F_OPEN, F_CLOSE are working now.
This commit is contained in:
Bobbi Webber-Manners
parent
d4b4472cbb
commit
596118dbac
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@ -10,6 +10,9 @@ STCKTOP EQU 06FFFH ; Top of Z80 stack (below IOBUFs)
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SOFTCARD EQU 0E400H ; Softcard in slot 4 ($C400)
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OFFSET EQU 01000H ; Offset to add to Z80 addr to get 6502
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; address. Correct for Z80 addr <= 0AFFFH
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; 6502 zero page, in Z80 address space
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CMD EQU 0F006H ; 6502 $06
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AREG EQU 0F007H ; 6502 $07
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@ -61,16 +64,17 @@ USERNUM DEFB 00H ; User number
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; End of private, implementation dependent space
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ORG 0060H ; Standard addr of 32 byte FCB
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FCBDRV DEFB 00H ; FCB Drive (0 current, 1 A:, 2 B: etc)
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FCBNAM DEFM 'FILENAMEEXT' ; FCB filename and extension
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FCBEX DEFB 00H ; FCB extent field
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FCBS1 DEFB 00H ; FCB S1 field
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FCBS2 DEFB 00H ; FCB S2 field
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FCBRC DEFB 00H ; FCB RC field
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FCBMAP DEFS 16 ; Map of blocks in file
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FCB1 ; File control block #1
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FCB1DRV DEFB 00H ; FCB Drive (0 current, 1 A:, 2 B: etc)
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FCB1NAM DEFM 'FILENAMEEXT' ; FCB filename and extension
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FCB1EX DEFB 00H ; FCB extent field
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FCB1S1 DEFB 00H ; FCB S1 field
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FCB1S2 DEFB 00H ; FCB S2 field
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FCB1RC DEFB 00H ; FCB RC field
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FCB1MAP DEFS 16 ; Map of blocks in file
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ORG 0080H ; Standard addr of 128 byte File Buffer
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FILEBUF DEFS 128
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FILEBUF DEFS 128 ; Command args go here too (Pascal string)
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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; The application program proper starts at 0100H
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@ -113,50 +117,77 @@ S1 LD C,0BH ; C_STAT call
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LD C,2 ; C_WRITE call
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CALL BDOS ; CP/M BDOS call
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; Create a file using ProDOS MLI
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; Creates 'A/TESTFILE.TMP'
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; Directory 'A' needs to exist already
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; Create an FCB
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LD A,1 ; A: drive
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LD (FCB1DRV),A ;
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LD A,'T' ; Filename
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LD (FCB1NAM),A ;
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LD A,'E' ; Filename
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LD (FCB1NAM+1),A ;
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LD A,'S' ; Filename
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LD (FCB1NAM+2),A ;
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LD A,'T' ; Filename
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LD (FCB1NAM+3),A ;
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LD A,'F' ; Filename
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LD (FCB1NAM+4),A ;
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LD A,'I' ; Filename
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LD (FCB1NAM+5),A ;
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LD A,'L' ; Filename
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LD (FCB1NAM+6),A ;
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LD A,'E' ; Filename
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LD (FCB1NAM+7),A ;
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LD A,'T' ; Extension
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LD (FCB1NAM+8),A ;
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LD A,'M' ; Extension
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LD (FCB1NAM+9),A ;
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LD A,'P' ; Extension
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LD (FCB1NAM+10),A ;
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LD DE,MSG1 ; Address of string
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; Create a file using ProDOS MLI
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; Creates 'A/TESTFILE.TMP'
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; Directory 'A' needs to exist already
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LD DE,CMSG ; Address of string
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LD C,09H ; C_WRITESTR call
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CALL BDOS ; CP/M BDOS call
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LD A,1 ; A: drive
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LD (FCBDRV),A ;
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LD A,'T' ; Filename
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LD (FCBNAM),A ;
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LD A,'E' ; Filename
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LD (FCBNAM+1),A ;
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LD A,'S' ; Filename
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LD (FCBNAM+2),A ;
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LD A,'T' ; Filename
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LD (FCBNAM+3),A ;
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LD A,'F' ; Filename
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LD (FCBNAM+4),A ;
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LD A,'I' ; Filename
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LD (FCBNAM+5),A ;
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LD A,'L' ; Filename
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LD (FCBNAM+6),A ;
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LD A,'E' ; Filename
