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mainmem.svc.s
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mainmem.svc.s
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* MAINMEM.SVC.S
* (c) Bobbi 2021 GPLv3
*
* Main memory entry points called by Applecorn MOS running in
* aux memory. Each entry point performs some ProDOS service,
* then returns to aux memory.
* 12-Oct-2021 OSFIND exits with bad filename, allows OPENIN(dir),
* exits with MFI error, returns error if no more buffers,
* OPENOUT doesn't try to delete if nothing to delete.
* 13-Oct-2021 OSFIND implementes CLOSE#0.
* 13-Oct-2021 FIND, BGET, BPUT optimised passing registers to main.
* 13-Oct-2021 ARGS, EOF returns errors, optimised.
* 15-Oct-2021 LOADFILE updated.
* 16-Oct-2021 LOADFILE only reads object info once.
* 17-Oct-2021 SAVEFILE updated.
* 18-Oct-2021 Optimised CREATE, removed dead code, RDDATA and WRDATA.
* 23-Oct-2021 Moved all the OSFILE routines together.
* Optimised entry and return from OSFILE routines.
* DELETE returns 'Dir not empty' when appropriate.
* 29-Oct-2021 DRVINFO reads current drive if "".
* 01-Nov-2021 DRVINFO checks reading info on a root directory.
* 02-Nov-2021 SETPERMS passed parsed access byte.
* 03-Nov-2021 Optimised CAT/EX/INFO, DESTROY.
* *BUG* RENAME won't rename between directories, eg RENAME CHARS VDU/CHARS.
* ProDOS file handling to rename a file
RENFILE >>> ENTMAIN
JSR PREPATH ; Preprocess arg1
JSR MFtoTMP ; Stash arg1
JSR COPYMF21 ; Copy arg2
JSR PREPATH ; Preprocess arg2
JSR COPYMF12 ; Put it back in MOSFILE2
JSR TMPtoMF ; Recover arg1->MOSFILE
RENFILE2 LDA #<MOSFILE
STA RENPL+1
LDA #>MOSFILE
STA RENPL+2
LDA #<MOSFILE2
STA RENPL+3
LDA #>MOSFILE2
STA RENPL+4
JSR MLI
DB RENCMD
DW RENPL
>>> XF2AUX,RENRET
* Set name of volume dir, for *TITLE
* Special case of renaming
* Case 1: Disk ID in MOSFILE, title in MOSFILE2
* Case 2: Title in MOSFILE, MOSFILE2=""
*
DISKTITLE >>> ENTMAIN
LDA MOSFILE2
BNE :CASE1
JSR COPYMF12 ; Copy title->MOSFILE2
LDA #$01 ; MOSFILE2 = "@"
STA MOSFILE1
LDA #'@'
STA MOSFILE1 + 1
:CASE1 JSR PREPATH ; Preprocess pathname
BCS :EXIT
JSR TRUNCPATH ; Truncate to top level
JMP RENFILE2
:EXIT >>> XF2AUX,RENRET
* ProDOS file handling for file copying
* Returns with ProDOS error code in A
COPYFILE >>> ENTMAIN
JSR MFtoTMP ; Swap MOSFILE & MOSFILE2
JSR COPYMF21
JSR TMPtoMF2
JSR PREPATH ; Preprocess arg2 (in MOSFILE)
JSR WILDONE ; Handle any wildcards
JSR EXISTS ; See if destination exists
STA :DESTTYPE ; Stash for later
JSR MFtoTMP ; Swap MOSFILE & MOSFILE2 again
JSR COPYMF21
JSR TMPtoMF2
JSR PREPATH ; Preprocess arg1
SEC ; Force wildcard lookup
JSR WILDCARD ; Handle any wildcards in arg1
BCS :NONE
JSR HASWILD
BCC :MAINLOOP ; No wildcards in final segment
LDA :DESTTYPE ; Wildcards, check dest type
CMP #$02 ; Existing directory?
BNE :BADDEST ; If not, error
BRA :MAINLOOP ; Source: wildcard, dest: dir
:NOWILD
:MAINLOOP
LDA MOSFILE2 ; Length
STA :OLDLEN
JSR EXISTS ; See if source is file or dir
CMP #$02 ; Directory
BEQ :SKIP ; Skip directories
LDA :DESTTYPE ; Check dest type
CMP #$02 ; Existing directory?
BNE :NOTDIR
LDY MOSFILE2 ; Dest idx = length
LDA MOSFILE2,Y ; Get last char
CMP #'/' ; Is it slash?
