mirror of https://github.com/A2osX/A2osX.git
144 lines
1.9 KiB
Plaintext
144 lines
1.9 KiB
Plaintext
PR#3
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PREFIX /A2OSX.BUILD
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NEW
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INC 1
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AUTO 6
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.LIST OFF
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.OP 65C02
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*--------------------------------------
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PrintPStrAX >STAX TmpPtr1
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lda (TmpPtr1)
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tax
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beq .9
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ldy #1
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.1 lda (TmpPtr1),y
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ora #$80
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jsr COUT
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iny
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dex
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bne .1
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.9 rts
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*--------------------------------------
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PrintCStrAX >STAX TmpPtr1
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pla
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sta TmpPtr2
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pla
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sta TmpPtr2+1
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ldy #0
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.1 lda (TmpPtr1),y
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beq .9
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cmp #'%'
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bne .4
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iny
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lda (TmpPtr1),y
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beq .9
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cmp #'d'
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bne .2
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pla
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jsr PrintADec
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bra .8
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.2 cmp #'D'
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bne .3
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pla
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plx
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jsr PrintAXDec
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bra .8
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.3 cmp #'h'
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bne .4
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pla
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jsr PRBYTE
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.4 cmp #'\'
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bne .7
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iny
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lda (TmpPtr1),y
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beq .9
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cmp #'n'
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bne .9
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lda #$0D
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.7 ora #$80
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jsr COUT
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.8 iny
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bne .1
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.9 lda TmpPtr2+1
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pha
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lda TmpPtr2
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pha
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rts
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*--------------------------------------
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PrintADec ldx #0
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PrintAXDec >STAX HEX
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PrintDec stz BCD
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stz BCD+1
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stz BCD+2
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phy
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ldx #16 let's roll 16 bits
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sed
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.2 asl HEX
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rol HEX+1
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php cpy will disturb carry while BCD adc
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ldy #0
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.3 plp
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lda BCD,y
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adc BCD,y
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sta BCD,y
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php
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iny
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cpy #3 Last byte of BCDBUF?
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bne .3
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plp
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dex
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bne .2
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cld
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stz bFlag
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ldx #2
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.4 lda BCD,x
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lsr
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lsr
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lsr
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lsr
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bne .5
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bit bFlag
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bpl .6
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.5 sec
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ror bFlag
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ora #$B0
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jsr COUT
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.6 lda BCD,x
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and #$0F
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bne .7
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bit bFlag
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bpl .8
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.7 sec
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ror bFlag
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ora #$B0
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jsr COUT
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.8 dex
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bpl .4
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bit bFlag
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bmi .9
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lda #$B0
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jsr COUT
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.9 ply
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rts
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*--------------------------------------
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MAN
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SAVE A2OSX.S.TOOLS
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LOAD A2OSX.S
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ASM
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