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LD (FCBNAM+7),A ;
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LD A,'T' ; Extension
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LD (FCBNAM+8),A ;
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LD A,'M' ; Extension
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LD (FCBNAM+9),A ;
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LD A,'P' ; Extension
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LD (FCBNAM+10),A ;
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LD DE,0060H ; Default FCB address
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LD DE,FCB1 ; Default FCB address
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LD C,16H ; F_MAKE call
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CALL BDOS ; CP/M BDOS call
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CALL CHECKOK
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LD DE,MSG2 ; Address of string
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; Open the file just created
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LD DE,OMSG ; Address of string
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LD C,09H ; C_WRITESTR call
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CALL BDOS ; CP/M BDOS call
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LD DE,0060H ; Default FCB address
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LD DE,FCB1 ; Default FCB address
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LD C,0FH ; F_OPEN call
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CALL BDOS ; CP/M BDOS call
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CALL CHECKOK
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; Close the file
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LD DE,CLMSG ; Address of string
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LD C,09H ; C_WRITESTR call
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CALL BDOS ; CP/M BDOS call
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LD DE,FCB1 ; Default FCB address
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LD C,10H ; F_CLOSE call
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CALL BDOS ; CP/M BDOS call
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CALL CHECKOK
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; Delete the file
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LD DE,DMSG ; Address of string
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LD C,09H ; C_WRITESTR call
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CALL BDOS ; CP/M BDOS call
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LD DE,FCB1 ; Default FCB address
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LD C,13H ; F_DELETE call
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CALL BDOS ; CP/M BDOS call
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@ -177,7 +208,13 @@ CHECKOK LD A,(AREG) ; Look at the return code
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LD DE,FAILMSG1 ; Fail message
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LD C,09H ; C_WRITESTR call
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CALL BDOS ; CP/M BDOS call
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LD DE,HEXBUF ; Write hex value to console
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LD L,A ; Copy to HL for NUM2HEX
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LD H,0 ; ...
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LD DE,HEXBUF ; Generate hex string to HEXBUF
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CALL NUM2HEX ; ...
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LD A,0FFH ; 0FFH for error
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LD L,A ; Return code in L also
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LD DE,HEXBUF+2 ; Write hex value to console
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LD C,09H ; C_WRITESTR call
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CALL BDOS ; CP/M BDOS call
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LD DE,FAILMSG2 ; Fail message
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@ -193,11 +230,19 @@ WELCOME DEFB 13
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DEFM 'Zapple-II Test Stub...'
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DEFB 13, '$'
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MSG1 DEFB 13
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CMSG DEFB 13
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DEFM 'Creating A/TESTFILE.TMP'
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DEFB 13, '$'
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MSG2 DEFB 13
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OMSG DEFB 13
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DEFM 'Opening A/TESTFILE.TMP'
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DEFB 13, '$'
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CLMSG DEFB 13
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DEFM 'Closing A/TESTFILE.TMP'
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DEFB 13, '$'
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DMSG DEFB 13
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DEFM 'Deleting A/TESTFILE.TMP'
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DEFB 13, '$'
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@ -222,9 +267,9 @@ FAILMSG2 DEFM ')'
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; C=0CH S_BDOSVER Return version number
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; C=0DH DRV_ALLRESET Reset disks
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; C=0EH DRV_SET Select disk
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; C=0FH F_OPEN Open file (IN PROGRESS)
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; C=0FH F_OPEN Open file
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; C=10H F_CLOSE Close file (IN PROGRESS)
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; C=13H F_DELETE Delete file (IN PROGRESS)
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; C=13H F_DELETE Delete file
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; C=16H F_MAKE Create file (IN PROGRESS)
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; C=17H DRV_LOGVEC Return bitmap of logged-in drives
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; C=19H DRV_GET Return current drive
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@ -420,7 +465,6 @@ DSRET LD L,A ; Return code in L too
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F_OPEN CALL MAKEPATH ; Populate PATHLEN and PATH
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; Work out which IOBUF to allocate for this file
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; And set the pointer in the ProDOS parameter list
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LD A,(FRN1) ; See if IOBUF1 is free
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CP 0 ; ...
