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Applecorn/auxmem.hostfs.s
jgharston 901ad6678c Sorted HOSTFS commands into order 
Sorted HOSTFS commands into order, and slight tweek so I can concentrate on oscli.s
2022-10-09 15:24:36 +01:00

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* AUXMEM.HOSTFS.S
* (c) Bobbi 2021 GPL v3
*
* AppleMOS Host File System
* 29-Aug-2021 Generalised CHKERROR routone, checks for and
* translates ProDOS errors into Acorn errors
* Set &E0=&FF for testing to report ProDOS errors
* 30-Aug-2021 FSC commands moved to here
* Command line set by *RUN, and read by OSARGS
* 20-Sep-2021 *FREE uses new PRDECIMAL routine
* 12-Oct-2021 OSFIND checks return value from calling maincode.
* 12-Oct-2021 BGET and BPUT check for returned error.
* 13-Oct-2021 FIND, BGET, BPUT optimised passing registers to main.
* 13-Oct-2021 ARGS, EOF returns errors, optimised passing registers.
* 14-Oct-2021 Tidied FILE handler.
* 23-Oct-2021 Uses single dispatch to mainmem FILE handler.
* 24-Oct-2021 Tidied FSC handler. Optimised CATALOG, CAT shows access.
* *EX can use two columns. *OPT stored.
* 29-Oct-2021 Bad *command->Bad command, bad *RUN->File not found.
* Optimised RENAME, COPY, CHDIR, DRIVE. FREE<cr> allowed.
* 01-Oct-2021 DRIVE, CHDIR shares same code, checking moved to maincode.
* 02-Oct-2021 ACCESS uses generic access byte parsing.
* PRACCESS shares code with ACCESS.
* 03-Oct-2021 PARSNAME checks filename length<64.
* 09-Oct-2022 Sorted commands into order.
* $B0-$BF Temporary filing system workspace
* $C0-$CF Persistant filing system workspace
FSXREG EQU $C0
FSYREG EQU $C1
FSAREG EQU $C2
FSZPC3 EQU $C3 ; (unused so far)
FSCTRL EQU FSXREG ; =>control block
FSPTR1 EQU $C4 ; =>directory entry
FSPTR2 EQU $C6 ; (unused so far)
FSNUM EQU $C8 ; 32-bit number, cat file count
FSACCBYTE EQU FSNUM+1 ; access bits
FSZPCC EQU $CC ; (unused so far)
FSCMDLINE EQU $CE ; command line address
* OSFIND - open/close a file for byte access
FINDHND PHX
PHY
PHA
CMP #$00 ; A=$00 = close
BEQ :CLOSE
PHA
JSR PARSNAME ; Copy filename->MOSFILE
PLA ; Recover options
>>> XF2MAIN,OFILE
:CLOSE >>> XF2MAIN,CFILE ; Pass A,Y to main code
OSFINDRET >>> ENTAUX
JSR CHKERROR ; Check if error returned
PLY ; Value of A on entry
BNE :S1 ; It wasn't close
TYA ; Preserve A for close
:S1 PLY
PLX
RTS
* OSGBPB - Get/Put a block of bytes to/from an open file
* Supports commands A=1,2,3,4 others unsupported
GBPBHND CMP #4
BCC :S1
RTS ; Not supported: regs unchanged
:S1 PHX
PHY
PHA
>>> WRTMAIN
STX GBPBAUXCB+0 ; Copy address of control block ..
STY GBPBAUXCB+1 ; .. to main mem
>>> WRTAUX
JSR XYtoLPTR ; Copy control block to GBPBBLK ..
