1255 lines
44 KiB
ArmAsm
1255 lines
44 KiB
ArmAsm
* MAINMEM.SVC.S
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* (c) Bobbi 2021 GPLv3
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*
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* Main memory entry points called by Applecorn MOS running in
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* aux memory. Each entry point performs some ProDOS service,
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* then returns to aux memory.
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* 12-Oct-2021 OSFIND exits with bad filename, allows OPENIN(dir),
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* exits with MFI error, returns error if no more buffers,
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* OPENOUT doesn't try to delete if nothing to delete.
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* 13-Oct-2021 OSFIND implementes CLOSE#0.
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* 13-Oct-2021 FIND, BGET, BPUT optimised passing registers to main.
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* 13-Oct-2021 ARGS, EOF returns errors, optimised.
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* 15-Oct-2021 LOADFILE updated.
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* 16-Oct-2021 LOADFILE only reads object info once.
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* 17-Oct-2021 SAVEFILE updated.
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* 18-Oct-2021 Optimised CREATE, removed dead code, RDDATA and WRDATA.
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* 23-Oct-2021 Moved all the OSFILE routines together.
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* Optimised entry and return from OSFILE routines.
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* DELETE returns 'Dir not empty' when appropriate.
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* 29-Oct-2021 DRVINFO reads current drive if "".
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* 01-Nov-2021 DRVINFO checks reading info on a root directory.
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* 02-Nov-2021 SETPERMS passed parsed access byte.
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* 03-Nov-2021 Optimised CAT/EX/INFO, DESTROY.
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* *BUG* RENAME won't rename between directories, eg RENAME CHARS VDU/CHARS.
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* ProDOS file handling to rename a file
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RENFILE >>> ENTMAIN
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JSR PREPATH ; Preprocess arg1
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JSR MFtoTMP ; Stash arg1
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JSR COPYMF21 ; Copy arg2
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JSR PREPATH ; Preprocess arg2
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JSR COPYMF12 ; Put it back in MOSFILE2
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JSR TMPtoMF ; Recover arg1->MOSFILE
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RENFILE2 LDA #<MOSFILE
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STA RENPL+1
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LDA #>MOSFILE
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STA RENPL+2
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LDA #<MOSFILE2
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STA RENPL+3
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LDA #>MOSFILE2
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STA RENPL+4
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JSR MLI
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DB RENCMD
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DW RENPL
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>>> XF2AUX,RENRET
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* Set name of volume dir, for *TITLE
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* Special case of renaming
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* Case 1: Disk ID in MOSFILE, title in MOSFILE2
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* Case 2: Title in MOSFILE, MOSFILE2=""
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*
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DISKTITLE >>> ENTMAIN
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LDA MOSFILE2
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BNE :CASE1
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JSR COPYMF12 ; Copy title->MOSFILE2
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LDA #$01 ; MOSFILE2 = "@"
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STA MOSFILE1
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LDA #'@'
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STA MOSFILE1 + 1
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:CASE1 JSR PREPATH ; Preprocess pathname
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BCS :EXIT
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JSR TRUNCPATH ; Truncate to top level
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JMP RENFILE2
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:EXIT >>> XF2AUX,RENRET
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* ProDOS file handling for file copying
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* Returns with ProDOS error code in A
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COPYFILE >>> ENTMAIN
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JSR MFtoTMP ; Swap MOSFILE & MOSFILE2
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JSR COPYMF21
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JSR TMPtoMF2
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JSR PREPATH ; Preprocess arg2 (in MOSFILE)
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JSR WILDONE ; Handle any wildcards
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JSR EXISTS ; See if destination exists
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STA :DESTTYPE ; Stash for later
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JSR MFtoTMP ; Swap MOSFILE & MOSFILE2 again
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JSR COPYMF21
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JSR TMPtoMF2
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JSR PREPATH ; Preprocess arg1
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SEC ; Force wildcard lookup
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JSR WILDCARD ; Handle any wildcards in arg1
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BCS :NONE
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JSR HASWILD
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BCC :MAINLOOP ; No wildcards in final segment
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LDA :DESTTYPE ; Wildcards, check dest type
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CMP #$02 ; Existing directory?
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BNE :BADDEST ; If not, error
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BRA :MAINLOOP ; Source: wildcard, dest: dir
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:NOWILD
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:MAINLOOP
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LDA MOSFILE2 ; Length
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STA :OLDLEN
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JSR EXISTS ; See if source is file or dir
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CMP #$02 ; Directory
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BEQ :SKIP ; Skip directories
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LDA :DESTTYPE ; Check dest type
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CMP #$02 ; Existing directory?
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BNE :NOTDIR
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LDY MOSFILE2 ; Dest idx = length
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LDA MOSFILE2,Y ; Get last char
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CMP #'/' ; Is it slash?
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BEQ :HASSLSH
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LDA #'/' ; Add a '/' separator
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STA MOSFILE2+1,Y
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INY
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:HASSLSH LDX #$00 ; Source id
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:APPLOOP CPX MATCHBUF ; At end?
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BEQ :DONEAPP
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LDA MATCHBUF+1,X ; Appending MATCHBUF to MOSFILE2
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STA MOSFILE2+1,Y
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INX
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INY
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BRA :APPLOOP
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:DONEAPP STY MOSFILE2 ; Update length
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:NOTDIR LDA :DESTTYPE ; Recover destination type
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JSR COPY1FILE ; Copy an individual file
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BCS :COPYERR
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:SKIP JSR WILDNEXT
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BCS :NOMORE
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LDA :OLDLEN ; Restore MOSFILE2
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STA MOSFILE2
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BRA :MAINLOOP
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JSR CLSDIR
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:EXIT >>> XF2AUX,COPYRET
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:NONE JSR CLSDIR
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LDA #$46 ; 'File not found'
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BRA :EXIT
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:BADDEST JSR CLSDIR
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LDA #$5E ; 'Wildcards' error
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BRA :EXIT
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:NOMORE JSR CLSDIR
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LDA #$00
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BRA :EXIT
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:COPYERR PHA
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JSR CLSDIR
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PLA
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BRA :EXIT
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:DESTTYPE DB $00
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:OLDLEN DB $00
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* Copy a single file
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* Source is in MOSFILE, DEST in MOSFILE2
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* Returns with carry set if error, carry clear otherwise
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* Returns with ProDOS error code in A
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* Buffer COPYBUF is used for the file copy, to avoid trashing
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* directory block in RDBUF (when doing wilcard search)
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COPY1FILE LDA #<MOSFILE
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STA GINFOPL+1
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STA OPENPL2+1
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LDA #>MOSFILE
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STA GINFOPL+2
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STA OPENPL2+2
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JSR GETINFO ; GET_FILE_INFO
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BCS :ERR
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LDA #<MOSFILE2
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STA GINFOPL+1
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STA DESTPL+1
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LDA #>MOSFILE2
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STA GINFOPL+2
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STA DESTPL+2
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JSR MLI ; DESTROY
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DB DESTCMD
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DW DESTPL
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LDA #$07 ; Fix num parms in PL
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STA GINFOPL
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LDA #$C3 ; Default permissions
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STA GINFOPL+3
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JSR MLI ; Call CREATE with ..