BEQ :HASSLSH
LDA #'/' ; Add a '/' separator
STA MOSFILE2+1,Y
INY
:HASSLSH LDX #$00 ; Source id
:APPLOOP CPX MATCHBUF ; At end?
BEQ :DONEAPP
LDA MATCHBUF+1,X ; Appending MATCHBUF to MOSFILE2
STA MOSFILE2+1,Y
INX
INY
BRA :APPLOOP
:DONEAPP STY MOSFILE2 ; Update length
:NOTDIR LDA :DESTTYPE ; Recover destination type
JSR COPY1FILE ; Copy an individual file
BCS :COPYERR
:SKIP JSR WILDNEXT
BCS :NOMORE
LDA :OLDLEN ; Restore MOSFILE2
STA MOSFILE2
BRA :MAINLOOP
JSR CLSDIR
:EXIT >>> XF2AUX,COPYRET
:NONE JSR CLSDIR
LDA #$46 ; 'File not found'
BRA :EXIT
:BADDEST JSR CLSDIR
LDA #$5E ; 'Wildcards' error
BRA :EXIT
:NOMORE JSR CLSDIR
LDA #$00
BRA :EXIT
:COPYERR PHA
JSR CLSDIR
PLA
BRA :EXIT
:DESTTYPE DB $00
:OLDLEN DB $00
* Copy a single file
* Source is in MOSFILE, DEST in MOSFILE2
* Returns with carry set if error, carry clear otherwise
* Returns with ProDOS error code in A
* Buffer COPYBUF is used for the file copy, to avoid trashing
* directory block in RDBUF (when doing wilcard search)
COPY1FILE LDA #<MOSFILE
STA GINFOPL+1
STA OPENPL2+1
LDA #>MOSFILE
STA GINFOPL+2
STA OPENPL2+2
JSR GETINFO ; GET_FILE_INFO
BCS :ERR
LDA #<MOSFILE2
STA GINFOPL+1
STA DESTPL+1
LDA #>MOSFILE2
STA GINFOPL+2
STA DESTPL+2
JSR MLI ; DESTROY
DB DESTCMD
DW DESTPL
LDA #$07 ; Fix num parms in PL
STA GINFOPL
LDA #$C3 ; Default permissions
STA GINFOPL+3
JSR MLI ; Call CREATE with ..
DB CREATCMD ; .. PL from GET_FILE_INFO
DW GINFOPL
LDX #$0A ; Num parms back as we found it
STX GINFOPL
BCS :ERR ; Error creating dest file
LDA #$00 ; Look for empty slot
JSR FINDBUF
STX :BUFIDX1
JSR BUFADDR
BCS :ERR ; No I/O bufs available
STA OPENPL2+3
STY OPENPL2+4
JSR MLI
DB OPENCMD
DW OPENPL2
BCS :ERR ; Open error
BRA :S1
:ERR SEC ; Report error
RTS
:S1 LDA OPENPL2+5 ; File ref num
STA RDPLCP+1
LDX :BUFIDX1
STA FILEREFS,X ; Record the ref number
LDA #<MOSFILE2
STA OPENPL2+1
LDA #>MOSFILE2
STA OPENPL2+2
LDA #$00 ; Look for empty slot
JSR FINDBUF
STX :BUFIDX2
JSR BUFADDR
BCS :ERRCLS1 ; No I/O bufs available
STA OPENPL2+3
STY OPENPL2+4
JSR MLI
DB OPENCMD
DW OPENPL2
BCS :ERRCLS1
LDA OPENPL2+5 ; File ref num
STA WRTPLCP+1
LDX :BUFIDX2
STA FILEREFS,X ; Record the ref number
:MAINLOOP JSR MLI ; Read a block
DB READCMD
DW RDPLCP
BCC :RDOKAY
CMP #$4C ; Is it EOF?