LDY #$0C ; .. in main memory
>>> WRTMAIN
:L1 LDA (OSLPTR),Y
STA GBPBBLK,Y
DEY
BPL :L1
>>> WRTAUX
PLA ; A => OSGBPB command
>>> XF2MAIN,GBPB
OSGBPBRET >>> ENTAUX
PLY
PLX
PHY
LDY #$05 ; Check if bytes left = 0
LDA (OSLPTR),Y
BNE :BYTESLEFT
INY
LDA (OSLPTR),Y
BNE :BYTESLEFT
CLC
BRA :S2
:BYTESLEFT SEC ; Set carry if bytes left
:S2 PLY
LDA #$00 ; A=0 means supported command
RTS
* OSBPUT - write one byte to an open file
BPUTHND PHX
PHY
PHA ; Stash char to write
>>> XF2MAIN,FILEPUT ; Pass A,Y to main code
OSBPUTRET >>> ENTAUX
JSR CHKERROR
CLC ; Means no error
PLA
PLY
PLX
RTS
* OSBGET - read one byte from an open file
BGETHND PHX
PHY
>>> XF2MAIN,FILEGET ; Pass A,Y to main code
OSBGETRET >>> ENTAUX
CPY #$01
BCC :EXIT ; If no error, return CC
LDA #$FE
CPY #$4C
BEQ :EXIT ; If at EOF, return CS
TYA
JSR CHKERROR
:EXIT PLY
PLX
RTS
* OSARGS - adjust file arguments
* On entry, A=action
* X=>4 byte ZP control block
* Y=file handle
* Y<>0 A=FF Flush channel Y
* A=00 Read PTR#Y
* A=01 Write PTR#Y
* A=02 Read EXT#Y
* A=03 Write EXT#Y
* (A=04 Read alloc#Y)
* (A=05 Read EOF#Y)
* (A=06 Write alloc#Y)
* Y=0 A=FF Flush all channels
* A=00 Return filing system number in A
* A=01 Read command line address
* (A=02 Read NFS bugfix flag)
* (A=03 Read LIBFS filing system)
* (A=04 Read used disk space)
* (A=05 Read free disk space)
* On exit, A=0 - implemented (except ARGS 0,0)
* A - preserved=unimplemented
* X,Y - preserved
* control block updated for 'read' calls
* control block preserved otherwise
*
ARGSHND PHX
PHY
PHA
CPY #$00
BNE :HASFILE
CMP #$00 ; Y=0,A=0 => current file sys
BNE :S1
PLA
LDA #105 ; 105=AppleFS filing system
PLY
PLX
RTS
:S1 CMP #$01 ; Y=0,A=1 => addr of CLI
BNE :S2
LDA FSCMDLINE+0
STA $00,X
LDA FSCMDLINE+1
STA $01,X
LDA #$FF
STA $02,X
STA $03,X
JMP OSARGSDONE ; Implemented
:S2 CMP #$FF ; Y=0,A=FF => flush all files
BNE :IEXIT
JMP :FLUSH
:IEXIT JMP :EXIT ; Exit preserved
:HASFILE CMP #$00 ; Y!=0,A=0 => read seq ptr
BNE :S3
TXA
>>> XF2MAIN,TELL ; A=ZP, Y=channel
:S3 CMP #$01 ; Y!=0,A=1 => write seq ptr
BNE :S4
>>> WRTMAIN
STY GMARKPL+1 ; Write to MLI control block
LDA $00,X
STA GMARKPL+2
LDA $01,X
STA GMARKPL+3
LDA $02,X
STA GMARKPL+4
>>> WRTAUX
>>> XF2MAIN,SEEK ; A=???, Y=channel
:S4 CMP #$02 ; Y!=0,A=2 => read file len
BNE :S5
TXA
>>> XF2MAIN,SIZE ; A=ZP, Y=channel
:S5 CMP #$FF ; Y!=0,A=FF => flush file
BNE :EXIT
:FLUSH >>> XF2MAIN,FLUSH
:EXIT PLA ; Unimplemented
PLY
PLX
RTS
OSARGSRET >>> ENTAUX
JSR CHKERROR
OSARGSDONE PLA
LDA #0 ; Implemented
PLY
PLX
RTS
* OSFILE - perform actions on entire files/objects
* On entry, A=action
* XY=>control block
* On exit, A=preserved if unimplemented
* A=0 object not found (not load/save)
* A=1 file found
* A=2 directory found (not load/save)
* XY preserved
* control block updated
*
OSFILEMIN EQU $FF ; $FF=LOAD
OSFILEMAX EQU $08 ; $08=MKDIR
FILEHND PHX
PHY
PHA
CLC
ADC #256-OSFILEMIN
CMP #OSFILEMAX+257-OSFILEMIN ; NB: LtoR evaluation
BCS FILEIGNORE
STX FSCTRL+0 ; FSCTRL=>control block
STY FSCTRL+1
LDA (FSCTRL) ; XY=>filename
TAX
LDY #$01
LDA (FSCTRL),Y
TAY
JSR PARSNAME ; Copy filename->MOSFILE
LDY #$11
>>> WRTMAIN
:L1 LDA (FSCTRL),Y ; Copy control block to auxmem
STA FILEBLK,Y
DEY
BPL :L1
>>> WRTAUX
PLA ; Get action back
>>> XF2MAIN,CALLFILE
* On return here, A<$20 return to caller, A>$1F ProDOS error
OSFILERET >>> ENTAUX
JSR CHKERROR ; Check if error returned
PHA
LDY #$11 ; Copy updated control block back
:L3 LDA OSFILECB,Y ; Mainmem left it in OSFILECB
STA (FSCTRL),Y
DEY
BPL :L3
FILEIGNORE PLA ; Returned object type
PLY ; No error, return to caller
PLX
RTS
* FSC Command Table
*******************
* These are commands specific to the filing system that can't be
* called via OSFILE, OSFSC, etc.