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DB CREATCMD ; .. PL from GET_FILE_INFO
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DW GINFOPL
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LDX #$0A ; Num parms back as we found it
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STX GINFOPL
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BCS :ERR ; Error creating dest file
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LDA #$00 ; Look for empty slot
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JSR FINDBUF
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STX :BUFIDX1
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JSR BUFADDR
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BCS :ERR ; No I/O bufs available
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STA OPENPL2+3
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STY OPENPL2+4
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JSR MLI
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DB OPENCMD
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DW OPENPL2
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BCS :ERR ; Open error
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BRA :S1
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:ERR SEC ; Report error
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RTS
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:S1 LDA OPENPL2+5 ; File ref num
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STA RDPLCP+1
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LDX :BUFIDX1
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STA FILEREFS,X ; Record the ref number
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LDA #<MOSFILE2
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STA OPENPL2+1
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LDA #>MOSFILE2
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STA OPENPL2+2
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LDA #$00 ; Look for empty slot
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JSR FINDBUF
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STX :BUFIDX2
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JSR BUFADDR
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BCS :ERRCLS1 ; No I/O bufs available
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STA OPENPL2+3
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STY OPENPL2+4
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JSR MLI
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DB OPENCMD
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DW OPENPL2
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BCS :ERRCLS1
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LDA OPENPL2+5 ; File ref num
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STA WRTPLCP+1
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LDX :BUFIDX2
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STA FILEREFS,X ; Record the ref number
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:MAINLOOP JSR MLI ; Read a block
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DB READCMD
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DW RDPLCP
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BCC :RDOKAY
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CMP #$4C ; Is it EOF?
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BEQ :EOFEXIT
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BRA :ERRCLS2 ; Any other error
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:RDOKAY LDA RDPLCP+6 ; Trans count MSB
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STA WRTPLCP+4 ; Request count MSB
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LDA RDPLCP+7 ; Trans count MSB
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STA WRTPLCP+5 ; Request count MSB
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JSR MLI ; Write a block
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DB WRITECMD
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DW WRTPLCP
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BCS :ERRCLS2 ; Write error
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BRA :MAINLOOP
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:EOFEXIT CLC ; No error
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PHP
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LDA #$00
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PHA
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:CLOSE2 LDA WRTPLCP+1 ; Close output file
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STA CLSPL+1
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JSR CLSFILE
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LDX :BUFIDX2
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STZ FILEREFS,X
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:CLOSE1 LDA RDPLCP+1 ; Close input file
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STA CLSPL+1
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JSR CLSFILE
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LDX :BUFIDX1
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STZ FILEREFS,X
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PLA
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PLP
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RTS
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:ERRCLS1 SEC
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PHP
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PHA
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BRA :CLOSE1
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:ERRCLS2 SEC
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PHP
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PHA
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BRA :CLOSE2
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:BUFIDX1 DB $00
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:BUFIDX2 DB $00
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* ProDOS file handling for MOS OSFIND OPEN call
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* Options in A: $40 'r', $80 'w', $C0 'rw'
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OFILE >>> ENTMAIN
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AND #$C0 ; Keep just action bits
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PHA ; Preserve arg for later
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JSR PREPATH ; Preprocess pathname
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BCS :JMPEXIT1 ; Bad filename
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PLA
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PHA
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CMP #$80 ; Is it "w"?
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BEQ :NOWILD ; If so, no wildcards
