mirror of https://github.com/a2-4am/4cade.git
148 lines
1.9 KiB
ArmAsm
Executable File
148 lines
1.9 KiB
ArmAsm
Executable File
!cpu 6502
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!to "quick#061000",plain
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*=$1000
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zpword = $0 ;and $1
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zpstring= $2 ;and $3
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runningscore= $4 ;and $5
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startat = $6
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i = $7
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tmp = $8
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jsr quick
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tax
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lda #0
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jmp $ed24 ;hex to dec
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quick
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lda #<word
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sta zpword
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lda #>word
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sta zpword+1
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lda #<string
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sta zpstring
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lda #>string
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sta zpstring+1
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ldy word
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cpy string
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bne +
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- lda (zpword), y
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cmp (zpstring), y
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bne +
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dey
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bne -
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lda #100
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rts
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+ lda #0
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sta runningscore
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sta runningscore+1
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ldy #1
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sty startat
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- sty i
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lda (zpword), y
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jsr tolower
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sta tmp
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ldy startat
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-- lda (zpstring), y
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jsr tolower
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cmp tmp
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beq +
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cpy string
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iny
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bcc --
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lda #0
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rts
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+ ldx #80
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cpy startat
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beq +
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ldx #10
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cpy #1
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beq +
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dey
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lda (zpstring), y
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iny
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cmp ' '
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bne +
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ldx #90
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+ txa
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clc
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adc runningscore
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sta runningscore
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bcc +
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inc runningscore+1
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+ iny
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sty startat
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ldy i
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cpy word
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iny
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bcc -
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lda runningscore
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ldx runningscore+1
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ldy string
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jsr div
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sta tmp
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lda runningscore
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ldx runningscore+1
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ldy word
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jsr div
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clc
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adc tmp
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lsr
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ldx word+1
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cpx string+1
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bne +
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cmp #85
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bcs +
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adc #15
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+ rts
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tolower
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cmp #$41
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bcc +
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cmp #$5b
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bcs +
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ora #$20
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+ rts
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div
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sta num1
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stx num1+1
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sty num2
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lda #0
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sta rem
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sta rem+1
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ldx #16
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- asl num1
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rol num1+1
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rol rem
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rol rem+1
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lda rem
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sec
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sbc num2
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bcc +
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sta rem
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dec rem+1
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inc num1
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+ dex
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bne -
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lda num1
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rts
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rem !byte 0,0
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num1 !byte 0,0
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num2 !byte 0
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word !byte word_e-word_b
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word_b
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!text "HE"
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word_e
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string !byte string_e-string_b
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string_b
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!text "HELLO WORLD"
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string_e
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