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JP Z,FOS1 ; IOBUF1 is free
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@ -433,9 +477,9 @@ F_OPEN CALL MAKEPATH ; Populate PATHLEN and PATH
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LD A,(FRN4) ; See if IOBUF4 is free
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CP 0 ; ...
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JP Z,FOS4 ; IOBUF4 is free
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LD A,0FFH ; Error too many files open
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LD L,A ; Copy to L
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RET ; Error return
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JP FOERR ; Error too many files open
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; Set the pointer in the ProDOS parameter list
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FOS1 LD HL,IOBUF1 ; Address of IOBUF1
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LD A,1 ; Buffer 1
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JP FOS5 ;
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@ -447,23 +491,27 @@ FOS3 LD HL,IOBUF3 ; Address of IOBUF3
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JP FOS5 ;
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FOS4 LD HL,IOBUF4 ; Address of IOBUF4
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LD A,4 ; Buffer 4
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FOS5 LD (FOMLII),HL ; Store in parameter list
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LD (FOIOB),A ; Record the buffer index for later
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FOS5 LD (FOIOB),A ; Record the buffer index in local var
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LD BC,OFFSET ; Add offset to convert to 6502 address
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ADD HL,BC ; ...
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LD (FOMLII),HL ; Store in parameter list
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;
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; TODO NOW THE CODE TO ACTUALLY INVOKE THE MLI CALL ON 6502
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;
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;
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; TODO HANDLE ERROR RETURN CODES FROM MLI
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;
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PUSH DE ; Preserve pointer to FCB
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LD HL,FOMLI ; Pass address of 6502 JSR instruction
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CALL PRODOS ; Invoke ProDOS MLI
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POP DE ; Restore pointer to FCB
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CP 0 ; See if there was an error
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JP NZ,FOERR ; Handle error
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; Store ProDOS FRN in S2 field of FCB
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LD A,(FOMLIN) ; Get ProDOS file reference number
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LD H,D ; Pointer to FCB ...
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LD L,E ; ... into HL
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LD BC,14 ; Offset to S2 field (reserved field)
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ADD HL,BC ; Compute address
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LD (HL),A ; Store file refence number is S2 field
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LD (HL),A ; Store file reference number is S2 field
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LD A,(FOIOB) ; Obtain IOBUF idx (1,2,3,4)
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CP 1 ; Is it 1? ...
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JP Z,FOS6 ; ... yes
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@ -484,35 +532,46 @@ FOS8 LD A,(FOMLIN) ;
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FOS9 LD A,(FOMLIN) ;
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LD (FRN4),A ;
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JP FOS10 ;
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FOS10
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;
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; TODO HANDLE RETURN CODE ON SUCCESS (0,1,2,3)
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;
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RET
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FOS10 LD A,0 ; Success
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LD L,A ; Copy to L
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RET ; Done
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FOERR LD A,0FFH ; Error return status
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LD L,A ; Copy to L
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RET ; Done (error)
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FOMLI DEFB 20H,00H,0BFH ; JSR $BF00 in 6502 code
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DEFB 0C8H ; ProDOS OPEN call
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DEFW FOMLIPL+1000H ; Pointer to parm list in 6502 addr space
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DEFW FOMLIPL+OFFSET ; Pointer to parm list in 6502 addr space
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DEFB 60H ; RTS in 6502 code
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FOMLIPL DEFB 3 ; ProDOS PL: Three parameters
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FOMLIP DEFW PATHLEN+1000H ; ProDOS PL: pointer to path in 6502 addr
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FOMLIP DEFW PATHLEN+OFFSET ; ProDOS PL: pointer to path in 6502 addr
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FOMLII DEFW 0000H ; ProDOS PL: pointer to IO buffer
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FOMLIN DEFB 0 ; ProDOS PL: File reference number
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FOIOB DEFB 0 ; Local variable to record IOBUF idx
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; Close file
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; DE is the address of the FCB describing the file to close
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; Returns error codes in BA and HL:
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; TODO WRITE THIS!!!!
