Added *DUMP (hexdump) command.
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Bobbi Webber-Manners
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applecorn.po
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applecorn.po
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@ -205,7 +205,7 @@ BYTE00 BEQ BYTE00A ; OSBYTE 0,0 - generate error
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RTS ; %000x1xxx host type, 'A'pple
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BYTE00A BRK
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DB $F7
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HELLO ASC 'Applecorn MOS 2022-09-20'
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HELLO ASC 'Applecorn MOS 2022-09-22'
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DB $00 ; Unify MOS messages
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130
auxmem.oscli.s
130
auxmem.oscli.s
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@ -72,6 +72,9 @@ CMDTABLE ASC 'CAT' ; Must be first command so matches '*.'
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ASC 'TYPE'
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DB $80
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DW TYPE-1 ; TYPE -> (LPTR)=>params
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ASC 'DUMP'
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DB $80
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DW DUMP-1 ; DUMP -> (LPTR)=>params
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ASC 'SPOOL'
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DB $80
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DW SPOOL-1 ; EXEC -> (LPTR)=>params
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@ -538,8 +541,10 @@ TYPE JSR LPTRtoXY
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TAY ; File handle in Y
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:L1 JSR BGETHND ; Read a byte
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BCS :CLOSE ; EOF
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CMP #$0A ; Don't print LF
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BEQ :S1
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JSR OSASCI ; Print the character
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LDA ESCFLAG
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:S1 LDA ESCFLAG
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BMI :ESC
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BRA :L1
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:CLOSE LDA #$00
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@ -561,6 +566,129 @@ TYPE JSR LPTRtoXY
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BRK
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* Handle *DUMP command
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* LPTR=>parameters string
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*
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DUMP JSR LPTRtoXY
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PHX
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PHY
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JSR XYtoLPTR
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JSR PARSLPTR ; Just for error handling
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BEQ :SYNTAX ; No filename
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PLY
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PLX
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LDA #$40 ; Open for input
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JSR FINDHND ; Try to open file
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CMP #$00 ; Was file opened?
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BEQ :NOTFOUND
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TAY ; File handle in Y
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STZ DUMPOFF
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STZ DUMPOFF+1
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:L1 JSR BGETHND ; Read a byte
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BCS :CLOSE ; EOF
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PHA
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LDA DUMPOFF+0
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AND #$07
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BNE :INC
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LDA DUMPOFF+1 ; Print file offset
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JSR PRHEXBYTE
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LDA DUMPOFF+0
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JSR PRHEXBYTE
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LDA #' '
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JSR OSASCI
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LDX #$07
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LDA #' ' ; Clear ASCII buffer
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:L2 STA DUMPASCI,X
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DEX
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BNE :L2
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:INC INC DUMPOFF+0 ; Increment file offset
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BNE :S1
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INC DUMPOFF+1
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:S1 PLA
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STA DUMPASCI,X
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JSR PRHEXBYTE
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INX
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LDA #' '
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JSR OSASCI
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CPX #$08 ; If EOL ..
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BNE :S2
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JSR PRCHARS ; Print ASCII representation
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:S2 LDA ESCFLAG
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BMI :ESC
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BRA :L1
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:CLOSE JSR PRCHARS ; Print ASCII representation
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LDA #$00
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JSR FINDHND ; Close file
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:DONE RTS
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:SYNTAX BRK
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DB $DC
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ASC 'Syntax: DUMP <*objspec*>'
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BRK
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:NOTFOUND BRK
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DB $D6
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ASC 'Not found'
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BRK
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:ESC LDA #$00 ; Close file
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JSR FINDHND
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BRK
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DB $11
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ASC 'Escape'
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BRK
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DUMPOFF DW $0000
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DUMPASCI DS 8
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* Print byte in A in hex format
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PRHEXBYTE PHA
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LSR A
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LSR A
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LSR A
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LSR A
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JSR PRHEXNIB
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PLA
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JSR PRHEXNIB
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RTS
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* Print nibble in A in hex format
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PRHEXNIB AND #$0F
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CMP #10
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BPL :LETTER
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CLC
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ADC #'0'
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BRA :PRINT
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:LETTER CLC
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ADC #'A'-10
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:PRINT JSR OSASCI
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RTS
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* Print ASCII char buffer
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* with non-printing chars shown as '.'
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PRCHARS CPX #$00
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BEQ :DONE
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CPX #$08 ; Pad final line
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BEQ :S0
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LDA #' '
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JSR OSASCI
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JSR OSASCI
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JSR OSASCI
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INX
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BRA PRCHARS
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:S0 LDX #$00
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:L2 LDA DUMPASCI,X
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CMP #$20
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BMI :NOTPRINT
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CMP #$7F
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BPL :NOTPRINT
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JSR OSASCI
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:S1 INX
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CPX #$08
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BNE :L2
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JSR OSNEWL
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LDX #$00
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:DONE RTS
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:NOTPRINT LDA #'.'
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JSR OSASCI
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BRA :S1
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* Handle *SPOOL command
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* LPTR=>parameters string
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*
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