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waterfall: no longer a ghost

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This commit is contained in:
Vince Weaver 2018-08-03 11:21:17 -04:00
parent c8014274af
commit e5634ca341
1 changed files with 83 additions and 27 deletions
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110
waterfall/waterfall.s
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@ -507,26 +507,53 @@ even_first_line:
lda YPOS ; 3
nop ; 2
outer_loop_even:
bit PAGE0 ; 4
; delay 29
asl DUMMY ; 6
asl DUMMY ; 6
asl DUMMY ; 6
asl DUMMY ; 6
lda YPOS ; 3
nop ; 2
bit PAGE1 ; 4
ldx #12 ; 65 cycles with PAGE0 ; 2
page1_loop_even: ; delay 61+bit
dex ; 2
bne page1_loop_even ; 2/3
; bit(4) -1(fallthrough) + loop*5 -1(fallthrouh)+4 extra = 61
; 5L = 55
lda YPOS ; 3
bit PAGE0 ; 4
ldx #11 ; 65 cycles with PAGE1 ; 2
;
page0_loop_even: ; delay 115+(7 loop)+4 (bit)+4(extra)
dex ; 2
bne page0_loop_even ; 2/3
; delay 21
asl DUMMY ; 6
asl DUMMY ; 6
asl DUMMY ; 6
lda YPOS ; 3
; line 2
bit PAGE0 ; 4
; delay 29
asl DUMMY ; 6
asl DUMMY ; 6
asl DUMMY ; 6
asl DUMMY ; 6
lda YPOS ; 3
nop ; 2
bit PAGE0 ; 4
lda YPOS ; 3
bit PAGE0 ; 4
; delay 21
asl DUMMY ; 6
asl DUMMY ; 6
nop ; 2
nop ; 2
dey ; 2
bne outer_loop_even ; 2/3
@ -549,7 +576,7 @@ page0_loop_even: ; delay 115+(7 loop)+4 (bit)+4(extra)
display_odd:
odd_first_line:
odd_first_two_lines:
ldy #95 ; 2
asl DUMMY ; 6
@ -577,22 +604,51 @@ odd_first_line:
outer_loop_odd:
bit PAGE0 ; 4
; delay 29
asl DUMMY ; 6
asl DUMMY ; 6
asl DUMMY ; 6
asl DUMMY ; 6
lda YPOS ; 3
nop ; 2
bit PAGE1 ; 4
ldx #12 ; 65 cycles with PAGE0 ; 2
page1_loop_odd: ; delay 61+bit
dex ; 2
bne page1_loop_odd ; 2/3
; bit(4) -1(fallthrough) + loop*5 -1(fallthrouh)+4 extra = 61
; 5L = 55
lda YPOS ; 3
bit PAGE0 ; 4
ldx #11 ; 65 cycles with PAGE1 ; 2
;
page0_loop_odd: ; delay 115+(7 loop)+4 (bit)+4(extra)
dex ; 2
bne page0_loop_odd ; 2/3
; delay 21
asl DUMMY ; 6
asl DUMMY ; 6
asl DUMMY ; 6
lda YPOS ; 3
; line 2
bit PAGE0 ; 4
; delay 29
asl DUMMY ; 6
asl DUMMY ; 6
asl DUMMY ; 6
asl DUMMY ; 6
lda YPOS ; 3
nop ; 2
bit PAGE0 ; 4
lda YPOS ; 3
bit PAGE0 ; 4
; delay 21
asl DUMMY ; 6
asl DUMMY ; 6
nop ; 2
nop ; 2
dey ; 2
bne outer_loop_odd ; 2/3