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JSR WILDONE ; Handle any wildcards
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:NOWILD JSR EXISTS ; See if file exists ...
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TAX
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CMP #$02 ; ... and is a directory
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BNE :NOTDIR
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PLA ; Get action back
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BPL :NOTDIR2 ; OPENIN(dir) allowed
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LDA #$41 ; $41=Directory exists
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PHA ; Balance PLA
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:JMPEXIT1 PLA
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:JMPEXIT JMP FINDEXIT
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:NOTDIR PLA
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:NOTDIR2 CMP #$80 ; Write mode
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BNE :S1
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TXA
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BEQ :S0 ; No file, don't try to delete
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JSR DODELETE
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BCS FINDEXIT ; Abort if error
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:S0 LDX #$00 ; LOAD=$0000
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LDY #$00
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JSR CREATEFILE
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BCS FINDEXIT ; Abort if error
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* Looking for a buffer should be done before creating a file
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:S1 LDA #$00 ; Look for empty slot
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JSR FINDBUF
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STX BUFIDX
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JSR BUFADDR
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BCS NOBUFFS ; No empty slot (BUFIDX=FF)
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STA OPENPL2+3
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STY OPENPL2+4
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LDA #<MOSFILE
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STA OPENPL2+1
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LDA #>MOSFILE
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STA OPENPL2+2
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JSR MLI
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DB OPENCMD
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DW OPENPL2
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BCS FINDEXIT
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LDA OPENPL2+5 ; File ref number
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LDX BUFIDX
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STA FILEREFS,X ; Record the ref number
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FINDEXIT JSR CHKNOTFND ; Convert NotFound to $00
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>>> XF2AUX,OSFINDRET
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NOBUFFS LDA #$42 ; $42=File buffers full
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BNE FINDEXIT
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BUFIDX DB $00
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* ProDOS file handling for MOS OSFIND CLOSE call
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* ProDOS can do CLOSE#0 but we need to manually update FILEREFS
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CFILE >>> ENTMAIN
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LDX #$00 ; Prepare for one file
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TYA ; File ref number
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BNE :CFILE1 ; Close one file
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LDX #$03 ; Loop through all files
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:CFILE0 LDA FILEREFS,X
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BEQ :CFILE3 ; Not open, try next
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:CFILE1 PHX
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PHA
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STA CLSPL+1
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JSR CLSFILE
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BCS :CFILEERR ; Error occured during closing
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PLA
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JSR FINDBUF
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BNE :CFILE2
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LDA #$00
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STA FILEREFS,X ; Release buffer
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:CFILE2 PLX
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:CFILE3 DEX
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BPL :CFILE0 ; Loop to close all files
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LDA #$00
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BEQ FINDEXIT
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:CFILEERR PLX ; Balance stack
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PLX
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BCS FINDEXIT
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* ProDOS file handling for MOS OSGBPB call
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* A=1 : Write bytes to disk, using new seq pointer
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* A=2 : Write bytes to disk, ignoring seq pointer
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* A=3 : Read bytes from disk, using new seq pointer
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* A=4 : Read bytes from disk, ignoring seq pointer
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* All others unsupported
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GBPB >>> ENTMAIN
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PHA
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LSR A ; Test LSB of A
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BCC :L1 ; A=2 or 4, no seek
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LDA GBPBHDL ; File ref number
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STA GMARKPL+1
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LDY #$02 ; Copy file pointer
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:L0 LDA GBPBPTR+0,Y
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STA GMARKPL+2,Y
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DEY
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BPL :L0
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JSR MLI ; Perform seek
