mirror of
https://github.com/A2osX/A2osX.git
synced 2024-11-25 05:32:20 +00:00
224 lines
3.5 KiB
Plaintext
224 lines
3.5 KiB
Plaintext
NEW
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AUTO 3,1
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.LIST OFF
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*--------------------------------------
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PrintFYA sty PrintFYA.Next+1
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sta PrintFYA.Next+2
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pla
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sta PrintFYA.99+1
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pla
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sta PrintFYA.98+1
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lda $C011 RDLCBNK2
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sta PrintFYA.91+1
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lda $C012 RDLCRAM
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sta PrintFYA.90+1
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lda $C08A RROMBNK1, make sure $D000-$FFFF ROM selected
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lda $CFFF get access to $C800-$CFFF internal ROM
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PrintFYA.1 stz X.b0Flag
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stz X.DigitCount
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jsr PrintFYA.Next
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beq PrintFYA.90
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cmp #'%'
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bne .7
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.2 jsr PrintFYA.Next
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beq PrintFYA.90
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cmp #'0'
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bne .3
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ror X.b0Flag beq -> CS
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bra .2
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.3 bcc .4
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cmp #'9'+1
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bcs .4
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and #$0f
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sta X.DigitCount
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bra .2
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.4 ldx #PrintFYA.Tbl-PrintFYA.Esc-1
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.5 cmp PrintFYA.Esc,x
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beq .6
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dex
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bpl .5
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bra PrintFYA.1
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.6 txa
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asl
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tax
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jmp (PrintFYA.Tbl,x)
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.7 ora #$80
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jsr $FDED COUT
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bra PrintFYA.1
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PrintFYA.90 lda #$ff
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bpl PrintFYA.98 ROM was selected, nothing to do
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PrintFYA.91 lda #$ff
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bmi PrintFYA.92 RAM bank 2 was selected
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ldx #$8B RRAMWRAMBNK1
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.HS 2C bit abs
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PrintFYA.92 ldx #$83 RRAMWRAMBNK2
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lda $C000,x
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lda $C000,x
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PrintFYA.98 lda #$ff Self modified RTS HI
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pha
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PrintFYA.99 lda #$ff Self modified RTS LO
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pha
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rts
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*--------------------------------------
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PrintFYA.Next lda $ffff
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beq .8
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inc PrintFYA.Next+1
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bne .8
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inc PrintFYA.Next+2 Always !=0
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.8 rts
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*--------------------------------------
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PrintFYA.Esc .AS "dDhHS"
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PrintFYA.Tbl .DA PrintFYA.D
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.DA PrintFYA.DD
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.DA PrintFYA.H
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.DA PrintFYA.HH
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.DA PrintFYA.S
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*--------------------------------------
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PrintFYA.D ldx #0
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.HS D0 bne
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PrintFYA.DD plx
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pla
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sta X.HexBuffer
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stx X.HexBuffer+1
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stz X.BCDBuffer
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stz X.BCDBuffer+1
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stz X.BCDBuffer+2
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ldx #16 let's roll 16 bits
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sed
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.2 asl X.HexBuffer
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rol X.HexBuffer+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 X.BCDBuffer,y
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adc X.BCDBuffer,y
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sta X.BCDBuffer,y
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php
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iny
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cpy #3 Last byte of X.BCDBufferBUF?
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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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ldx #0
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ldy #5
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.4 lda X.BCDBuffer,x
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pha
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and #$0F
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ora #$B0
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sta X.DigitBuffer,y
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dey
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pla
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lsr
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lsr
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lsr
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lsr
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ora #$B0
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sta X.DigitBuffer,y
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inx
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dey
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bpl .4
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lda X.DigitCount
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beq .5
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lda #6
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sec
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sbc X.DigitCount
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.5 tay
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.6 lda X.DigitBuffer,y
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cmp #"0"
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beq .7
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sec
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ror X.b0Flag
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bra .8
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.7 cpy #5
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beq .8
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lda #" "
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bit X.b0Flag
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bpl .81
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lda #"0"
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.8 phy
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jsr $FDED COUT
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ply
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.81 iny
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cpy #6
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bne .6
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.9 jmp PrintFYA.1
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*--------------------------------------
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PrintFYA.HH pla
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jsr $FDDA PRBYTE
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PrintFYA.H pla
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jsr $FDDA PRBYTE
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jmp PrintFYA.1
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*--------------------------------------
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PrintFYA.S pla
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sta .1+2
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sta .2+2
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pla
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sta .1+1
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sta .2+1
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.1 lda $ffff
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beq .9
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tax
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ldy #1
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.2 lda $ffff,y
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ora #$80
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jsr $FDED COUT
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iny
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dex
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bne .2
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.9 jmp PrintFYA.1
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*--------------------------------------
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X.HexBuffer .BS 2
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X.BCDBuffer .BS 3
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X.b0Flag .BS 1
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X.DigitCount .BS 1
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X.DigitBuffer .BS 6
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*--------------------------------------
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MAN
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SAVE usr/src/shared/x.printf.s
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