Merged in GSINIT/GSTRNS (from JGH)
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182
auxmem.misc.s
182
auxmem.misc.s
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@ -2,7 +2,7 @@
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* (c) Bobbi 2021 GPLv3
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*
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* Misc functions and API entry block
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* TO DO: Write GSINIT/GSREAD
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* 02-Sep-2021 Written GSINIT/GSREAD
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* OSBYTE $80 - ADVAL
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@ -17,7 +17,9 @@ BYTE80 LDY #$00 ; Prepare return=&00xx
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ADVALWAIT JSR KBDREAD
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BCS ADVALWAIT
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TAX
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RTS
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BPL ADVALOK1 ; &00xx for normal keys
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INY ; &01xx for function/edit keys
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ADVALOK1 RTS
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ADVALNONE LDX #$00 ; Input, just return 0
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RTS
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ADVALBUF INX
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@ -63,7 +65,7 @@ BEEP PHA
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:L2 DEX ; 2cy BEEPX * 2cy
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BNE :L2 ; 3cy/2cy (BEEPX-1) * 3cy + 1 * 2cy
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*------------------------------------------------------
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* BEEPX*5-1cy
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* BEEPX*5-1cy
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LDA $C030 ; 4cy BEEPX*5+5
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DEY ; 2cy BEEPX*5+7
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BNE :L1 ; 3cy/2cy BEEPX*5+10
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@ -145,6 +147,152 @@ PRNIB CMP #$0A
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JMP OSWRCH
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* GSINIT - Initialise for GSTRANS string parsing
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************************************************
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* On entry,
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* (OSLPTR),Y=>start of string (spaces will be skipped)
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* CLC = filename style parsing
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* SEC = *KEY style parsing
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* On exit,
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* X = preserved
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* Y = prepared for future calls to GSREAD
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* EQ = end of line (nb: not "" null string)
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* NE = not end of line
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*
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* Very difficult to write this without it being a direct clone
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* from the BBC MOS. ;)
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*
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GSINTGO ROR GSFLAG ; CY initially into bit 7
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JSR SKIPSPC ; Skip any spaces
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INY ; Step past in case it's a quote
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CMP #$22 ; Is it a quote?
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BEQ GSINTGO1
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DEY ; Wasn't a quote, step back
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CLC ; Prepare CC=no leading quote
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GSINTGO1 ROR GSFLAG ; Rotate 'leading-quote' into flags
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CMP #$0D
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RTS ; Return EQ if end of line
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* GSFLAG set to:
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* bit7: leading quote found
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* bit6: CC=filename CS=*KEY
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* GSREAD - Read a character from a GSTRANS parsed string
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********************************************************
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* On entry,
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* (OSLPTR),Y=>current string pointer
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* On exit,
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* A = parsed character
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* X = preserved
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* CS = end of string (space or <cr> or ")
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* Y =updated to start of next word or end of line
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* EQ=end of line after this string
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* NE=not end of line, more words follow
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* CC = not end of string
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* Y =updated for future calls to GSREAD
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* VS=control character, <$20
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* VC=not control character >$1F
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*
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* No string present is checked for with:
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* JSR GSINIT:BEQ missingstring
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*
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* A null string is checked for with:
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* JSR GSINIT:JSR GSREAD:BCS nullstring
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*
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* A string is skipped with:
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* JSR GSINIT
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* loop
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* JSR GSREAD:BCC loop
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*
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* A string is copied with:
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* JSR GSINIT
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* LDX #0
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* loop
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* JSR GSREAD:BCS done
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* STA data,X
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* INX:BNE loop
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* done
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*
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GSRDGO LDA #$00 ; Prepare to clear accumulator
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GSREADLP STA GSCHAR ; Update accumulator
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LDA (OSLPTR),Y ; Get current character
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CMP #$0D ; End of line?
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BNE GSREAD2 ; No, check character
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BIT GSFLAG
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BPL GSREADEND ; We aren't waiting for a closing quote
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* ; End of line before closing quote
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ERRBADSTR BRK
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DB $FD
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ASC 'Bad string'
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BRK
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GSREAD2 CMP #' '
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BCC ERRBADSTR ; Embedded control char
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BNE GSREAD3 ; Not a space, process it
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BIT GSFLAG ; Can space terminate string?
