42ad901ba4
Add 16x16 multiplier. Pretty simple. Address 0-1 is multipled by address 2-3 and the result is in address 4-7, all little endian of course.
32 lines
367 B
ArmAsm
32 lines
367 B
ArmAsm
.code
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LEDS = $efff
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MULTAL = $eff0
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MULTAH = $eff1
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MULTBL = $eff2
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MULTBH = $eff3
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MULTPLL = $eff4
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MULTPLH = $eff5
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MULTPHL = $eff6
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MULTPHH = $eff7
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main:
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lda #$7b
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sta MULTAL
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lda #$00
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sta MULTAH
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lda #$c8
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sta MULTBL
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lda #$01
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sta MULTBH
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lda MULTPLH
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sta LEDS
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wai
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bra main
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.segment "VECTORS"
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.addr main
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.addr main
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.addr main
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