* Syntax is:
* <afsp> - ambiguous file specifier, acts on a single file, error if not file, wildcards allowed
* <fsp> - unambiguous file specifier, acts on a single file, error if not file, wildcards not allowed
* <dir> - directory, error if not directory
* <drv> - drive, eg :1 :2 :61, error if not drive
* <*objspec*> - able to act on multiple objects, any object type, wildcards allowed
* <access> - access string
* <title> - disk title
* (<...>) - optional
*
FSCCOMMAND ASC 'ACCESS'
DB $FF
DW FSCACCESS-1 ; ACCESS <*objspec*> <access>, LPTR=>params
ASC 'CD'
DB $FF
DW FSCCHDIR-1 ; CD <dir> , LPTR=>params
ASC 'CHDIR'
DB $FF
DW FSCCHDIR-1 ; CHDIR <dir>, LPTR=>params
ASC 'COPY'
DB $FF
DW FSCCOPY-1 ; COPY <*objspec*> <dest>, LPTR=>params
ASC 'DIR'
DB $FF
DW FSCCHDIR-1 ; DIR <*objspec*>, LPTR=>params
ASC 'DESTROY'
DB $FF
DW FSCDESTROY-1 ; DESTROY <*objspec*> (Y), LPTR=>params
ASC 'DRIVE'
DB $FF
DW FSCDRIVE-1 ; DRIVE <drv>, LPTR=>params
ASC 'FREE'
DB $FF
DW FSCFREE-1 ; FREE (<drv>), LPTR=>params
ASC 'TITLE'
DB $FF
DW FSCTITLE-1 ; TITLE (<drv>) <title>, LPTR=>params
*
DB $FF ; Terminator
* FSC Dispatch Table
********************
FSCDISPATCH DW FSCOPT-1 ; A=0 - *OPT
DW CHKEOF-1 ; A=1 - Read EOF
DW FSCRUN-1 ; A=2 - */filename
DW FSC03-1 ; A=3 - *command
DW FSCRUN-1 ; A=4 - *RUN
DW FSCCAT-1 ; A=5 - *CAT
DW FSCUKN-1 ; A=6
DW FSCUKN-1 ; A=7
DW FSCUKN-1 ; A=8
DW FSCCAT-1 ; A=9 - *EX
DW FSCCAT-1 ; A=10 - *INFO
DW FSCUKN-1 ; A=11
DW FSCRENAME-1 ; A=12 - *RENAME
* OSFSC - miscellanous file system calls
*****************************************
* On entry, A=action, XY=>command line
* or A=action, X=param1, Y=param2
* On exit, A=preserved if unimplemented
* A=0 if implemented
* X,Y=any return values
*
FSCHND CMP #13
BCS FSCUKN
STA FSAREG
STX FSXREG
STY FSYREG
ASL A
TAX
LDA FSCDISPATCH+1,X
PHA
LDA FSCDISPATCH+0,X
PHA
FSCNULL LDA FSAREG
LDY FSYREG
LDX FSXREG ; Set EQ/NE from X
FSCUKN
FSCRET RTS
* OSFSC 00 - *OPT function
* Entered with A=$00 and EQ/NE from X
FSCOPT BEQ :OPT0
CPX #$05
BCS :OPTNULL
CPY #$04
BCS :OPTNULL
LDA FSFLAG2
AND :OPTMSK-1,X
EOR :OPTSET-0,Y
AND :OPTMSK-1,X
EOR :OPTSET-0,Y
:OPT0 STA FSFLAG2
:OPTNULL RTS
:OPTMSK DB $3F,$CF,$F3,$FC
:OPTSET DB $00,$55,$AA,$FF
*FSCUKN
* DO DEBUG
* PHA
* LDA #<OSFSCM
* LDY #>OSFSCM
* JSR PRSTR
* PLA
* FIN
* RTS
* DO DEBUG
*OSFSCM ASC 'OSFSC.'
