mirror of
https://github.com/A2osX/A2osX.git
synced 2024-11-25 20:33:13 +00:00
322 lines
8.6 KiB
Plaintext
322 lines
8.6 KiB
Plaintext
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NEW
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AUTO 3,1
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*--------------------------------------
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* FOLLOWING USE "BIT" TO SKIP OVER TWO BYTES,
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* SO CANNOT HAVE THE SECOND OF THE TWO =$CX.
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*--------------------------------
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MLI.C0 LDA #$00 CREATE
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.HS 2C
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MLI.C1 LDA #$01 DESTROY
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.HS 2C
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MLI.C2 LDA #$02 RENAME
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.HS 2C
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MLI.C3 LDA #$03 SET FILE INFO
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.HS 2C
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MLI.C4 LDA #$04 GET FILE INFO
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.HS 2C
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MLI.C5 LDA #$05 ONLINE
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.HS 2C
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MLI.C6 LDA #$06 SET PREFIX
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.HS 2C
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MLI.C7 LDA #$07 GET PREFIX
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.HS 2C
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MLI.C8 LDA #$08 OPEN
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.HS 2C
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MLI.C9 LDA #$09 NEWLINE
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.HS 2C
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MLI.CA LDA #$0A READ
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.HS 2C
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MLI.CB LDA #$0B WRITE
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.HS 2C
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MLI.CC LDA #$0C CLOSE
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.HS 2C
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MLI.CD LDA #$0D FLUSH
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.HS 2C
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MLI.CE LDA #$0E SET MARK
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.HS 2C
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MLI.CF LDA #$0F GET MARK
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.HS 2C
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MLI.D0 LDA #$D0 SET EOF
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.HS 2C
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MLI.D1 LDA #$D1 GET EOF
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ORA #$C0 MAKE INTO MLI CALL CODE
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JMP MLI.CALLER
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*--------------------------------
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GET.FILE.INFO
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LDA #10
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STA GET.SET.PARMS
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BNE MLI.C4 GET FILE INFO
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*--------------------------------
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SET.FILE.INFO
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LDA #7
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STA GET.SET.PARMS
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BNE MLI.C3 SET FILE INFO
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*--------------------------------
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BYE
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JSR CLOSE.ALL.FILES
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JSR CLOSE.EXEC.FILE
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JSR GP.MLI
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.DA #$65,READ.WRITE.PARMS
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*--------------------------------
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OPEN.A.FILE
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PHA
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LDA FBITS
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AND #$04
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BEQ .1
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LDX VAL.T
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.1 PLA
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OPEN.DIRECTORY
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CPX GET.SET.PARMS+4
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BNE TYPERR
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AND GET.SET.PARMS+3
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BEQ .3
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LDA ALLOCATED.BUFFER.PAGE
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STA OPEN.PARMS+4
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LDA #$0F
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STA LEVEL
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JSR MLI.C8 OPEN
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BCS .1
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LDA OPEN.PARMS+5
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STA READ.WRITE.PARMS+1
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STA CLOSE.FLUSH.PARMS+1
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STA MISC.PARMS+1
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.1 RTS
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*--------------------------------
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.3 LDA #$0A "FILE LOCKED"
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SEC
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RTS
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*--------------------------------
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VERIFY
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LDA #$06 "PATH NOT FOUND"
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RTS ALREADY .CS. IF ERROR
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*--------------------------------
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TYPERR LDA #$0D
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SEC
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RTS
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*--------------------------------
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* OPEN -- ONLY USED BY SCASM FOR OPENING
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* .TF AND "TEXT" FILES
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* THE FILES MAY BE TXT OR BIN FILE TYPE
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*--------------------------------
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OPEN
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PHP
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JSR GET.REFNUM.OF.OPEN.FILE
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BCC .9 ...ALREADY OPEN, ERROR
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PLP ...GET SAVED STATUS
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BCC .3 ...FILE ALREADY EXISTS
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*---MAKE A NEW FILE--------------
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LDA FBITS WAS T SPECIFIED?
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AND #$04
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BEQ .1 ...NO
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LDA VAL.T WHAT WAS SPEC?