BEQ :EOFEXIT
BRA :ERRCLS2 ; Any other error
:RDOKAY LDA RDPLCP+6 ; Trans count MSB
STA WRTPLCP+4 ; Request count MSB
LDA RDPLCP+7 ; Trans count MSB
STA WRTPLCP+5 ; Request count MSB
JSR MLI ; Write a block
DB WRITECMD
DW WRTPLCP
BCS :ERRCLS2 ; Write error
BRA :MAINLOOP
:EOFEXIT CLC ; No error
PHP
LDA #$00
PHA
:CLOSE2 LDA WRTPLCP+1 ; Close output file
STA CLSPL+1
JSR CLSFILE
LDX :BUFIDX2
STZ FILEREFS,X
:CLOSE1 LDA RDPLCP+1 ; Close input file
STA CLSPL+1
JSR CLSFILE
LDX :BUFIDX1
STZ FILEREFS,X
PLA
PLP
RTS
:ERRCLS1 SEC
PHP
PHA
BRA :CLOSE1
:ERRCLS2 SEC
PHP
PHA
BRA :CLOSE2
:BUFIDX1 DB $00
:BUFIDX2 DB $00
* ProDOS file handling for MOS OSFIND OPEN call
* Options in A: $40 'r', $80 'w', $C0 'rw'
OFILE >>> ENTMAIN
AND #$C0 ; Keep just action bits
PHA ; Preserve arg for later
JSR PREPATH ; Preprocess pathname
BCS :JMPEXIT1 ; Bad filename
PLA
PHA
CMP #$80 ; Is it "w"?
BEQ :NOWILD ; If so, no wildcards
JSR WILDONE ; Handle any wildcards
:NOWILD JSR EXISTS ; See if file exists ...
TAX
CMP #$02 ; ... and is a directory
BNE :NOTDIR
PLA ; Get action back
BPL :NOTDIR2 ; OPENIN(dir) allowed
LDA #$41 ; $41=Directory exists
PHA ; Balance PLA
:JMPEXIT1 PLA
:JMPEXIT JMP FINDEXIT
:NOTDIR PLA
:NOTDIR2 CMP #$80 ; Write mode
BNE :S1
TXA
BEQ :S0 ; No file, don't try to delete
JSR DODELETE
BCS FINDEXIT ; Abort if error
:S0 LDX #$00 ; LOAD=$0000
LDY #$00
JSR CREATEFILE
BCS FINDEXIT ; Abort if error
* Looking for a buffer should be done before creating a file
:S1 LDA #$00 ; Look for empty slot
JSR FINDBUF
STX BUFIDX
JSR BUFADDR
BCS NOBUFFS ; No empty slot (BUFIDX=FF)
STA OPENPL2+3
STY OPENPL2+4
LDA #<MOSFILE
STA OPENPL2+1
LDA #>MOSFILE
STA OPENPL2+2
JSR MLI
DB OPENCMD
DW OPENPL2
BCS FINDEXIT
LDA OPENPL2+5 ; File ref number
LDX BUFIDX
STA FILEREFS,X ; Record the ref number
FINDEXIT JSR CHKNOTFND ; Convert NotFound to $00
>>> XF2AUX,OSFINDRET
NOBUFFS LDA #$42 ; $42=File buffers full
BNE FINDEXIT
BUFIDX DB $00
* ProDOS file handling for MOS OSFIND CLOSE call
* ProDOS can do CLOSE#0 but we need to manually update FILEREFS
CFILE >>> ENTMAIN
LDX #$00 ; Prepare for one file
TYA ; File ref number
BNE :CFILE1 ; Close one file
LDX #$03 ; Loop through all files
:CFILE0 LDA FILEREFS,X
BEQ :CFILE3 ; Not open, try next
:CFILE1 PHX
PHA
STA CLSPL+1
JSR CLSFILE
BCS :CFILEERR ; Error occured during closing
PLA
JSR FINDBUF
BNE :CFILE2
LDA #$00
STA FILEREFS,X ; Release buffer
:CFILE2 PLX
:CFILE3 DEX
BPL :CFILE0 ; Loop to close all files
LDA #$00
BEQ FINDEXIT
:CFILEERR PLX ; Balance stack
PLX
BCS FINDEXIT
* ProDOS file handling for MOS OSGBPB call
* A=1 : Write bytes to disk, using new seq pointer
* A=2 : Write bytes to disk, ignoring seq pointer
* A=3 : Read bytes from disk, using new seq pointer
* A=4 : Read bytes from disk, ignoring seq pointer
* All others unsupported
GBPB >>> ENTMAIN
PHA
LSR A ; Test LSB of A
BCC :L1 ; A=2 or 4, no seek
LDA GBPBHDL ; File ref number
STA GMARKPL+1
LDY #$02 ; Copy file pointer
:L0 LDA GBPBPTR+0,Y
STA GMARKPL+2,Y
DEY
BPL :L0
JSR MLI ; Perform seek
DB SMARKCMD
DW GMARKPL
BCC :L1
JMP :ERR
:L1 PLA
PHA
CMP #$02 ; If A<=2 WRITE
BCC :WRITE
:READ LDA GBPBHDL ; File ref number
STA READPL2+1
JSR MLI ; Read one byte from file
DB READCMD
DW READPL2
BCS :ERR
LDA GBPBDAT+0
STA ZPMOS+0
LDA GBPBDAT+1
STA ZPMOS+1
LDA BLKBUF
STA WRCARDRAM ; Write to aux
STA (ZPMOS) ; Store byte in aux mem
STA WRMAINRAM ; Write to main again
BRA :UPDCB
:WRITE LDA #<BLKBUF ; Start of destination
STA A4L
LDA #>BLKBUF
STA A4H
LDA GBPBDAT ; Start & end of source buf
STA A1L ; (one byte buffer)
STA A2L
LDA GBPBDAT+1
STA A1H
STA A2H
:S0 CLC ; AUX -> Main
JSR AUXMOVE
LDA GBPBHDL ; File ref number
STA WRITEPL+1
LDA #$01 ; Write one byte
STA WRITEPL+4
LDA #$00
STA WRITEPL+5
JSR WRTFILE ; Write one byte to file
:UPDCB INC GBPBDAT+0 ; Increment data pointer
BNE :S1
INC GBPBDAT+1
:S1 INC GBPBPTR+0 ; Increment file pointer
BNE :S2
INC GBPBPTR+1
BNE :S2
INC GBPBPTR+2
:S2 LDA GBPBNUM+0 ; Decrement number of bytes
BNE :S3
LDA GBPBNUM+1
BEQ :ZERO ; Zero remaining, done!