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DB SMARKCMD
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DW GMARKPL
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BCC :L1
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JMP :ERR
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:L1 PLA
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PHA
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CMP #$02 ; If A<=2 WRITE
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BCC :WRITE
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:READ LDA GBPBHDL ; File ref number
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STA READPL2+1
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JSR MLI ; Read one byte from file
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DB READCMD
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DW READPL2
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BCS :ERR
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LDA GBPBDAT+0
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STA ZPMOS+0
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LDA GBPBDAT+1
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STA ZPMOS+1
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LDA BLKBUF
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STA WRCARDRAM ; Write to aux
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STA (ZPMOS) ; Store byte in aux mem
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STA WRMAINRAM ; Write to main again
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BRA :UPDCB
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:WRITE LDA #<BLKBUF ; Start of destination
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STA A4L
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LDA #>BLKBUF
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STA A4H
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LDA GBPBDAT ; Start & end of source buf
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STA A1L ; (one byte buffer)
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STA A2L
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LDA GBPBDAT+1
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STA A1H
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STA A2H
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:S0 CLC ; AUX -> Main
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JSR AUXMOVE
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LDA GBPBHDL ; File ref number
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STA WRITEPL+1
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LDA #$01 ; Write one byte
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STA WRITEPL+4
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LDA #$00
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STA WRITEPL+5
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JSR WRTFILE ; Write one byte to file
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:UPDCB INC GBPBDAT+0 ; Increment data pointer
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BNE :S1
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INC GBPBDAT+1
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:S1 INC GBPBPTR+0 ; Increment file pointer
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BNE :S2
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INC GBPBPTR+1
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BNE :S2
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INC GBPBPTR+2
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:S2 LDA GBPBNUM+0 ; Decrement number of bytes
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BNE :S3
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LDA GBPBNUM+1
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BEQ :ZERO ; Zero remaining, done!
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DEC GBPBNUM+1
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:S3 DEC GBPBNUM+0
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JMP :L1
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:ERR
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:ZERO PLA ; Throw away A
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>>> ALTZP ; Control block can be in ZP!
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STA WRCARDRAM ; Write to aux
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LDA GBPBAUXCB+0 ; Copy control block back to aux
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STA $B0+0 ; $B0 in AltZP is temp FS workspace
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LDA GBPBAUXCB+1
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STA $B0+1
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LDY #$0C
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:L2 LDA GBPBBLK,Y
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STA ($B0),Y
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DEY
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BPL :L2
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STA WRMAINRAM ; Write to main again
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>>> MAINZP
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>>> XF2AUX,OSGBPBRET
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* ProDOS file handling for MOS OSBGET call
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* Returns with char read in A and error num in Y (or 0)
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FILEGET >>> ENTMAIN
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STY READPL2+1 ; File ref number
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JSR MLI
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DB READCMD
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DW READPL2
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TAY ; Error number in Y
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BCS :EXIT
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LDY #$00 ; 0=Ok
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LDA BLKBUF
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:EXIT >>> XF2AUX,OSBGETRET
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* ProDOS file handling for MOS OSBPUT call
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* Enters with char to write in A
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FILEPUT >>> ENTMAIN
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STA BLKBUF ; Byte to write
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STY WRITEPL+1 ; File ref number
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LDA #$01 ; Bytes to write
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STA WRITEPL+4
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LDA #$00
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STA WRITEPL+5