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BCS .2 ...always, use spec'd type
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.1 LDA #$06 ...new file, type not spec'd, T=BIN
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BIT PASS $FF if command level, 0 or 1 if assembling
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BPL .4 ...assembling, make BIN file
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LDA #$04 ...command, make TXT file
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.4 STA VAL.T
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.2 STA GET.SET.PARMS+4
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LDA #$C3 FULL ACCESS PRIVILEGES
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STA GET.SET.PARMS+3
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LDA #0 RECORD LENGTH = 0000
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STA CREATE.PARMS+5
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STA CREATE.PARMS+6
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STA GET.SET.PARMS+5
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STA GET.SET.PARMS+6
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JSR MAKE.A.FILE CREATE THE FILE
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BCS .8 ...ERROR
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*---NOW THE FILE EXISTS----------
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*---OPEN THE FILE----------------
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.3 JSR ALLOCATE.LOWER.BUFFER
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STA OPEN.PARMS+4 STARTING PAGE OF BUFFER
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LDA #$07 LEVEL #
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STA LEVEL
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JSR MLI.C8 OPEN
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BCS .8 ...ERROR
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*---SAVE NAME, ETC OF OPEN FILE--
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LDA OPEN.PARMS+4 MARK THE BUFFER IN USE
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STA FILE.BUFFER.PNTRS,X
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LDA OPEN.PARMS+5 REFNUM
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STA FILE.REFNUMS,X
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JSR SAVE.FILENAME.IN.TABLE
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CLC
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.8 RTS
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*--------------------------------
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.9 PLP
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JMP ERR.FILE.BUSY
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*--------------------------------
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SAVE.FILENAME.IN.TABLE
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TXA
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ASL INDEX TIMES 32
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ASL
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ASL
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ASL
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ASL
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TAX
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*---FORM NAME LENGTH BYTE--------
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LDA PATHNAME.TWO.BUFFER
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STA OPEN.FILE.NAME.BUFFERS,X
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TAY SAVE ACTUAL LENGTH
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CMP #30 ONLY ROOM FOR 29 CHARS
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BCC .1 ...'TWILL FIT
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LDA #29 USE LAST 29 CHARS
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.1 STA FNLEN
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LDA VAL.L
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STA OPEN.FILE.NAME.BUFFERS+1,X
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LDA VAL.L+1
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STA OPEN.FILE.NAME.BUFFERS+2,X
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.2 INX
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LDA PATHNAME.TWO.BUFFER,Y
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STA OPEN.FILE.NAME.BUFFERS+2,X
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DEY
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DEC FNLEN
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BNE .2
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CLC
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RTS
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*--------------------------------
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* SEARCH OPEN FILE NAME TABLE
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* RETURN .CS., A=ERRCOD IF NO PATHNAME
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* OR IF NOT IN TABLE
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* RETURN .CC., A=REFNUM IF FOUND IN TABLE
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*--------------------------------
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GET.REFNUM.OF.OPEN.FILE
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LDA FBITS WAS PATHNAME GIVEN?
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LSR
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BCS .1 ...YES
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JMP ERR.SYNTAX ...NO, "SYNTAX ERROR"
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*---CHECK AMONG NON-EXEC FILES---
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.1 LDX #1 MAX # OF FILES IS 2
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STX EXEC.FILE.CLOSING.FLAG
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.2 LDA FILE.BUFFER.PNTRS,X SEE IF IN USE
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BEQ .3 NO
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JSR COMPARE.TO.FILE.NAME.BUFFER
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BCC .5 ...FOUND IT
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.3 DEX
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BPL .2
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*---CHECK EXEC FILE--------------
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BIT F.EXEC IS EXEC ON?
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BPL .4 ...NO, FILE NOT OPEN
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LDX #2 ...YES
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JSR COMPARE.TO.FILE.NAME.BUFFER
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BCS .4 ...NOT THIS ONE EITHER
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LDA #$FF
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STA EXEC.FILE.CLOSING.FLAG
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LDA EXEC.REFNUM
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RTS RETURN .CC.
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.4 LDA #$12 "FILE NOT OPEN"
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SEC
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RTS RETURN .CS.