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; Returns error codes in A and L:
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F_CLOSE
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; Steps:
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; 1) Get the file reference number from field S2 of FCB & fill in FCMLIN
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; 2) Hand off pointer to the JSR instruction to 6502 to run
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; 3) On return, check return code and set BA and HL accordingly
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LD H,D ; Pointer to FCB ...
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LD L,E ; ... into HL
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LD BC,14 ; Offset to S2 field (reserved field)
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ADD HL,BC ; Compute address
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LD A,(HL) ; Obtain file reference num from FCB S2
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LD HL,FCMLI ; Pass address of 6502 JSR instruction
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CALL PRODOS ; Invoke ProDOS MLI
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CP 0 ; See if there was an error
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JP NZ,FCERR ; Handle error
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LD L,A ; Return in L also
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RET
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FCERR LD A,0FFH ; 0FFH for error
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LD L,A ; Return code in L also
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RET
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FCMLI DEFB 20H,00H,0BFH ; JSR $BF00 in 6502 code
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DEFB 0CCH ; ProDOS CLOSE call
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DEFW FCMLIPL+1000H ; Pointer to parm list in 6502 addr space
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DEFW FCMLIPL+OFFSET ; Pointer to parm list in 6502 addr space
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DEFB 60H ; RTS in 6502 code
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FCMLIPL DEFB 1 ; ProDOS PB: One parameter
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FCMLIN DEFB 0 ; ProDOS PB: File reference number
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@ -522,32 +581,21 @@ FCMLIN DEFB 0 ; ProDOS PB: File reference number
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; Returns error codes in A and L:
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F_DELETE CALL MAKEPATH ; Populate PATHLEN and PATH
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LD HL,FDMLI ; Pass address of 6502 JSR instruction
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LD BC,1000H ; Add offset to convert Z80->6502 address
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ADD HL,BC ; ...
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LD (ADDR),HL ; Store it for 6502
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LD A,2 ; CMD=2 means ProDOS MLI call
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LD (CMD),A ; ...
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LD (SOFTCARD),A ; Do it!
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LD A,(AREG) ; Get return code from the MLI call
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CALL PRODOS ; Invoke ProDOS MLI
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CP 0 ; See if there was an error
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JP NZ,FDS1 ; Handle error
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LD A,0 ; Return 0 in A ...
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JP NZ,FDERR ; Handle error
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LD L,A ; ... and L too
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RET
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FDS1 LD L,A ; Copy to HL for NUM2HEX
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LD H,0 ; ...
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LD DE,HEXBUF ; Generate hex string to HEXBUF
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CALL NUM2HEX ; ...
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LD A,0FFH ; 0FFH for error
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FDERR LD A,0FFH ; 0FFH for error
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LD L,A ; Return code in L also
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RET
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FDMLI DEFB 20H,00H,0BFH ; JSR $BF00 in 6502 code
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DEFB 0C1H ; ProDOS DESTROY call
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DEFW FDMLIPL+1000H ; Pointer to parm list in 6502 addr space
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DEFW FDMLIPL+OFFSET ; Pointer to parm list in 6502 addr space
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DEFB 60H ; RTS in 6502 code
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FDMLIPL DEFB 1 ; ProDOS PL: Seven parameters
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FDMLIP DEFW PATHLEN+1000H ; ProDOS PL: Pointer to path in 6502 addr
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FDMLIP DEFW PATHLEN+OFFSET ; ProDOS PL: Pointer to path in 6502 addr
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; Create (and open) file
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; DE is the address of the FCB describing the file to create
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@ -555,33 +603,23 @@ FDMLIP DEFW PATHLEN+1000H ; ProDOS PL: Pointer to path in 6502 addr
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; 0 through 3 for success, 0FFH is file could not be created
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F_MAKE CALL MAKEPATH ; Populate PATHLEN and PATH
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LD HL,FMMLI ; Pass address of 6502 JSR instruction
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LD BC,1000H ; Add offset to convert Z80->6502 address
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ADD HL,BC ; ...