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JSR WRTFILE
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BCS :FILEPUT2
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LDA #$00 ; 0=Ok
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:FILEPUT2 >>> XF2AUX,OSBPUTRET
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* ProDOS file handling for FSC $01 called by OSBYTE $7F EOF
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* Returns EOF status in A ($FF for EOF, $00 otherwise)
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* A=channel to test
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FILEEOF >>> ENTMAIN
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STA GEOFPL+1
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STA GMARKPL+1
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JSR MLI
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DB GEOFCMD
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DW GEOFPL
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TAY
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BCS :EXIT ; Abort with any error
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JSR MLI
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DB GMARKCMD
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DW GMARKPL
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TAY
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BCS :EXIT ; Abort with any error
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SEC
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LDA GEOFPL+2 ; Subtract Mark from EOF
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SBC GMARKPL+2
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STA GEOFPL+2
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LDA GEOFPL+3
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SBC GMARKPL+3
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STA GEOFPL+3
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LDA GEOFPL+4
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SBC GMARKPL+4
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STA GEOFPL+4
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LDA GEOFPL+2 ; Check bytes remaining
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ORA GEOFPL+3
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ORA GEOFPL+4
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BEQ :ISEOF ; EOF -> $00
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LDA #$FF ; Not EOF -> $FF
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:ISEOF EOR #$FF ; EOF -> $FF, Not EOF ->$00
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LDY #$00 ; 0=No error
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:EXIT >>> XF2AUX,CHKEOFRET
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* ProDOS file handling for OSARGS flush commands
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FLUSH >>> ENTMAIN
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STY FLSHPL+1 ; File ref number
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JSR MLI
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DB FLSHCMD
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DW FLSHPL
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JMP TELLEXIT
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* ProDOS file handling for OSARGS set ptr command
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* GMARKPL+1=channel, GMARKPL+2,+3,+4=offset already set
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SEEK >>> ENTMAIN
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JSR MLI
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|
DB SMARKCMD
|
|
DW GMARKPL
|
|
JMP TELLEXIT
|
|
|
|
|
|
* ProDOS file handling for OSARGS get ptr command
|
|
* and for OSARGs get length command
|
|
* A=ZP, Y=channel
|
|
SIZE LDX #$02 ; $02=SIZE, Read EXT
|
|
BNE TELL2
|
|
TELL LDX #$00 ; $00=TELL, Read PTR
|
|
TELL2 STY GMARKPL+1 ; File ref number
|
|
PHA ; Pointer to zero page
|
|
CPX #$00 ; OSARGS parameter
|
|
BEQ :POS
|
|
JSR MLI
|
|
DB GEOFCMD
|
|
DW GMARKPL ; MARK parms same as EOF parms
|
|
BRA :S1
|
|
:POS JSR MLI
|
|
DB GMARKCMD
|
|
DW GMARKPL
|
|
:S1 PLX ; Pointer to ZP control block
|
|
BCS TELLEXIT ; Exit with error
|
|
>>> ALTZP ; Alt ZP & Alt LC on
|
|
LDA GMARKPL+2
|
|
STA $00,X
|
|
LDA GMARKPL+3
|
|
STA $01,X
|
|
LDA GMARKPL+4
|
|
STA $02,X
|
|
STZ $03,X ; Sizes are $00xxxxxx
|
|
>>> MAINZP ; Alt ZP off, ROM back in
|
|
LDA #$00 ; 0=Ok
|
|
TELLEXIT >>> XF2AUX,OSARGSRET
|
|
|
|
|
|
ZPMOS EQU $30
|
|
|
|
* ProDOS file MOS OSFILE calls
|
|
CALLFILE >>> ENTMAIN
|
|
JSR FILEDISPATCH
|
|
>>> XF2AUX,OSFILERET
|
|
FILEDISPATCH CMP #$00
|
|
BEQ SVCSAVE ; A=00 -> SAVE
|
|
CMP #$FF
|
|
BEQ SVCLOAD ; A=FF -> LOAD
|
|
CMP #$06
|
|
BEQ DELFILE ; A=06 -> DELETE
|
|
BCC INFOFILE ; A=01-05 -> INFO
|
|
CMP #$08
|
|
BEQ MAKEDIR ; A=08 -> MKDIR
|
|
RTS
|
|
SVCSAVE JMP SAVEFILE
|
|
SVCLOAD JMP LOADFILE
|
|
|
|
INFOFILE JSR UPDPATH ; Process path and get info
|
|
JMP COPYFB ; Copy back to aux mem
|
|
|
|
|
|
* ProDOS file handling to delete a file
|
|
* Called by AppleMOS OSFILE
|
|
* Return A=0 no object, A=1 file deleted, A=2 dir deleted
|
|
* A>$1F ProDOS error
|
|
DELFILE JSR UPDPATH ; Process path and get info
|
|
JSR COPYFB ; Copy back to aux mem
|
|
PHA ; Save object type
|
|
JSR DODELETE
|
|
BCC :DELETED ; Success
|
|
|
|
TAX ; X=error code
|
|
PLA ; Get object back
|
|
CPX #$4E
|
|
BNE :DELERROR ; Not 'Insuff. access', return it
|
|
LDX #$4F ; Change to 'Locked'
|
|
|
|
CMP #$02
|
|
BNE :DELERROR ; Wasn't a directory, return 'Locked'
|
|
LDA FBATTR+0
|
|
AND #$08
|
|
BNE :DELERROR ; Dir locked, return 'Locked'
|
|
LDX #$54 ; Change to 'Dir not empty'
|
|
|
|
:DELERROR TXA
|
|
JSR CHKNOTFND
|
|
PHA
|
|
:DELETED PLA ; Get object back
|
|
:EXIT RTS
|
|
|
|
DODELETE LDA #<MOSFILE ; Attempt to destroy file
|
|
STA DESTPL+1
|
|
LDA #>MOSFILE
|
|
STA DESTPL+2
|
|
JSR MLI
|
|
DB DESTCMD
|
|
DW DESTPL
|
|
RTS
|
|
|
|
|
|
* ProDOS file handling to create a directory
|
|
* Invoked by AppleMOS OSFILE
|
|
* Return A=$02 on success (ie: 'directory')
|
|
* A>$1F ProDOS error, translated by OSFILE handler
|
|
MAKEDIR JSR UPDPATH ; Process path and get info
|
|
CMP #$02
|
|
BEQ :EXIT1 ; Dir already exists
|
|
|
|
LDA #$0D ; OBJT='Directory'
|
|
STA CREATEPL+7 ; ->Storage type
|
|
LDA #$0F ; TYPE='Directory'
|
|
LDX #$00 ; LOAD=$0000
|
|
LDY #$00
|
|
JSR CREATEOBJ
|
|
BCS :EXIT ; Failed, exit with ProDOS result
|
|
JSR UPDFB ; Update FILEBLK, returns A=$02
|
|
:EXIT1 JSR COPYFB ; Copy FILEBLK to aux mem
|
|
:EXIT RTS
|
|
|
|
|
|
* ProDOS file handling for MOS OSFILE LOAD call
|
|
* Invoked by AppleMOS OSFILE
|
|
* Return A=01 if successful (meaning 'file')
|
|
* A>$1F ProDOS error, translated by FILERET
|
|
LOADFILE LDX #4
|
|
:LP LDA FBLOAD,X ; Get address to load to
|
|
STA ZPMOS,X
|
|
DEX
|
|
BPL :LP
|
|