* DB $00
* FIN
* OSFSC 01 - Read EOF function
* X=File ref number
*
CHKEOF TXA ; A=channel
>>> XF2MAIN,FILEEOF
CHKEOFRET >>> ENTAUX
TAX ; Return code -> X
TYA ; Y=any ProDOS error
JMP CHKERROR
* OSFSC 03 - *command, fall back to *RUN command
* XY=>command line
*
FSC03 JSR XYtoLPTR
LDX #<FSCCOMMAND
LDY #>FSCCOMMAND
JSR CLILOOKUP
BEQ FSCRET ; Matched, return
JSR LPTRtoXY ; Fall through to *RUN
LDA #$FE ; Will become A=$05
* OSFSC 02 - */filename, OSFSC 04 - *RUN filename
* XY=>pathname
*
FSCRUN PHA
STX OSFILECB+0 ; Pointer to filename
STY OSFILECB+1
JSR XYtoLPTR
FSCRUNLP LDA (OSLPTR),Y ; Look for command line
INY
CMP #'!'
BCS FSCRUNLP
DEY
JSR SKIPSPC
JSR LPTRtoXY
STX FSCMDLINE+0 ; Set CMDLINE=>command line
STY FSCMDLINE+1 ; Collected by OSARGS 1,0
PLA
EOR #$FB ; Convert $FE->$05, $02/$04->$Fx
BMI :FSCRUN2 ; *RUN, go direct to LOAD
JSR :FSCCALL ; Do an initial INFO
DEC A ; $01->$00
BEQ :FSCRUN2 ; A file, load and run it
JMP FSCNULL ; Not a file, return all preserved
:FSCRUN2 LDA #$FF ; A=LOAD
STA OSFILECB+6 ; Use file's address
JSR :FSCCALL ; LOAD the file
JSR :CALLCODE ; Call the loaded code
LDA #$00 ; A=0 on return
RTS
:FSCCALL LDX #<OSFILECB ; Pointer to control block
LDY #>OSFILECB
JMP OSFILE
:CALLCODE LDA #$01 ; A=1 - entering code
SEC ; Not from RESET
JMP (OSFILECB+6) ; Jump to EXEC addr
* Display catalog entries and info
* A=5 *CAT, A=9 *EX, A=10 *INFO
* XY=>pathname
*
FSCCAT EOR #$06
CLC
ROR A ; 01100000=*CAT
ROR A ; 11100000=*EX
ROR A ; 10000000=*INFO
ROR A ; b7=long info
STA FSAREG ; b6=multiple items
JSR PARSNAME ; Copy filename->MOSFILE
LDA FSAREG ; Get ARG back
>>> XF2MAIN,CATALOG
STARCATRET >>> ENTAUX
JSR CHKERROR ; See if error occurred
JSR FORCENL
LDA #0 ; 0=OK
RTS
* Print one block of a catalog. Called by CATALOG
* Block is in AUXBLK
PRONEBLK >>> ENTAUX
LDA #<AUXBLK+4 ; FSPTR1=>first entry
STA FSPTR1+0
LDA #>AUXBLK+4
STA FSPTR1+1
LDA #13 ; Max 13 entries per block
STA FSNUM
:CATLP LDY #$00
LDA (FSPTR1),Y ; Get storage type
CMP #$E0
BCC :NOTKEY ; Not a key block
* Print directory name
LDA #<:DIRM
LDY #>:DIRM
JSR PRSTR
SEC
:NOTKEY JSR PRONEENT ; CC=entry, CS=header
CLC ; Step to next entry
LDA FSPTR1+0
ADC #$27
STA FSPTR1+0
LDA FSPTR1+1
ADC #$00
STA FSPTR1+1
DEC FSNUM
BNE :CATLP ; Loop for all entries
>>> XF2MAIN,CATALOGRET
:DIRM ASC 'Directory: '
DB $00
* Print a single directory entry
* On entry: A = dirent index in AUXBLK
* CC=entry, CS=header
PRONEENT LDY #$00 ; Characters printed
LDA (FSPTR1),Y
AND #$0F ; Len of filename
BEQ NULLENT ; Inactive entry
PHP
TAX
:L2 INY
LDA (FSPTR1),Y
JSR OSWRCH ; Print filename
DEX
BNE :L2
:S2 PLP
BCS :EXITHDR ; Header entry, no info