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BMI GSREADCHAR ; We're waiting for a terminating quote
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* ; so return the space character
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BVC GSREADEND ; Space is a terminator, finish
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GSREAD3 CMP #$22 ; Is it a quote?
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BNE GSREADESC ; Not quote, check for escapes
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BIT GSFLAG ; Was there an opening quote?
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BPL GSREADCHAR ; Not waiting for a closing quote
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INY ; Waiting for quote, check next character
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LDA (OSLPTR),Y
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CMP #$22 ; Is it another quote?
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BEQ GSREADCHAR ; Quote-Quote, expand to single quote
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* End of string
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* Either closing quote, or a space seperator, or end of line
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GSREADEND JSR SKIPSPC ; Skip any spaces to next word
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SEC ; SEC=end of string
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RTS ; and (OSLPTR),Y=>next word or end of line
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* CS=end of string
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* EQ=end of line
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* NE=not end of line, more words follow
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GSREADESC CMP #$7C ; Is is '|' escape character
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BNE GSREADCHAR ; No, return as character
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INY ; Step to next character
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LDA (OSLPTR),Y
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CMP #$7C
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BEQ GSREADCHAR ; bar-bar expands to bar
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CMP #$22
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BEQ GSREADCHAR ; bar-quote expands to quote
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CMP #'!' ; Is it bar-pling?
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BNE GSREAD5 ; No, check for bar-letter
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INY ; Step past it
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LDA #$80 ; Set bit 7 in accumulator
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BNE GSREADLP ; Loop back to check next character(s)
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GSREAD5 CMP #'?' ; Check for '?'
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BCC ERRBADSTR ; <'?', bad character
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BEQ GSREADDEL ; bar-query -> DEL
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AND #$1F ; Convert bar-letter to control code
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BIT SETV ; SEV=control character
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BVS GSREADOK
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GSREADDEL LDA #$7F
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GSREADCHAR CLV ; CLV=not control character
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GSREADOK INY ; Step to next character
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ORA GSCHAR ; Add in any bit 7 from |! prefix
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CLC ; CLC=not end of string
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RTS
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* CC=not end of string
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* VS=control character
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* VC=not control character
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* Read a byte from sideways ROM
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RDROM LDX #$0F ; Returns X=current ROM, Y=0, A=byte
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LDY #$00 ; We haven't really got any ROMs
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LDA ($F6),Y ; so just read directly
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RTS
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EVENT LDA #<OSEVENM
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LDY #>OSEVENM
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JMP PRSTR
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OSEVENM ASC 'OSEVEN.'
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DB $00
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**********************************************************
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* Interrupt Handlers, MOS redirection vectors etc.
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**********************************************************
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@ -211,30 +359,6 @@ MSGBRK DB $0D
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ASC "ERROR: "
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DB $00
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RDROM LDA #<OSRDRMM
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LDY #>OSRDRMM
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JMP PRSTR
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OSRDRMM ASC 'OSRDDRM.'
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DB $00
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EVENT LDA #<OSEVENM
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LDY #>OSEVENM
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JMP PRSTR
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OSEVENM ASC 'OSEVEN.'
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DB $00
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GSINTGO LDA #<OSINITM
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LDY #>OSINITM
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JMP PRSTR
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OSINITM ASC 'GSINITM.'
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DB $00
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GSRDGO LDA #<OSREADM
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LDY #>OSREADM
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JMP PRSTR
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OSREADM ASC 'GSREAD.'
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DB $00
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* Default page 2 contents
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DEFVEC DW NULLRTS ; $200 USERV
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@ -268,9 +392,9 @@ MOSAPI EQU $FFB6
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* OPTIONAL ENTRIES
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* ----------------
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*OSSERV JMP NULLRTS ; FF95 OSSERV
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*OSSERV JMP SERVICE ; FF95 OSSERV
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*OSCOLD JMP NULLRTS ; FF98 OSCOLD
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*OSPRSTR JMP OUTSTR ; FF9B PRSTRG
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*OSPRSTR JMP OUTSTR ; FF9B OSPRSTR
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*OSFF9E JMP NULLRTS ; FF9E
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*OSSCANHEX JMP RDHEX ; FFA1 SCANHX
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*OSFFA4 JMP NULLRTS ; FFA4
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201
auxmem.oscli.s
201
auxmem.oscli.s
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@ -6,6 +6,7 @@
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* 22-Aug-2021 Uses dispatch table
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* Prepares parameters and hands on to API call
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* 24-Aug-2021 Combined *LOAD and *SAVE, full address parsing.