JSR PREPATH ; Preprocess pathname
|
|
JSR WILDONE ; Handle any wildcards
|
|
JSR UPDFB ; Get object info
|
|
CMP #$20
|
|
BCS :JMPEXIT ; Error occured
|
|
CMP #$01 ; Is it a file
|
|
BEQ :ISFILE
|
|
ROL A ; 0->0, 2->5
|
|
EOR #$05 ; 0->5, 2->0
|
|
ADC #$41 ; 0->$46, 2->$41
|
|
:JMPEXIT JMP :EXIT2 ; Return error
|
|
|
|
:ISFILE LDA ZPMOS+4 ; If FBEXEC is zero, use addr
|
|
BEQ :CBADDR ; in the control block
|
|
LDA FBLOAD+0 ; Otherwise, use file's address
|
|
STA ZPMOS+0
|
|
LDA FBLOAD+1
|
|
STA ZPMOS+1
|
|
|
|
:CBADDR JSR OPENMOSFILE
|
|
BCS :EXIT2 ; File not opened
|
|
|
|
:L1 LDA OPENPL+5 ; File ref number
|
|
JSR READDATA ; Read data from open file
|
|
|
|
PHA ; Save result
|
|
LDA OPENPL+5 ; File ref num
|
|
STA CLSPL+1
|
|
JSR CLSFILE
|
|
PLA
|
|
BNE :EXIT2
|
|
JSR COPYFB ; Copy FILEBLK to auxmem
|
|
LDA #$01 ; $01=File
|
|
:EXIT2 RTS
|
|
|
|
|
|
* A=channel, MOSZP+0/1=address to load to, TO DO: MOS+4/5=length to read
|
|
READDATA STA READPL+1
|
|
:RDLP JSR RDFILE
|
|
BCS :READERR ; Close file and return any error
|
|
|
|
LDA #<BLKBUF ; LSB of start of data buffer
|
|
STA A1L ; A1=>start of data buffer
|
|
ADC READPL+6 ; LSB of trans count
|
|
TAX ; X=>LSB end of data buffer
|
|
|
|
LDA #>BLKBUF ; MSB of start of data buffer
|
|
STA A1H ; A1=>start of data buffer
|
|
ADC READPL+7 ; MSB of trans count
|
|
TAY ; Y=>MSB end of data buffer
|
|
|
|
TXA
|
|
BNE :L2
|
|
DEY
|
|
:L2 DEX ; XY=XY-1, end address is start+len-1
|
|
STX A2L ; A2=>end of data buffer
|
|
STY A2H
|
|
|
|
LDA ZPMOS+0 ; A4=>address to load to
|
|
STA A4L
|
|
LDA ZPMOS+1
|
|
STA A4H
|
|
INC ZPMOS+1 ; Step to next block
|
|
INC ZPMOS+1
|
|
|
|
SEC ; Main -> AUX
|
|
JSR AUXMOVE ; A4 updated to next address
|
|
JMP :RDLP
|
|
|
|
:READERR CMP #$4C
|
|
BNE :EXITERR
|
|
:EXITOK LDA #$00 ; $00=Success
|
|
:EXITERR RTS
|
|
|
|
|
|
* ProDOS file handling for MOS OSFILE SAVE call
|
|
* Invoked by AppleMOS OSFILE
|
|
* Return A=01 if successful (ie: 'file')
|
|
* A>$1F ProDOS error translated by FILERET
|
|
SAVEFILE SEC ; Compute file length
|
|
LDA FBEND+0
|
|
SBC FBSTRT+0
|
|
STA LENREM+0
|
|
LDA FBEND+1
|
|
SBC FBSTRT+1
|
|
STA LENREM+1
|
|
LDA FBEND+2
|
|
SBC FBSTRT+2
|
|
BNE :TOOBIG ; >64K
|
|
LDA FBEND+3
|
|
SBC FBSTRT+3
|
|
BEQ :L0 ; >16M
|
|
:TOOBIG LDA #$2C ; Bad byte count - file too long
|
|
RTS
|
|
|
|
:L0 JSR PREPATH ; Preprocess pathname
|
|
JSR EXISTS ; See if file exists ...
|
|
CMP #$01
|
|
BEQ :NOTDIR ; Overwrite file
|
|
BCC :NOFILE ; Create new file
|
|
CMP #$02
|
|
BNE :JMPEXIT2
|
|
LDA #$41 ; Dir exists, return $41
|
|
:JMPEXIT2 JMP :EXIT2
|
|
|
|
:NOTDIR LDA #<MOSFILE ; Attempt to destroy file
|
|
STA DESTPL+1
|
|
LDA #>MOSFILE
|
|
STA DESTPL+2
|
|
JSR MLI
|
|
DB DESTCMD
|
|
DW DESTPL
|
|
BCS :EXIT2 ; Error trying to delete
|
|
|
|
:NOFILE LDX FBLOAD+0 ; Auxtype = load address
|
|
LDY FBLOAD+1
|
|
JSR CREATEFILE
|
|
BCS :JMPEXIT2 ; Error trying to create
|
|
JSR OPENMOSFILE
|
|
BCS :JMPEXIT2 ; Error trying to open
|
|
LDA OPENPL+5 ; File ref number
|
|
JSR WRITEDATA
|
|
|
|
:EXIT1 PHA ; Save result
|
|
LDA OPENPL+5 ; File ref num
|
|
STA CLSPL+1
|
|
JSR CLSFILE
|
|
PLA
|
|
BNE :EXIT2 ; Error returned
|
|
JSR UPDFB ; Update FILEBLK
|
|
JSR COPYFB ; Copy FILEBLK to aux mem
|
|
LDA #$01 ; Return A='File'
|
|
:EXIT2 CMP #$4E
|
|
BNE :EXIT3 ; Change 'Insuff. access'
|
|
LDA #$4F ; to 'Locked'
|
|
:EXIT3 RTS
|
|
|
|
|
|
* A=channel, FBSTRT+0/1=address to save from
|
|
* LENREM+0/1=length to write
|
|
WRITEDATA STA WRITEPL+1
|
|
:L1 LDA #$00 ; 512 bytes request count
|
|
STA WRITEPL+4
|
|
LDA #$02
|
|
STA WRITEPL+5
|
|
|
|
LDA LENREM+1
|
|
CMP #$02
|
|
BCS :L15 ; More than 511 bytes remaining
|
|
STA WRITEPL+5
|
|
LDA LENREM+0
|
|
STA WRITEPL+4
|
|
ORA WRITEPL+5
|
|
BEQ :SAVEOK ; Zero bytes remaining
|
|
|
|
:L15 SEC
|
|
LDA LENREM+0 ; LENREM=LENREM-count
|
|
SBC WRITEPL+4
|
|
STA LENREM+0
|
|
LDA LENREM+1
|
|
SBC WRITEPL+5
|
|
STA LENREM+1
|
|
|
|
CLC
|
|
LDA FBSTRT+0
|
|
STA A1L ; A1=>start of this block
|
|
ADC WRITEPL+4
|
|
STA FBSTRT+0 ; Update FBSTRT=>start of next block
|
|
TAX ; X=>end of this block
|
|
|
|
LDA FBSTRT+1
|
|
STA A1H
|
|
ADC WRITEPL+5
|
|
STA FBSTRT+1
|
|
TAY
|
|
|
|
TXA
|
|
BNE :L2
|
|
DEY
|
|
:L2 DEX ; XY=XY-1, end address is start+len-1
|
|
STX A2L ; A2=>end of data buffer
|
|
STY A2H
|
|
|
|
:S2 LDA #<BLKBUF
|
|
STA A4L
|
|
LDA #>BLKBUF
|
|
STA A4H
|
|
CLC ; Aux -> Main
|
|
JSR AUXMOVE ; Copy data from aux to local buffer
|
|
|
|
JSR WRTFILE ; Write the data
|
|
BCS :WRITEERR
|
|
JMP :L1 ; Loop back for next block
|
|
:SAVEOK ; Enter here with A=$00
|
|
:WRITEERR RTS
|
|
LENREM DW $0000 ; Remaining length
|
|
|
|
|
|
CREATEFILE LDA #$01 ; Storage type - file
|
|
STA CREATEPL+7
|
|
LDA #$06 ; Filetype BIN
|
|
|
|
CREATEOBJ STA CREATEPL+4 ; Type = BIN or DIR
|
|
STX CREATEPL+5 ; Auxtype = load address
|
|
STY CREATEPL+6
|
|
JMP CRTFILE
|
|
|
|
|
|
* Process pathname and read object info
|
|
UPDPATH JSR PREPATH ; Process pathname
|
|
BCC UPDFB ; If no error, update control block
|
|
RTS
|
|
|
|
* Update FILEBLK before returning to aux memory
|
|
* Returns A=object type or ProDOS error
|
|
UPDFB LDA #<MOSFILE
|
|
STA GINFOPL+1
|
|
LDA #>MOSFILE
|
|
STA GINFOPL+2
|
|
JSR GETINFO ; Call GET_FILE_INFO
|
|
BCC :UPDFB1
|
|
JMP CHKNOTFND
|
|
|
|
:UPDFB1 LDA GINFOPL+5 ; Aux type LSB
|
|
STA FBLOAD
|
|
STA FBEXEC
|
|
LDA GINFOPL+6 ; Aux type MSB
|
|
STA FBLOAD+1
|
|
STA FBEXEC+1
|
|
STZ FBLOAD+2
|
|
STZ FBEXEC+2
|
|
STZ FBLOAD+3
|
|
STZ FBEXEC+3
|
|
*
|
|
LDA GINFOPL+3 ; Access byte
|
|
CMP #$40 ; Locked?
|
|
AND #$03 ; ------wr
|
|
PHP
|
|
STA FBATTR+0
|
|
ASL A ; -----wr-
|
|
ASL A ; ----wr--
|
|
ASL A ; ---wr---
|
|
ASL A ; --wr----
|
|
PLP
|
|
BCS :UPDFB2
|
|
ORA #$08 ; --wrl---
|
|
:UPDFB2 ORA FBATTR+0 ; --wrl-wr
|
|
STA FBATTR+0
|
|
*
|
|
LDA GINFOPL+11 ; yyyyyyym
|
|
PHA
|
|
ROR A ; ?yyyyyyy m
|
|
LDA GINFOPL+10 ; mmmddddd m
|
|
PHA
|
|
ROR A ; mmmmdddd
|
|
LSR A ; -mmmmddd
|
|
LSR A ; --mmmmdd
|
|
LSR A ; ---mmmmd
|
|
LSR A ; ----mmmm
|
|
STA FBATTR+2
|
|
PLA ; mmmddddd
|
|
AND #31 ; ---ddddd
|
|
STA FBATTR+1
|
|
PLA ; yyyyyyym
|
|
SEC
|
|
SBC #81*2 ; Offset from 1981
|
|
BCS :UPDFB3 ; 1981-1999 -> 00-18
|
|
ADC #100*2 ; 2000-2080 -> 19-99
|
|
:UPDFB3 PHA ; yyyyyyym
|
|
AND #$E0 ; yyy-----
|
|
ORA FBATTR+1 ; yyyddddd
|
|
STA FBATTR+1
|
|
PLA ; yyyyyyym
|
|
AND #$FE ; yyyyyyy0
|
|
ASL A ; yyyyyy00
|
|
ASL A ; yyyyy000
|
|
ASL A ; yyyy0000
|
|
ORA FBATTR+2 ; yyyymmmm
|
|
STA FBATTR+2
|
|
STZ FBATTR+3
|
|
|
|
JSR OPENMOSFILE ; Open file
|
|
BCS :ERR
|
|
LDA OPENPL+5 ; File ref number
|
|
STA GMARKPL+1
|
|
JSR MLI ; Call GET_EOF MLI
|
|
DB GEOFCMD
|
|
DW GMARKPL ; MARK parms same as EOF
|
|
LDA GMARKPL+2
|
|
STA FBSIZE+0
|
|
LDA GMARKPL+3
|
|
STA FBSIZE+1
|
|
LDA GMARKPL+4
|
|
STA FBSIZE+2
|
|
STZ FBSIZE+3
|
|
LDA OPENPL+5 ; File ref number
|
|
STA CLSPL+1
|
|
JSR CLSFILE
|
|
LDA #$01 ; Prepare A=file
|
|
LDX GINFOPL+7
|
|
CPX #$0D ; Is it a directory?