JSR PRSPACES ; Pad after filename
BIT FSAREG
BMI :CATINFO ; Display object info
JMP PRACCESS
:EXITHDR JMP OSNEWL
* Print object catalog info
:CATINFO LDY #$21
LDX #3
LDA #0
JSR PRADDR0
LDA #'+'
JSR OSWRCH
LDY #$17
JSR PRADDR
JSR PRSPACE
JSR PRACCESS
BIT FSFLAG2
BMI CATLONG ; *OPT 1,2 - detailed EX display
LDY #$0A
PRSPACES JSR PRSPACE
INY
CPY #$10
BCC PRSPACES
NULLENT RTS
* Print extended catalog info
CATLONG LDY #$21
JSR PRDATETIME
LDY #$18
JSR PRDATETIME
JMP OSNEWL
PRDATETIME JSR PRSPACE
JSR PRSPACE
LDA (FSPTR1),Y
PHA
AND #$1F
JSR PRDECSLH ; Day
INY
LDA (FSPTR1),Y
ASL A
PLA
ROL A
ROL A
ROL A
ROL A
AND #$0F
JSR PRDECSLH ; Month
LDA (FSPTR1),Y
PHA
CMP #80
LDA #$19
BCS :CENTURY
LDA #$20
:CENTURY JSR PRHEX ; Century
PLA
LSR A
JSR PRDEC ; Year
JSR PRSPACE
INY
INY
LDA (FSPTR1),Y
JSR PRDEC ; Hour
LDA #$3A
JSR OSWRCH
DEY
LDA (FSPTR1),Y ; Minute
PRDEC TAX
LDA #$99
SED
:PRDECLP CLC
ADC #$01
DEX
BPL :PRDECLP
CLD
JMP PRHEX
PRDECSLH JSR PRDEC
LDA #'/'
JMP OSWRCH
* Print object access string
PRACCESS LDX #$04 ; Offset to 'D' char
LDY #$00
LDA (FSPTR1),Y
CMP #$D0 ; CS=Directory
LDY #$1E
LDA (FSPTR1),Y ; Permission byte
LDY #$0C ; Char counter
EOR #$C0
* AND #$E3 ; Keep LLB---WR
AND #$C3 ; Keep LL----WR
BCC :PRACC1 ; Not a directory
AND #$FC ; Drop 'WR' bits
:PRACC1 STA FSACCBYTE
BCS :PRACC2 ; Jump to print 'D'
:PRACCLP LDA FSACCBYTE
AND ACCESSBITS,X ; Is bit set?
BEQ :PRACC3
:PRACC2 LDA ACCESSCHRS,X ; If so, print character
JSR OSWRCH
INY ; Inc. char counter
:PRACC3 DEX
BPL :PRACCLP ; Loop for all chars
JMP PRSPACES ; Pad
* LDX #$04 ; Offset to chars
* LDY #$1E
* LDA (FSPTR1),Y
* PHA
* LDY #$00 ; Chars printed
* LDA (FSPTR1),Y
* CMP #$D0
* JSR :PRACCCHR ; 'D'
* PLA
* CPY #$01 ; Has 'D' been printed?
* PHP
* PHA
* EOR #$C0
* CMP #$40
* JSR :PRACCCHR ; 'L'
* PLA
* PLP
* BCS :PRACCDONE ; Dir, skip 'WR'
* ROR A
* PHP
* ROR A
* JSR :PRACCCHR ; 'W'
* PLP
* JSR :PRACCCHR ; 'R'
*:PRACCDONE LDA #$20
*:PRACCLP JSR :PRSPACE
* CPY #$04
* BCC :PRACCLP
*:PRSKIP RTS
*:PRACCCHR DEX
* BCC :PRSKIP
* LDA ACCESSCHRS,X
*:PRSPACE INY
* JMP OSWRCH
ACCESSCHRS ASC 'RWBLD'
ACCESSBITS DB $01,$02,$20,$C0,$00
* Print object addresses
PRADDR LDX #3
PRADDRLP LDA (FSPTR1),Y
PRADDR0 JSR OUTHEX
DEY
DEX
BNE PRADDRLP
PRADDROK RTS
PRSPACE LDA #' '
PRCHAR JMP OSWRCH
* OSFSC $0C - RENAME function
* XY=>pathnames
*
FSCRENAME JSR PARSNAME ; Copy Arg1->MOSFILE
BEQ :SYNTAX ; No <oldname>
JSR PARSLPTR2 ; Copy Arg2->MOSFILE2
BEQ :SYNTAX ; No <newname>
>>> XF2MAIN,RENFILE
:SYNTAX BRK
DB $DC
ASC 'Syntax: RENAME <oldspec> <newspec>'
BRK
* ProDOS returns $40 (Bad filename) for bad renames.
* Not easy to seperate out, so leave as Bad filename error.