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* 02-Sep-2021 *LOAD/*SAVE now uses GSTRANS.
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* COMMAND TABLE
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@ -43,23 +44,6 @@ CMDTABLE ASC 'CAT' ; Must be first command so matches '*.'
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ASC 'CDIR'
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DB $88
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DW STARFILE-1 ; CDIR -> OSFILE 08, CBLK=>filename
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* filing-system-specific commands
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* Moved to HostFS
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* ASC 'CHDIR'
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* DB $C0
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* DW STARFSC-1 ; Should be a FSC 3 call, XY=>params
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* ASC 'CD'
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* DB $C0
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* DW STARFSC-1 ; Should be a FSC 3 call, XY=>params
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* ASC 'DIR'
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* DB $C0
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* DW STARFSC-1 ; Should be a FSC 3 call, XY=>params
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* ASC 'DRIVE'
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* DB $C1
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* DW STARFSC-1 ; Should be a FSC 3 call, XY=>params
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* FREE (<drive>)
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* ACCESS <file> <access>
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* TITLE (<drive>) <title>
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* osbyte commands
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ASC 'FX'
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DB $80
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@ -80,6 +64,9 @@ CMDTABLE ASC 'CAT' ; Must be first command so matches '*.'
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ASC 'KEY'
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DB $80
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DW STARKEY-1 ; KEY -> (LPTR)=>params
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ASC 'ECHO'
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DB $80
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DW ECHO-1 ; ECHO -> (LPTR)=>params
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* DUMP <file>
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* TYPE <file>
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* BUILD <file>
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@ -150,7 +137,7 @@ CLIMATCH3 JSR SKIPSPC ; (OSLPTR),Y=>parameters
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BEQ CLICALL ; If $80 don't convert LPTR
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JSR LPTRtoXY ; XY=>parameters
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CLICALL PLA ; A=command parameter
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CLIDONE RTS ; Call command routine
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RTS ; Call command routine
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CLISTEP INC OSTEXT+0,X ; Point to next table byte
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BNE CLISTEP2
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@ -170,11 +157,8 @@ CLILP1 LDA (OSLPTR),Y
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INY
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BNE CLILP1
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CLIEXIT1 RTS ; No terminating <cr>
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CLI2 LDY #0
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CLILP2 LDA (OSLPTR),Y
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INY
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CMP #' ' ; Skip leading spaces
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BEQ CLILP2
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CLI2 LDY #$FF
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CLILP2 JSR SKIPSPC1 ; Skip leading spaces
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CMP #'*' ; Skip leading stars
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BEQ CLILP2
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CMP #$0D
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@ -183,16 +167,15 @@ CLILP2 LDA (OSLPTR),Y
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BEQ CLIEXIT1 ; Comment
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CMP #'/'
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BEQ CLISLASH
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DEY
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JSR LPTRtoXY ; Add Y to LPTR
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JSR XYtoLPTR ; LPTR=>start of actual command
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LDX #<CMDTABLE ; XY=>command table
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LDY #>CMDTABLE
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JSR CLILOOKUP ; Look for command
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BNE CLIUNKNOWN ; No match
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RTS
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CLIDONE RTS
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CLISLASH JSR SKIPSPC
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CLISLASH JSR SKIPSPC1
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BEQ CLIDONE ; */<cr>
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LDA #$02
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BNE STARFSC2 ; FSC 2 = */filename
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@ -324,7 +307,7 @@ ERRBADADD1 JMP ERRBADADD
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SKIPCOMMA LDA (OSLPTR),Y
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CMP #$2C
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BNE SKIPSPC
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BNE SKIPSPC ; Drop through
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*
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* Skip spaces
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SKIPSPC1 INY ; Step past a character
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@ -334,8 +317,12 @@ SKIPSPC LDA (OSLPTR),Y
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CMP #$0D ; Return EQ=<cr>
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RTS
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* Skip a word parameter
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SKIPWORD RTS
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* Skip a string
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SKIPWORD CLC
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JSR GSINIT
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SKIPWORDLP JSR GSREAD
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BCC SKIPWORDLP
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RTS
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* Convert (LPTR),Y to XY
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LPTRtoXY CLC
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@ -422,45 +409,46 @@ STARQUIT >>> XF2MAIN,QUIT
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STARSAVE LDA #$00 ; Set A=0 - SAVE
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STARLOAD PHA ; Entered with A=$FF - LOAD
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JSR XYtoLPTR ; OSLPTR=>filename
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* replace with with GSREAD
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LDA (OSLPTR),Y
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CMP #34