|
|
ADC #$00 ; Becomes A=2 for directory
|
|
:UPDFB5 RTS
|
|
|
|
:ERR
|
|
CHKNOTFND CMP #$44 ; Convert ProDOS 'not found'
|
|
BEQ :NOTFND ; into result=$00
|
|
CMP #$45
|
|
BEQ :NOTFND
|
|
CMP #$46
|
|
BNE :CHKNOTFND2
|
|
:NOTFND LDA #$00
|
|
:CHKNOTFND2 RTS
|
|
|
|
|
|
* Quit to ProDOS
|
|
QUIT JSR AUDIOSTOP ; Shut down audio, dereg ISR
|
|
INC PWRDUP ; Invalidate powerup byte
|
|
STA PAGE1 ; PAGE2 off
|
|
STA CLRALTCHAR ; Alt font off
|
|
JSR MLI
|
|
DB QUITCMD
|
|
DW QUITPL
|
|
RTS
|
|
|
|
* Used for *CAT, *EX and *INFO
|
|
* On entry: b7=0 - short info (*CAT)
|
|
* b7=1 - long info (*INFO, *EX)
|
|
* b6=0 - single entry, parameter is object (*INFO)
|
|
* b6=1 - multiple items, parameter is dir (*CAT, *EX)
|
|
*
|
|
CATALOG >>> ENTMAIN
|
|
STA CATARG ; Stash argument
|
|
CMP #$80 ; Is it *INFO?
|
|
BNE :NOTINFO
|
|
JMP INFO ; Handle entry for *INFO
|
|
:NOTINFO LDA MOSFILE ; Length of pathname
|
|
BEQ :NOPATH ; If zero use prefix
|
|
JSR PREPATH ; Preprocess pathname
|
|
JSR WILDONE ; Handle any wildcards
|
|
JSR EXISTS ; See if path exists ...
|
|
BEQ :NOTFND ; Not found
|
|
CMP #$02
|
|
BEQ :DIRFOUND
|
|
LDA #$0D ; Becomes Not a directory
|
|
:NOTFND EOR #$46 ; $00->$46, $xx->$4B
|
|
BNE CATEXIT
|
|
|
|
:NOPATH JSR GETPREF ; Fetch prefix into PREFIX
|
|
LDX #<PREFIX ; XY=>prefix
|
|
LDY #>PREFIX
|
|
BRA :OPEN
|
|
:DIRFOUND LDX #<MOSFILE ; XY=>specified directory
|
|
LDY #>MOSFILE
|
|
|
|
:OPEN STX OPENPL+1 ; Open the specified directory
|
|
STY OPENPL+2
|
|
JSR OPENFILE
|
|
BCS CATEXIT ; Can't open dir
|
|
|
|
CATREENTRY LDA OPENPL+5 ; File ref num
|
|
STA READPL+1
|
|
JSR RDFILE
|
|
BCS :CATERR
|
|
>>> XF2AUX,PRONEBLK
|
|
|
|
:CATERR CMP #$4C ; EOF
|
|
BNE :NOTEOF
|
|
LDA #$00
|
|
:NOTEOF PHA
|
|
LDA OPENPL+5 ; File ref num
|
|
STA CLSPL+1
|
|
JSR CLSFILE
|
|
PLA
|
|
CATEXIT >>> XF2AUX,STARCATRET
|
|
|
|
* Handle *INFO
|
|
INFO JSR PREPATH ; Preprocess pathname
|
|
SEC
|
|
JSR WILDCARD ; Handle any wildcards
|
|
JSR EXISTS ; Check matches something
|
|
BNE INFOFIRST ; Match found, start listing
|
|
LDA #$46 ; No match, error Not found
|
|
INFOEXIT CMP #$4C ; EOF
|
|
BNE INFOCLS
|
|
LDA #$00 ; EOF is not an error
|
|
INFOCLS PHA
|
|
JSR CLSDIR ; Be sure to close it!
|
|
PLA
|
|
BRA CATEXIT
|
|
|
|
* PRONEBLK call returns here ...
|
|
CATALOGRET >>> ENTMAIN
|
|
LDA CATARG
|
|
CMP #$80 ; Is this an *INFO call?
|
|
BNE CATREENTRY ; No, go back and do another CAT/EX
|
|
|
|
INFOREENTRY JSR WILDNEXT2 ; Start of new block
|
|
BCS INFOEXIT ; No more matches
|
|
INFOFIRST LDA WILDIDX
|
|
CMP #$FF ; Is WILDNEXT about to read new blk?
|
|
BEQ :DONEBLK ; If so, print this blk first
|
|
JSR WILDNEXT2
|
|
BCC INFOFIRST ; Find more entries
|
|
:DONEBLK >>> XF2AUX,PRONEBLK
|
|
|
|
CATARG DB $00
|
|
|
|
|
|
* Helper routine to truncate path in MOSFILE at the top level
|
|
* So '/FOO/BAR/BAZ' -> '/FOO'
|
|
TRUNCPATH LDX #$01 ; Skip over initial '/'
|
|
:L1 CPX MOSFILE ; See if end of string
|
|
BCS :EXIT ; If so ... we are done
|
|
BEQ :EXIT
|
|
LDA MOSFILE+1,X ; Get char from path
|
|
CMP #'/' ; See if it is slash
|
|
BNE :NOTSLASH
|
|
STX MOSFILE ; If so, truncate here
|
|
BRA :EXIT
|
|
:NOTSLASH INX
|
|
BRA :L1
|
|
:EXIT RTS
|
|
|
|
|
|
* Set prefix. Used by *CHDIR/*DRIVE to change directory
|
|
* Y= $00 - CHDIR, select any directory
|
|
* Y<>$00 - DRIVE, must select root
|
|
*
|
|
SETPFX >>> ENTMAIN
|
|
PHY ; Save CHDIR/DRIVE flag
|
|
JSR PREPATH ; Preprocess pathname
|
|
BCS :EXIT
|
|
JSR WILDONE ; Handle any wildcards
|
|
LDA #$2E
|
|
BCS :EXIT ; Exit with wildcard path
|
|
PLY ; CHDIR/DRIVE flag
|
|
CPY #$00 ; If <> $00 (ie: *DRIVE)