ACCRET
RENRET
COPYRET
DESTRET
CHDIRRET >>> ENTAUX
JMP CHKERROR
* Handle *COPY command
* LPTR=>parameters string
*
FSCCOPY JSR PARSLPTR ; Copy Arg1->MOSFILE
BEQ :SYNTAX ; No <source>
JSR PARSLPTR2 ; Copy Arg2->MOSFILE2
BEQ :SYNTAX ; No <dest>
>>> XF2MAIN,COPYFILE ; Do the heavy lifting
:SYNTAX BRK
DB $DC
ASC 'Syntax: COPY <*objspec*> <dest>'
BRK
* Handle *DIR/*CHDIR/*CD (directory change) command
* LPTR=>parameters string
*
FSCCHDIR JSR PARSLPTR ; Copy filename->MOSFILE
BEQ ERRCHDIR ; No <dir>
LDY #$00 ; Y=$00 - CHDIR
FSCCHDIR2 >>> XF2MAIN,SETPFX
ERRCHDIR BRK
DB $DC
ASC 'Syntax: DIR <dir>'
BRK
* Handle *DRIVE command, which is similar to CHDIR
* LPTR=>parameters string
*
FSCDRIVE JSR PARSLPTR ; Copy arg->MOSFILE
TAY ; Y<>$00 - DRIVE
BNE FSCCHDIR2 ; Pass on as CHDIR
:SYNTAX BRK
DB $DC
ASC 'Syntax: DRIVE <drv>'
BRK
* Handle *FREE command
* LPTR=>parameters string
* Syntax is FREE (<drv>)
*
FSCFREE JSR PARSLPTR ; Copy arg->MOSFILE
>>> XF2MAIN,DRVINFO
FREERET >>> ENTAUX
JSR CHKERROR
*
* Disk size is two-byte 512-byte block count
* Maximum disk size is $FFFF blocks = 1FFFF00 bytes = 33554176 bytes = 32M-512
:NOERR SEC
LDA AUXBLK+2 ; LSB of total blocks
SBC AUXBLK+0 ; LSB of blocks used
TAX ; X=b0-b7 of blocks free
LDA AUXBLK+3 ; MSB of total blocks
SBC AUXBLK+1 ; MSB of blocks used
TAY ; Y=b8-b15 of blocks free
LDA #$00 ; A=b16-b23 of blocks free
JSR :FREEDEC ; Print 'AAYYXX blocks aaayyyxxx bytes '
LDX #<:FREE
LDY #>:FREE
JSR OUTSTR ; Print 'free'<nl>
LDX AUXBLK+0 ; X=b0-b7 of blocks used
LDY AUXBLK+1 ; Y=b8-b15 of blocks used
LDA #$00 ; A=b16-b23 of blocks used
JSR :FREEDEC ; Print 'AAYYXX blocks aaayyyxxx bytes '
LDX #<:USED
LDY #>:USED
JMP OUTSTR ; Print 'used'<nl>
:FREEDEC STX FSNUM+1
STY FSNUM+2
STA FSNUM+3
* JSR PRHEX ; Blocks b16-b23 in hex
JSR PR2HEX ; Blocks b0-b15 in hex
LDX #<:BLOCKS
LDY #>:BLOCKS
JSR OUTSTR ; ' blocks '
STZ FSNUM+0 ; FSNUM=blocks*512
ASL FSNUM+1
ROL FSNUM+2
ROL FSNUM+3
LDX #FSNUM ; X=>number to print
LDY #8 ; Y=pad up to 8 digits
JSR PRINTDEC ; Print it in decimal
LDX #<:BYTES
LDY #>:BYTES
JMP OUTSTR ; ' bytes '
:BLOCKS ASC ' blocks '
DB 0
:BYTES ASC ' bytes '
DB 0
:FREE ASC 'free'
DB 13,0
:USED ASC 'used'
DB 13,0
* Handle *ACCESS command
* LPTR=>parameters string
*
FSCACCESS JSR PARSLPTR ; Copy filename->MOSFILE
BEQ :SYNTAX ; No filename
STZ FSACCBYTE ; Initialise access to ""
:ACCESSLP1 LDA (OSLPTR),Y ; Get access character
CMP #$0D
BEQ :ACCESSGO ; End of line, action it
INY
AND #$DF ; Upper case
LDX #$04 ; Check five chars 'DLBWR'
:ACCESSLP2 CMP ACCESSCHRS,X
BNE :ACCESSNXT
LDA ACCESSBITS,X ; Add this to access mask
ORA FSACCBYTE
STA FSACCBYTE
:ACCESSNXT DEX
BPL :ACCESSLP2
BMI :ACCESSLP1 ; Check next character
:ACCESSGO LDA FSACCBYTE
EOR #$C0 ; MOSFILE=filename, A=access mask
>>> XF2MAIN,SETPERM