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LD (ADDR),HL ; Store it for 6502
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LD A,2 ; CMD=2 means ProDOS MLI call
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LD (CMD),A ; ...
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LD (SOFTCARD),A ; Do it!
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LD A,(AREG) ; Get return code from the MLI call
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CALL PRODOS ; Invoke ProDOS MLI
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CP 0 ; See if there was an error
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JP NZ,FMS1 ; Handle error
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JP NZ,FMERR ; Handle error
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;;;; CALL F_OPEN ; Open the file using same FCB (DE ptr)
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LD A,0 ;;; TEMP DEBUG - SHOULD CALL F_OPEN ABOVE ;;;
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LD L,A ; Return code in L also
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RET
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FMS1 LD L,A ; Copy to HL for NUM2HEX
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LD H,0 ; ...
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LD DE,HEXBUF ; Generate hex string to HEXBUF
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CALL NUM2HEX ; ...
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LD A,0FFH ; 0FFH for error
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FMERR LD A,0FFH ; 0FFH for error
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LD L,A ; Return code in L also
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RET
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FMMLI DEFB 20H,00H,0BFH ; JSR $BF00 in 6502 code
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DEFB 0C0H ; ProDOS CREATE call
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DEFW FMMLIPL+1000H ; Pointer to parm list in 6502 addr space
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DEFW FMMLIPL+OFFSET ; Pointer to parm list in 6502 addr space
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DEFB 60H ; RTS in 6502 code
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FMMLIPL DEFB 7 ; ProDOS PL: Seven parameters
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FMMLIP DEFW PATHLEN+1000H ; ProDOS PL: Pointer to path in 6502 addr
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FMMLIP DEFW PATHLEN+OFFSET ; ProDOS PL: Pointer to path in 6502 addr
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FMMLIA DEFB 0C3H ; ProDOS PL: Access (0C3H full access)
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FMMLIT DEFB 0 ; ProDOS PL: File type (0 means typeless)
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FMMLIAT DEFW 0000H ; ProDOS PL: Aux file type (always 0000H)
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@ -653,6 +691,19 @@ DRV_RESET LD A,(ROVEC) ; Do the LSB ...
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LD (ROVEC+1),A ;
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RET
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; Make a ProDOS MLI call
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; Address of 6502 JSR instruction in front of ProDOS parameter list is
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; passed in in register pair HL, in Z80 address space
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; Return code is passed back in A
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PRODOS LD BC,OFFSET ; Add offset to convert Z80->6502 address
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ADD HL,BC ; ...
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LD (ADDR),HL ; Store it for 6502
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LD A,2 ; CMD=2 means ProDOS MLI call
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LD (CMD),A ; ...
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LD (SOFTCARD),A ; Do it!
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LD A,(AREG) ; Get return code from the MLI call
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RET
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; Populate the PATH buffer (and PATHLEN) by copying from FCB
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; DE contains a pointer to the FCB
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; Be sure not to trash DE
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@ -712,9 +763,6 @@ N2H2 OR 0F0H
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ADC A,40H
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LD (DE),A
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INC DE
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LD A,'$' ; Terminate the hex string
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LD (DE),A ; ...
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INC DE
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RET
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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@ -733,7 +781,7 @@ FRN3 DEFB 0
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FRN4 DEFB 0
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; Buffer for printing hex numbers to console
|
||||
HEXBUF DEFB 0,0,0,0,13,'$'
|
||||
HEXBUF DEFB 0,0,0,0,'$'
|
||||
|
||||
; Four 1024 byte ProDOS I/O buffers
|
||||
; These must start on a page boundary
|
||||
|
|
|
|||
Binary file not shown.
BIN
zapple2.po
BIN
zapple2.po
Binary file not shown.
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Reference in New Issue