|
|
BEQ :CHDIR
|
|
JSR TRUNCPATH ; Truncate to top level
|
|
:CHDIR LDA #<MOSFILE
|
|
STA SPFXPL+1
|
|
LDA #>MOSFILE
|
|
STA SPFXPL+2
|
|
JSR MLI ; SET_PREFIX
|
|
DB SPFXCMD
|
|
DW SPFXPL
|
|
|
|
:EXIT >>> XF2AUX,CHDIRRET
|
|
|
|
|
|
* Obtain info on total/used blocks
|
|
DRVINFO >>> ENTMAIN
|
|
LDA MOSFILE
|
|
BNE :DRVINF2
|
|
INC MOSFILE
|
|
LDA #'@'
|
|
STA MOSFILE+1 ; Convert "" to "@"
|
|
:DRVINF2 JSR PREPATH
|
|
BCS :EXIT
|
|
JSR TRUNCPATH ; Truncate to top level
|
|
LDA #<MOSFILE
|
|
STA GINFOPL+1
|
|
LDA #>MOSFILE
|
|
STA GINFOPL+2
|
|
JSR GETINFO ; GET_FILE_INFO
|
|
BCS :EXIT
|
|
LDA GINFOPL+7
|
|
CMP #$0F
|
|
BNE :EXIT1 ; Not a drive, exit with 'Bad drive'
|
|
LDA GINFOPL+8 ; Blocks used LSB
|
|
STA BLKBUF+0
|
|
LDA GINFOPL+9 ; Blocks used MSB
|
|
STA BLKBUF+1
|
|
LDA GINFOPL+5 ; Total blocks LSB
|
|
STA BLKBUF+2
|
|
LDA GINFOPL+6 ; Total blocks MSB
|
|
STA BLKBUF+3
|
|
LDA #$00 ; $00=Ok
|
|
|
|
:EXIT CMP #$46
|
|
BNE :EXIT2
|
|
:EXIT1 LDA #$2A ; Change 'Not found' to 'Bad drive'
|
|
:EXIT2 >>> XF2AUX,FREERET
|
|
|
|
|
|
* Change file permissions, for *ACCESS
|
|
* Filename in MOSFILE, access mask in A
|
|
*
|
|
SETPERM >>> ENTMAIN
|
|
PHA ; Save access mask
|
|
JSR PREPATH ; Preprocess pathname
|
|
BCS :SYNERR
|
|
CLC
|
|
JSR WILDCARD ; Handle any wildcards
|
|
BCS :NONE
|
|
BCC :MAINLOOP
|
|
* STZ :LFLAG
|
|
* STZ :WFLAG
|
|
* STZ :RFLAG
|
|
* LDX MOSFILE2 ; Length of arg2
|
|
* INX
|
|
*:L1 DEX
|
|
* CPX #$00
|
|
* BEQ :MAINLOOP
|
|
* LDA MOSFILE2,X ; Read arg2 char
|
|
* CMP #'L' ; L=Locked
|
|
* BNE :S1
|
|
* STA :LFLAG
|
|
* BRA :L1
|
|
*:S1 CMP #'R' ; R=Readable
|
|
* BNE :S2
|
|
* STA :RFLAG
|
|
* BRA :L1
|
|
*:S2 CMP #'W' ; W=Writable
|
|
* BNE :ERR2 ; Bad attribute
|
|
* STA :WFLAG
|
|
* BRA :L1
|
|
|
|
:SYNERR LDA #$40 ; Invalid pathname syn
|
|
BRA :EXIT
|
|
:NONE JSR CLSDIR
|
|
LDA #$46 ; 'File not found'
|
|
BRA :EXIT
|
|
:MAINLOOP LDA #<MOSFILE
|
|
STA GINFOPL+1
|
|
LDA #>MOSFILE
|
|
STA GINFOPL+2
|
|
JSR GETINFO ; GET_FILE_INFO
|
|
BCS :EXIT
|
|
PLA ; Access byte
|
|
PHA
|
|
|
|
* LDA GINFOPL+3 ; Access byte
|
|
* AND #$03 ; Start with R, W off
|
|
* ORA #$C0 ; Start with dest/ren on
|
|
* LDX :RFLAG
|
|
* BEQ :S3
|
|
* ORA #$01 ; Turn on read enable
|
|
*:S3 LDX :WFLAG
|
|
* BEQ :S4
|
|
* ORA #$02 ; Turn on write enable
|
|
*:S4 LDX :LFLAG
|
|
* BEQ :S5
|
|
* AND #$3D ; Turn off destroy/ren/write
|
|
|
|
:S5 STA GINFOPL+3 ; Access byte
|
|
JSR SETINFO ; SET_FILE_INFO
|
|
JSR WILDNEXT
|
|
BCC :MAINLOOP
|
|
* BCS :NOMORE
|
|
:NOMORE JSR CLSDIR
|
|
LDA #$00
|
|
* BRA :EXIT
|
|
:EXIT PLX ; Drop access byte
|
|
>>> XF2AUX,ACCRET
|
|
:ERR2 LDA #$53 ; Invalid parameter
|
|
BRA :EXIT
|
|
|
|
*:LFLAG DB $00 ; 'L' attribute
|
|
*:WFLAG DB $00 ; 'W' attribute
|
|
*:RFLAG DB $00 ; 'R' attribute
|
|
|
|
|
|
* Multi file delete, for *DESTROY
|
|
* Filename in MOSFILE
|
|
*
|
|
MULTIDEL >>> ENTMAIN
|
|
JSR PREPATH ; Preprocess pathname
|
|
BCS :EXIT
|
|
* CLC ; CC already set
|
|
JSR WILDCARD ; Handle any wildcards
|
|
BCC :MAINLOOP
|
|
LDA #$46 ; 'File not found'
|
|
BRA :DELERR
|
|
:MAINLOOP JSR DODELETE
|
|
BCS :DELERR
|
|
JSR WILDNEXT
|
|
BCC :MAINLOOP ; More to do
|
|
LDA #$00 ; $00=Done
|
|
:DELERR PHA
|
|
JSR CLSDIR
|
|
PLA
|
|
:EXIT >>> XF2AUX,DESTRET
|
|
|
|
|
|
* Read machid from auxmem
|
|
MACHRD LDA ROMIN
|
|
LDA ROMIN
|
|
LDA $FBC0
|
|
SEC
|
|
JSR $FE1F
|
|
BRA MAINRDEXIT
|
|
|
|
* Read mainmem from auxmem
|
|
MAINRDMEM STA A1L
|
|
STY A1H
|
|
LDA ROMIN
|
|
LDA ROMIN
|
|
LDA (A1L)
|
|
MAINRDEXIT >>> XF2AUX,NULLRTS ; Back to an RTS
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|