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kfest: finally got bar code working

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This commit is contained in:
Vince Weaver 2018-07-20 16:45:42 -04:00
parent 0f13336ea8
commit 0a5d222f30
1 changed files with 137 additions and 10 deletions
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147
kfest2018/raster2.s
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@ -33,6 +33,7 @@ WAIT = $FCA8 ;; delay 1/2(26+27A+5A^2) us
sta DRAW_PAGE
sta CURRENT_OFFSET
sta OFFSET_GOVERNOR
lda #3
sta YPOS
; Clear Page0
@ -250,21 +251,22 @@ page1_loop: ; delay 115+(7 loop)+4 (bit)+4(extra)
; We have 4550 cycles in the vblank, use them wisely
;======================================================
; delay 1711 (4550 +1 from falltrough, -2 for loadup, -2661 scroll -3)
; - 147 - 27
; delay 1652 (4550 +1 from falltrough, -2 for loadup, -2661 scroll -3)
; - 147 - 83 -3
; Try X=33 Y=10 cycles=1711
; Try X=2 Y=103 cycles=1649 R2
; waste 2 cycles
; lda DRAW_PAGE ; 3
lda DRAW_PAGE ; 3
; lda DRAW_PAGE ; 3
; nop ; 2
; nop
ldy #10 ; 2
ldy #103 ; 2
loop5:
ldx #33 ; 2
ldx #2 ; 2
loop6:
dex ; 2
bne loop6 ; 2nt/3
@ -289,8 +291,36 @@ clear_fb_loop:
;==================
; Set Rasterbar
;==================
; 27 cycles
ldx YPOS ; 3
; 16 + 52 + 15 = 83
lda YPOS ; 3
and #$fc
lsr ; 2
; lsr ; 2
tax ; 2
lda YPOS ; 3
and #$3 ; 2
cmp #$0 ; 2
; zero_rasterbar = 42 (add 10)
; one_rasterbar = 46 (add 6)
; two_rasterbar = 50 (add 2)
; three_rasterbar = 52
beq zero_rasterbar
; 2
cmp #$1 ; 2
beq one_rasterbar
; 2
cmp #$2 ; 2
beq two_rasterbar
; 2
bne three_rasterbar
zero_rasterbar:
; 3
lda #$b1 ; 2
sta FRAMEBUFFER,X ; 4
lda #$f3 ; 2
@ -299,13 +329,110 @@ clear_fb_loop:
sta FRAMEBUFFER+2,X ; 4
lda #$03 ; 2
sta FRAMEBUFFER+3,X ; 4
lda #$00 ; 2
sta FRAMEBUFFER+4,X ; 4
lda #$00 ; 2
sta FRAMEBUFFER+5,X ; 4
nop
nop
nop
nop
nop
jmp done_draw_rasterbar ; 3
;===========
; 42
one_rasterbar:
; 4+3
lda #$30 ; 2
sta FRAMEBUFFER,X ; 4
lda #$b1 ; 2
sta FRAMEBUFFER+1,X ; 4
lda #$3f ; 2
sta FRAMEBUFFER+2,X ; 4
lda #$1b ; 2
sta FRAMEBUFFER+3,X ; 4
lda #$00 ; 2
sta FRAMEBUFFER+4,X ; 4
lda #$00 ; 2
sta FRAMEBUFFER+5,X ; 4
nop
nop
nop
jmp done_draw_rasterbar ; 3
;==========
; 46
two_rasterbar:
; 8+3
lda #$10 ; 2
sta FRAMEBUFFER,X ; 4
lda #$30 ; 2
sta FRAMEBUFFER+1,X ; 4
lda #$bb ; 2
sta FRAMEBUFFER+2,X ; 4
lda #$3f ; 2
sta FRAMEBUFFER+3,X ; 4
lda #$01 ; 2
sta FRAMEBUFFER+4,X ; 4
lda #$00 ; 2
sta FRAMEBUFFER+5,X ; 4
nop
jmp done_draw_rasterbar ; 3
;==========
; 50
three_rasterbar:
; 10+3
lda #$00 ; 2
sta FRAMEBUFFER,X ; 4
lda #$10 ; 2
sta FRAMEBUFFER+1,X ; 4
lda #$f3 ; 2
sta FRAMEBUFFER+2,X ; 4
lda #$bb ; 2
sta FRAMEBUFFER+3,X ; 4
lda #$03 ; 2
sta FRAMEBUFFER+4,X ; 4
lda #$01 ; 2
sta FRAMEBUFFER+5,X ; 4
jmp done_draw_rasterbar ; 3
;==========
; 52
done_draw_rasterbar:
; movement = 7 + 5 + 3 = 15
ldx YPOS ; 3
nop
; inx ; 2
cpx #24 ; 2
beq raster_bottom ;
; 2
jmp raster_move_done ; 3
raster_bottom:
; 3
ldx #0 ; 2
raster_move_done:
stx YPOS ; 3
jmp draw_rasterbars ; 3
.align $100
;==================
; Draw Rasterbars
;==================
draw_rasterbars:
; 2 + YSIZE*[(8*16) + 5] - 1
; 2 + (20*133) -1
; 2661 cycles
@ -318,7 +445,7 @@ raster_loop2:
sta $680,X ; 5
lda FRAMEBUFFER+4 ; 3
sta $700,X ; 5
lda FRAMEBUFFER+5 ; 3
lda FRAMEBUFFER+6 ; 3
sta $780,X ; 5
lda FRAMEBUFFER+8 ; 3
sta $428,X ; 5