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BEQ STARLDSVA
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LDA #32
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STARLDSVA STA OSTEMP
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STARLDSV0
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INY
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LDA (OSLPTR),Y
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CMP #13
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BEQ STARLDSV1
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CMP OSTEMP
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BNE STARLDSV0 ; Step past filename
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* ^^^^
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JSR SKIPSPC1 ; Skip following spaces
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BNE STARLDSV3 ; *load/save name addr
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JSR SKIPWORD ; Step past filename
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BNE STARLDSV3 ; filename followed by addr
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** replace with with GSREAD
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* LDA (OSLPTR),Y
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* CMP #34
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* BEQ STARLDSVA
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* LDA #32
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*STARLDSVA STA OSTEMP
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*STARLDSV0 INY
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* LDA (OSLPTR),Y
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* CMP #13
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* BEQ STARLDSV1
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* CMP OSTEMP
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* BNE STARLDSV0 ; Step past filename
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* JSR SKIPSPC1 ; Skip following spaces
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* BNE STARLDSV3 ; *load/save name addr
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** ^^^^
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*
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* filename followed by no address, must be *LOAD name
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STARLDSV1 LDA #$FF ; $FF=load to file's address
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STARLOAD2
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STA OSFILECB+6
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STARLOAD2 STA OSFILECB+6
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PLA
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BEQ ERRBADADD2 ; *save name <no addr>
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LDA #$7F ; Will become A=$FF
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JMP STARLDSVGO ; Do the load
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* load address exists
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STARLDSV3
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LDX #OSFILECB+2-$200 ; X=>load
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* At least one address specified
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STARLDSV3 LDX #OSFILECB+2-$200 ; X=>load
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JSR SCANHEX
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BNE STARSAVE3 ; another address
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BNE STARSAVE3 ; Another address
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LDA #$00 ; $00=load to supplied address
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BEQ STARLOAD2 ; Do the load
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BEQ STARLOAD2 ; Only one address, must be *LOAD
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* More than one address, must be *SAVE
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STARSAVE3
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PLA
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STARSAVE3 PLA
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BNE ERRBADADD2 ; Can't be *LOAD
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LDX #3
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STARSAVE4
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LDA OSFILECB+2,X ; Get load
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STARSAVE4 LDA OSFILECB+2,X ; Get load
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STA OSFILECB+6,X ; copy to exec
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STA OSFILECB+10,X ; and to start
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DEX
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@ -470,27 +458,24 @@ STARSAVE4
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PHP
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BNE STARSAVE5 ; Not start+length
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JSR SKIPSPC1 ; Step past '+' and spaces
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STARSAVE5
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LDX #OSFILECB+14-$200
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STARSAVE5 LDX #OSFILECB+14-$200
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JSR SCANHEX ; Get end or length
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PLP
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BNE STARSAVE7 ; Not +length
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LDX #0
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CLC
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STARSAVE6
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LDA OSFILECB+10,X ; end=start+length
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STARSAVE6 LDA OSFILECB+10,X ; end=start+length
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ADC OSFILECB+14,X
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STA OSFILECB+14,X
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INX
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TXA
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AND #3
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BNE STARSAVE6
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STARSAVE7
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* load =start
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* exec =start
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* start=start
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* end =end or start+length
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JSR SKIPSPC
|
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STARSAVE7 JSR SKIPSPC
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BEQ STARSAVE10 ; No more, do it
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LDX #OSFILECB+6-$200
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JSR SCANHEX ; Get exec
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||||
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@ -500,11 +485,9 @@ STARSAVE7
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BEQ STARSAVE10 ; No more, do it
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ERRBADADD2 JMP ERRBADADD ; Too many parameters
|
||||
|
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STARSAVE10
|
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LDA #$80 ; Will become $00 - SAVE
|
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STARLDSVGO
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LDX OSLPTR+0
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LDY OSLPTR+1
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STARSAVE10 LDA #$80 ; Will become $00 - SAVE
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||||
STARLDSVGO LDX OSLPTR+0
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||||
LDY OSLPTR+1 ; Continue through...