:SYNTAX BRK
DB $DC
ASC 'Syntax: ACCESS <*objspec*> <L|W|R>'
BRK
* Handle *DESTROY command
* LPTR=>parameters string
*
FSCDESTROY
DESTROY JSR PARSLPTR ; Copy filename->MOSFILE
BEQ :SYNTAX ; No filename
>>> XF2MAIN,MULTIDEL
:SYNTAX BRK
DB $DC
ASC 'Syntax: DESTROY <*objspec*>'
BRK
* Handle *TITLE command
* LPTR=>parameters string
* Syntax: *TITLE (<drive>) <title>
*
FSCTITLE RTS
* Parse filename pointed to by XY
* Write filename to MOSFILE in main memory
* Returns length in A with EQ/NE set
PARSNAME JSR XYtoLPTR
PARSLPTR CLC ; Means parsing a filename
JSR GSINIT ; Init general string handling
LDX #$00 ; Length
:L1 JSR GSREAD ; Handle next char
BCS :DONE
>>> WRTMAIN
STA MOSFILE+1,X
>>> WRTAUX
INX
CPX #$40
BNE :L1 ; Name not too long
TXA ; $40=Bad filename
JMP MKERROR
:DONE >>> WRTMAIN
STX MOSFILE ; Length byte (Pascal)
>>> WRTAUX
TXA ; Return len in A
RTS
* Parse filename pointed to by (OSLPTR),Y
* Write filename to MOSFILE2 in main memory
* Returns length in A with EQ/NE set
PARSNAME2 JSR XYtoLPTR
PARSLPTR2 CLC ; Means parsing a filename
JSR GSINIT ; Init gen string handling
LDX #$00 ; Length
:L1 JSR GSREAD ; Handle next char
BCS :DONE
>>> WRTMAIN
STA MOSFILE2+1,X
>>> WRTAUX
INX
CPX #$40
BNE :L1 ; Name not too long
TXA ; $40=Bad filename
JMP MKERROR
:DONE >>> WRTMAIN
STX MOSFILE2 ; Length byte (Pascal)
>>> WRTAUX
TXA ; Return len in A
NOTERROR RTS
ERRNOTFND LDA #$46 ; File not found
* Check returned code for return code or error code
* A<$20 - return to user, A>$1F - generate error
*
CHKERROR CMP #$20
BCC NOTERROR
MKERROR
DO DEBUG
BIT $E0
BPL MKERROR1 ; *DEBUG*
PHA
LDX #15
MKERRLP LDA ERRMSG,X
STA $100,X
DEX
BPL MKERRLP
PLA
PHA
LSR A
LSR A
LSR A
LSR A
JSR ERRHEX
STA $108
PLA
JSR ERRHEX
STA $109
JMP $100
ERRHEX AND #15
CMP #10
BCC ERRHEX1
ADC #6
ERRHEX1 ADC #48
RTS
ERRMSG BRK
DB $FF
ASC 'ERR: $00'
BRK
FIN
* Translate ProDOS error code into BBC error
MKERROR1 CMP #$40
BCS MKERROR2
ORA #$30 ; <$40 -> $30-$3F
MKERROR2 SEC
SBC #$38
CMP #$28
BCC MKERROR3 ; $28-$30, $40-$5F
LDA #$27 ; Otherwise I/O error
MKERROR3 ASL A
TAX
LDA MKERROR4+1,X
PHA
LDA MKERROR4+0,X
PHA
PHP
RTI
MKERROR4 DW ERROR28,ERROR27,ERROR2A,ERROR2B,ERROR2C,ERROR27,ERROR2E,ERROR27
DW ERROR40,ERROR41,ERROR42,ERROR43,ERROR44,ERROR45,ERROR46,ERROR47
DW ERROR48,ERROR49,ERROR4A,ERROR4B,ERROR4C,ERROR4D,ERROR4E,ERROR4F
DW ERROR50,ERROR51,ERROR52,ERROR53,ERROR54,ERROR55,ERROR56,ERROR57
DW ERROR27,ERROR27,ERROR5A,ERROR27,ERROR27,ERROR27,ERROR5E,ERROR27
* $27 - I/O error (disk not formatted)
* $28 - No device con'd (drive not present) Drive not present
* $29 -(GSOS Driver is busy)
* $2A -(Not a drive specifier) DRIVE/FREE: Bad drive
* $2B - Disk write protected. Disk write protected
* $2C - Bad byte count - file too long File too long
* $2D -(GSOS bad block number) (Sector not found?)
* $2E - Disk switched Disk changed
* $2F - Device is offline (drive empty/absent)
* $40 - Invalid pathname syntax. Bad filename
* $41 -(Duplicate filename. split from $47) Is a directory
* $42 - File Control Block table full. Too many open
* $43 - Invalid reference number. Channel not open
* $44 - Path not found. (Dir not found) File not found
* $45 - Volume directory not found. Disk not found
* $46 - File not found. File not found
* $47 - Duplicate filename. (see also $41) File exists
* $48 - Overrun error. Disk full
* $49 - Volume directory full. Directory full
* $4A - Incompatible file format. Disk not recognised
* $4B - Unsupported storage_type. Not a directory
* $4C - End of file has been encountered. End of file
* $4D - Position out of range. Past end of file
* $4E - Access error. (see also $4F) RD/WR: Insufficient access
* $4F -(Access error. split from $4E) REN/DEL/SAV: Locked
* $50 - File already open. Can't - file open
* $51 - Directory count error. Broken directory
* $52 - Not a ProDOS disk. Disk not recognised
* $53 - Invalid parameter. Invalid parameter
* $54 -(Dir not empty when deleting, cf $4E) DEL: Directory not empty
* $55 - Volume Control Block table full. (Too many disks mounted)
* $56 - Bad buffer address.
* $57 - Duplicate volume.
* $58 - Bad volume bitmap/Not block device.
* $59 -(GSOS File level out of range)
* $5A - Bit map disk address is impossible. Sector not found
* $5B -(GSOS Bad ChangePath pathname)
* $5C -(GSOS Not executable file)
* $5D -(GSOS OS/FS not found)
* $5E -(Destination filename has wildcards) Wildcards
* $5F -(GSOS Too many applications)
* $60+ - (GSOS)
* AcornOS ProDOS
ERROR28 DW $D200
ASC 'Disk not present' ; $28 - No device detected/connected
ERROR2A DW $CD00
ASC 'Bad drive' ; $2A - Not a drive specifier
ERROR2B DW $C900
ASC 'Disk write protected' ; $2B - Disk write protected
ERROR2C DW $C600
ASC 'File too big' ; $2C - Too big to save
ERROR2E DW $C800
ASC 'Disk changed' ; $2E - Disk switched
ERROR40 DW $CC00
ASC 'Bad filename' ; $40 - Invalid pathname syntax
ERROR41 DW $C400
ASC 'Is a directory' ; $41 - Duplicate filename (split from $47)
ERROR42 DW $C000
ASC 'Too many open' ; $42 - File Control Block table full
ERROR43 DW $DE00
ASC 'Channel not open' ; $43 - Invalid reference number
ERROR44 ; $44 - Path not found
ERROR46 DW $D600
ASC 'File not found' ; $46 - File not found
ERROR45 DW $D600
ASC 'Disk not found' ; $45 - Volume directory not found
ERROR47 DW $C400
ASC 'File exists' ; $47 - Duplicate filename (see also $41)
ERROR48 DW $C600
ASC 'Disk full' ; $48 - Overrun error
ERROR49 DW $B300
ASC 'Directory full' ; $49 - Volume directory full
ERROR4A ; $4A - Incompatible file format
ERROR52 DW $C800
ASC 'Disk not recognised' ; $52 - Not a ProDOS disk
ERROR4B DW $BE00 ; $4B - Unsupported storage_type
ASC 'Not a directory'
ERROR4C DW $DF00
ASC 'End of file' ; $4C - End of file has been encountered
ERROR4D DW $C100
ASC 'Not open for update' ; $4D - Position out of range
ERROR4E DW $BD00
ASC 'Insufficient access' ; $4E - Access error (see also $4F)
ERROR4F DW $C300
ASC 'Entry locked' ; $4F - Access error (split from $4E)
ERROR50 DW $C200
ASC 'Can'
DB $27
ASC 't - file open' ; $50 - File is open
ERROR51 DW $A800
ASC 'Broken directory' ; $51 - Directory count error
ERROR53 DW $DC00
ASC 'Invalid parameter' ; $53 - Invalid parameter
ERROR54 DW $D400
ASC 'Directory not empty' ; $54 - Directory not empty (split from $4E)
ERROR55 DW $FF00
ASC 'ProDOS: VCB full' ; $55 - Volume Control Block table full
ERROR56 DW $FF00
ASC 'ProDOS: Bad addr' ; $56 - Bad buffer address
ERROR57 DW $FF00
ASC 'ProDOS: Dup volm' ; $57 - Duplicate volume
ERROR5A DW $FF00
ASC 'Sector not found' ; $5A - Bit map disk address is impossible
ERROR5E DW $FD00
ASC 'Wildcards' ; $5E - Can't use wildcards in dest filename
ERROR27 DW $FF00
ASC 'I/O error' ; $27 - I/O error
DB $00
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