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This commit is contained in:
Brooke Vibber 2023-01-22 12:47:24 -08:00
parent 57975b7158
commit 8af3721308
1 changed files with 9 additions and 3 deletions
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12
mandel.s
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@ -436,11 +436,16 @@ keep_going:
.macro quick_exit arg
.local keep_going
.local keep_going2
lda arg + 1
cmp #(4 << 4)
bmi keep_going
rts
keep_going:
cmp #(256 - (4 << 4))
bpl keep_going2
rts
keep_going2:
.endmacro
; 4.12: (-8 .. +7.9)
@ -452,18 +457,19 @@ keep_going:
; zy = zx_zy + zx_zy + cy
add16 zy, zx_zy, zx_zy
add16 zy, zy, cy
quick_exit zy
; zx_2 = zx * zx
imul16_round zx_2, zx, zx, 4
quick_exit dist
quick_exit zx_2
; zy_2 = zy * zy
imul16_round zy_2, zy, zy, 4
quick_exit dist
quick_exit zy_2
; zx_zy = zx * zy
imul16_round zx_zy, zx, zy, 4
quick_exit dist
quick_exit zx_zy
; dist = zx_2 + zy_2
add16 dist, zx_2, zy_2