DEC GBPBNUM+1
:S3 DEC GBPBNUM+0
JMP :L1
:ERR
:ZERO PLA ; Throw away A
>>> ALTZP ; Control block can be in ZP!
STA WRCARDRAM ; Write to aux
LDA GBPBAUXCB+0 ; Copy control block back to aux
STA $B0+0 ; $B0 in AltZP is temp FS workspace
LDA GBPBAUXCB+1
STA $B0+1
LDY #$0C
:L2 LDA GBPBBLK,Y
STA ($B0),Y
DEY
BPL :L2
STA WRMAINRAM ; Write to main again
>>> MAINZP
>>> XF2AUX,OSGBPBRET
* ProDOS file handling for MOS OSBGET call
* Returns with char read in A and error num in Y (or 0)
FILEGET >>> ENTMAIN
STY READPL2+1 ; File ref number
JSR MLI
DB READCMD
DW READPL2
TAY ; Error number in Y
BCS :EXIT
LDY #$00 ; 0=Ok
LDA BLKBUF
:EXIT >>> XF2AUX,OSBGETRET
* ProDOS file handling for MOS OSBPUT call
* Enters with char to write in A
FILEPUT >>> ENTMAIN
STA BLKBUF ; Byte to write
STY WRITEPL+1 ; File ref number
LDA #$01 ; Bytes to write
STA WRITEPL+4
LDA #$00
STA WRITEPL+5
JSR WRTFILE
BCS :FILEPUT2
LDA #$00 ; 0=Ok
:FILEPUT2 >>> XF2AUX,OSBPUTRET
* ProDOS file handling for FSC $01 called by OSBYTE $7F EOF
* Returns EOF status in A ($FF for EOF, $00 otherwise)
* A=channel to test
FILEEOF >>> ENTMAIN
STA GEOFPL+1
STA GMARKPL+1
JSR MLI
DB GEOFCMD
DW GEOFPL
TAY
BCS :EXIT ; Abort with any error
JSR MLI
DB GMARKCMD
DW GMARKPL
TAY
BCS :EXIT ; Abort with any error
SEC
LDA GEOFPL+2 ; Subtract Mark from EOF
SBC GMARKPL+2
STA GEOFPL+2
LDA GEOFPL+3
SBC GMARKPL+3
STA GEOFPL+3
LDA GEOFPL+4
SBC GMARKPL+4
STA GEOFPL+4
LDA GEOFPL+2 ; Check bytes remaining
ORA GEOFPL+3
ORA GEOFPL+4
BEQ :ISEOF ; EOF -> $00
LDA #$FF ; Not EOF -> $FF
:ISEOF EOR #$FF ; EOF -> $FF, Not EOF ->$00
LDY #$00 ; 0=No error
:EXIT >>> XF2AUX,CHKEOFRET
* ProDOS file handling for OSARGS flush commands
FLUSH >>> ENTMAIN
STY FLSHPL+1 ; File ref number
JSR MLI
DB FLSHCMD
DW FLSHPL
JMP TELLEXIT
* ProDOS file handling for OSARGS set ptr command
* GMARKPL+1=channel, GMARKPL+2,+3,+4=offset already set
SEEK >>> ENTMAIN
JSR MLI
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