From: Tony Nixon
; ------------------------------------------ ; SUBROUTINE - 24 BIT DIVISION ; numerator: nratorH nratorM nratorL ; denominator: denomH denomM denomL ; ; result: nratorH nratorM nratorL ; remainder: remainH remainM remainL ; ; 54 instructions about 974 cycles divizn mov W, #24 mov BCount, W mov W, nratorH mov shiftH, W mov W, nratorM mov shiftM, W mov W, nratorL mov shiftL, W clr nratorH clr nratorM clr nratorL ; clr remainH clr remainM clr remainL dloop clrb C rl shiftL rl shiftM rl shiftH rl remainL rl remainM rl remainH mov W, denomH mov W, remainH-w sb Z jmp nochk ; mov W, denomM mov W, remainM-w sb Z jmp nochk ; mov W, denomL mov W, remainL-w nochk sb C jmp nogo ; mov W, denomL sub remainL, W sb C dec remainM mov W, remainM xor W, #$ff snb Z dec remainH mov W, denomM sub remainM, W sb C dec remainH mov W, denomH sub remainH, W setb C nogo rl nratorL rl nratorM rl nratorH decsz BCount jmp dloop ; ret
file: /Techref/scenix/lib/math/div/24by24tn_sx.htm, 1KB, , updated: 2004/6/10 14:40, local time: 2024/8/16 17:26,
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