?? almul.s
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// 32-bit multiplication routine for fixed pt hardware./ Implements *= operator/ Credit to an unknown author who slipped it under the door..globl almul.globl csv, cretalmul: jsr r5,csv mov 4(r5),r4 mov 2(r4),r2 sxt r1 sub (r4),r1 mov 8.(r5),r0 sxt r3 sub 6.(r5),r3 mul r0,r1 mul r2,r3 add r1,r3 mul r2,r0 sub r3,r0 mov r0,(r4)+ mov r1,(r4) jmp cret?? 快捷鍵說明
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