-$A7 NMI workspace * ; $A8-$AF Non-MOS *command workspace * ; $B0-$BF Temporary filing system workspace * ; $C0-$CF Persistant filing system workspace * ; $D0-$DF VDU driver workspace * ; $E0-$EE Internal MOS workspace * ; $EF-$FF MOS API workspace * ; $0100-$01FF Stack * ; $0200-$02FF Kernel vectors and workspace * ; $0200-$0235 Vectors * ; $0236-$028F OSBYTE variables * ; $0290-$02ED * ; $02EE-$02FF MOS control block * ; $0300-$03FF * ; $0300- * ; $03E0-$03EF XFER workspace * ; $03F0-$03FF * ; $0400-$07FF Language workspace * ; $0800-$0BFF Screen memory * ; $0C00-$0DFF --> use as transient command buffer * ; $0E00 Default PAGE