mirror of https://github.com/rkujawa/rk65c02.git
22 lines
436 B
ArmAsm
22 lines
436 B
ArmAsm
; 16-bit addition simple example by FMan/Tropyx
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; modified by rkujawa
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.org 0xC000
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.set num1lo, 0x62
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.set num1hi, 0x63
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.set num2lo, 0x64
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.set num2hi, 0x65
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.set reslo, 0x66
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.set reshi, 0x67
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; adds numbers 1 and 2, writes result to separate location
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add: clc ; clear carry
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lda num1lo
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adc num2lo
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sta reslo ; store sum of LSBs
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lda num1hi
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adc num2hi ; add the MSBs using carry from
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sta reshi ; the previous calculation
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stp
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