mirror of
https://github.com/rkujawa/rk65c02.git
synced 2024-06-08 06:29:30 +00:00
22 lines
436 B
ArmAsm
22 lines
436 B
ArmAsm
; 16-bit addition simple example by FMan/Tropyx
|
|
; modified by rkujawa
|
|
|
|
.org 0xC000
|
|
.set num1lo, 0x62
|
|
.set num1hi, 0x63
|
|
.set num2lo, 0x64
|
|
.set num2hi, 0x65
|
|
.set reslo, 0x66
|
|
.set reshi, 0x67
|
|
|
|
; adds numbers 1 and 2, writes result to separate location
|
|
|
|
add: clc ; clear carry
|
|
lda num1lo
|
|
adc num2lo
|
|
sta reslo ; store sum of LSBs
|
|
lda num1hi
|
|
adc num2hi ; add the MSBs using carry from
|
|
sta reshi ; the previous calculation
|
|
stp
|