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.5 LDA FILE.REFNUMS,X
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RTS RETURN .CC.
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*--------------------------------
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* COMPARE NAMES
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* RETURN .CC. IF SAME, ELSE .CS.
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*--------------------------------
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COMPARE.TO.FILE.NAME.BUFFER
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TXA
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PHA SAVE X-REGISTER
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ASL INDEX TIMES 32
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ASL
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ASL
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ASL
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ASL
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TAX
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LDA OPEN.FILE.NAME.BUFFERS,X
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CMP PATHNAME.TWO.BUFFER
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BNE .3 ...DIFFERENT LENGTHS
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TAY POINT TO END OF PATHNAME
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CMP #30 CHOP AT 29
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BCC .1
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LDA #29
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.1 STA FNLEN
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LDA OPEN.FILE.NAME.BUFFERS+1,X
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STA RECORD.LENGTH
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LDA OPEN.FILE.NAME.BUFFERS+2,X
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STA RECORD.LENGTH+1
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.2 INX
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LDA PATHNAME.TWO.BUFFER,Y
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CMP OPEN.FILE.NAME.BUFFERS+2,X
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BNE .3 NOT THE SAME NAME
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DEY
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DEC FNLEN
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BNE .2 MORE TO THE NAME
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CLC SIGNAL SAME NAMES
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.HS B0 "BCS" OPCODE, SKIPS OVER "SEC"
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.3 SEC SIGNAL DIFFERENT NAMES
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PLA RESTORE X-REG
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TAX
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RTS
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*--------------------------------
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CLOSE
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LDA FBITS
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LSR ANY PATHNAME GIVEN?
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BCC CLOSE.ALL.FILES ...NO
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JSR GET.REFNUM.OF.OPEN.FILE
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BCC CLOSE.ONE.FILE ...OPEN, SO CLOSE IT
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CLC ...NOT OPEN, SO FINISHED
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RTS
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*--------------------------------
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* CLOSE A FILE ... REFNUM IN A-REG
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* INDEX IN X-REG
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*--------------------------------
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CLOSE.ONE.FILE
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STA CLOSE.FLUSH.PARMS+1 REFNUM
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LDA #0
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STA LEVEL LEVEL 0
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JSR MLI.CC CLOSE
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BCS RTS2 ...ERROR
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LDA #0
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BIT EXEC.FILE.CLOSING.FLAG
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BPL .1
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STA F.EXEC
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STA EXEC.FILE.CLOSING.FLAG
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RTS
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.1 STA FILE.BUFFER.PNTRS,X
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LDA CLOSE.FLUSH.PARMS+1
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EOR WRITE.REFNUM TEST .EQ., LEAVE CARRY CLEAR
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BNE RTS2 ...NOT SAME AS "WRITE" FILE
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*--------------------------------
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UNHOOK.WRITE
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BIT F.WRITE
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BPL RTS2
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LDA VDOSIO
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STA CSWL
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LDA VDOSIO+1
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STA CSWH
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LDA #0
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STA F.WRITE
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RTS2 RTS
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*--------------------------------
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CLOSE.ALL.FILES
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LDX #1 MAX FILES IS 2
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.1 LDA FILE.BUFFER.PNTRS,X
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BEQ .2 NOT IN USE
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LDA FILE.REFNUMS,X
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JSR CLOSE.ONE.FILE
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BCS RTS2
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.2 DEX
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BPL .1
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INX X=0
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STX CLOSE.FLUSH.PARMS+1
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LDA #$07
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STA LEVEL
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JMP MLI.CC CLOSE
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*--------------------------------
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* ALLOCATE UPPER/LOWER BUFFER
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*--------------------------------
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ALLOCATE.UPPER.BUFFER
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LDX #1
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.HS 2C
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ALLOCATE.LOWER.BUFFER
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LDX #0
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.2 LDA BUFFER.BASES,X
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STA ALLOCATED.BUFFER.PAGE
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CLC
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RTS
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*--------------------------------------
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MAN
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SAVE usr/src/scmasm.30/sci.s.openclose
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LOAD usr/src/scmasm.30/scmasm.s
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ASM
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