|
||||
*
|
||||
|
||||
* Commands passed to OSFILE
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||||
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@ -519,43 +502,67 @@ STARFILE EOR #$80
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|||
BNE STARDONE
|
||||
JMP ERRNOTFND
|
||||
|
||||
*STARCHDIR STX ZP1+0 ; TEMP
|
||||
* STY ZP1+1 ; TEMP
|
||||
* LDY #$00 ; TEMP
|
||||
* JMP STARDIR ; TEMP
|
||||
|
||||
STARBASIC
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||||
STARKEY
|
||||
STARDONE RTS
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||||
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||||
|
||||
* Code that calls this will need to be replaced with calls
|
||||
* to SKIPSPC and GSREAD
|
||||
*
|
||||
* Consume spaces in command line. Treat " as space!
|
||||
* Return C set if no space found, C clear otherwise
|
||||
* Command line pointer in (ZP1),Y
|
||||
EATSPC LDA (ZP1),Y ; Check first char is ...
|
||||
CMP #' ' ; ... space
|
||||
BEQ :START
|
||||
CMP #'"' ; Or quote mark
|
||||
BEQ :START
|
||||
BRA :NOTFND
|
||||
:START INY
|
||||
:L1 LDA (ZP1),Y ; Eat any additional ...
|
||||
CMP #' ' ; ... spaces
|
||||
BEQ :CONT
|
||||
CMP #'"' ; Or quote marks
|
||||
BNE :DONE
|
||||
:CONT INY
|
||||
BRA :L1
|
||||
:DONE CLC
|
||||
RTS
|
||||
:NOTFND SEC
|
||||
** Code that calls this will need to be replaced with calls
|
||||
** to SKIPSPC and GSREAD
|
||||
**
|
||||
** Consume spaces in command line. Treat " as space!
|
||||
** Return C set if no space found, C clear otherwise
|
||||
** Command line pointer in (ZP1),Y
|
||||
EATSPC
|
||||
* LDA (ZP1),Y ; Check first char is ...
|
||||
* CMP #' ' ; ... space
|
||||
* BEQ :START
|
||||
* CMP #'"' ; Or quote mark
|
||||
* BEQ :START
|
||||
* BRA :NOTFND
|
||||
*:START INY
|
||||
*:L1 LDA (ZP1),Y ; Eat any additional ...
|
||||
* CMP #' ' ; ... spaces
|
||||
* BEQ :CONT
|
||||
* CMP #'"' ; Or quote marks
|
||||
* BNE :DONE
|
||||
*:CONT INY
|
||||
* BRA :L1
|
||||
*:DONE CLC
|
||||
* RTS
|
||||
*:NOTFND SEC
|
||||
RTS
|
||||
|
||||
|
||||
|
||||
|
||||
** TEST CODE **
|
||||
ECHO PHY
|
||||
CLC
|
||||
JSR ECHO0
|
||||
PLY
|
||||
SEC
|
||||
ECHO0 JSR GSINIT
|
||||
PHP
|
||||
PLA
|
||||
JSR OUTHEX
|
||||
ECHOLP1 JSR GSREAD
|
||||
BCS ECHO3
|
||||
CMP #$20
|
||||
BCC ECHO2
|
||||
CMP #$7F
|
||||
BCS ECHO2
|
||||
JSR OSWRCH
|
||||
JMP ECHOLP1
|
||||
ECHO2 PHA
|
||||
LDA #'<'
|
||||
JSR OSWRCH
|
||||
PLA
|
||||
JSR OUTHEX
|
||||
LDA #'>'
|
||||
JSR OSWRCH
|
||||
JMP ECHOLP1
|
||||
ECHO3 PHP
|
||||
PLA
|
||||
JSR OUTHEX
|
||||
JMP OSNEWL
|
||||
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue