brooke/mandel-6502
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fixes

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This commit is contained in:
Brooke Vibber 2023-02-05 15:14:24 -08:00
parent e9f8aa1512
commit 839330edb3
1 changed files with 5 additions and 7 deletions
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12
mandel.s
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@ -772,13 +772,14 @@ loop_sx:
jsr mandelbrot jsr mandelbrot
jsr pset jsr pset
; check if we should update the counters ; check if we should update the counters
; ;
; count_pixels >= width? update! ; count_pixels >= width? update!
inc count_pixels inc count_pixels
lda count_pixels lda count_pixels
cmp #width cmp #width
bpl update_status bmi update_status
; count_frames >= 120? update! ; count_frames >= 120? update!
lda count_frames lda count_frames
@ -820,14 +821,13 @@ update_status:
; FR0 *= ms_per_frame ; FR0 *= ms_per_frame
ldx #.lobyte(ms_per_frame) ldx #.lobyte(ms_per_frame)
ldy #.hibyte(ms_per_frame) ldy #.hibyte(ms_per_frame)
jsr FLD1R
jsr FMUL jsr FMUL
; FR1 = total_ms ; FR0 += total_ms
ldx #total_ms ldx #total_ms
ldy #0 ldy #0
jsr FLD1R jsr FLD1R
; FR0 += FR1
jsr FADD jsr FADD
; total_ms = FR0 ; total_ms = FR0
@ -835,12 +835,10 @@ update_status:
ldy #0 ldy #0
jsr FST0R jsr FST0R
; FR1 = total_pixels ; FR0 /= total_pixels
ldx #total_pixels ldx #total_pixels
ldy #0 ldy #0
jsr FLD1R jsr FLD1R
; FR0 /= FR1
jsr FDIV jsr FDIV
; convert to ASCII in INBUFF ; convert to ASCII in INBUFF