Apple-2-SW/dos33fsprogs
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space_bars: framebuffer working

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Vince Weaver 2018-10-08 00:00:18 -04:00
parent c66c53acd0
commit 034641d7f9
1 changed files with 55 additions and 42 deletions
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97
space_bars/game.s
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@ -305,25 +305,24 @@ sbloopF:dex ; 2
;======================================================
; do_nothing should be 4550
; -3697 draw_framebuffer
; -3278 draw_framebuffer
; -34 keypress
; -1 adjust center mark back
; ===========
; 818
; 1237
; Try X=53 Y=3 cycles=814 R4
; Try X=246 Y=1 cycles=1237
nop
nop
; nop
ldy #3 ; 2
sbloop1:ldx #53 ; 2
ldy #1 ; 2
sbloop1:ldx #246 ; 2
sbloop2:dex ; 2
bne sbloop2 ; 2nt/3
dey ; 2
bne sbloop1 ; 2nt/3
jsr draw_framebuffer ; 6+3691
jsr draw_framebuffer ; 6+3272
; no keypress = 10+(24) = 34
@ -378,55 +377,69 @@ sb_exit:
.align $100
; total =
; 24 wide: = 505
; 28 wide: = 589
; 32 wide: = 673
; 4 wide: = 85
; 12 wide: = 253
; 20 wide: = 421
; 28 wide: = 589
; 36 wide: = 757
; 40 wide: 2+40*29 = 1162
; 5
; 40 wide: = 1161
; 6
;====================================
; 3691
; 3272
draw_framebuffer:
; 2 + (24*(X*8)+5) -1 =
; 2 + 24*(16+5) -1 = 505
; 2 + (4*(X*8)+5) -1 =
; 2 + 4*(16+5) -1 = 85
ldx #24 ; 2
fb24_loop:
lda FRAMEBUFFER+2 ; 3
sta $6a8+12-1,x ; 5
lda FRAMEBUFFER+3 ; 3
sta $728+12-1,x ; 5
ldx #4 ; 2
fb4_loop:
lda FRAMEBUFFER+0 ; 3
sta $5a8+18-1,x ; 5
lda FRAMEBUFFER+1 ; 3
sta $628+18-1,x ; 5
dex ; 2
bne fb24_loop ; 3
bne fb4_loop ; 3
; 2 + (12*(X*8)+5) -1 =
; 2 + 12*(16+5) -1 = 253
ldx #12 ; 2
fb12_loop:
lda FRAMEBUFFER+2 ; 3
sta $6a8+14-1,x ; 5
lda FRAMEBUFFER+3 ; 3
sta $728+14-1,x ; 5
dex ; 2
bne fb12_loop ; 3
; 2 + (20*(X*8)+5) -1 =
; 2 + 20*(16+5) -1 = 421
ldx #20 ; 2
fb20_loop:
lda FRAMEBUFFER+4 ; 3
sta $7a8+10-1,x ; 5
lda FRAMEBUFFER+5 ; 3
sta $450+10-1,x ; 5
dex ; 2
bne fb20_loop ; 3
; 2 + (28*(X*8)+5) -1 =
; 2 + 28*(16+5) -1 = 589
ldx #28 ; 2
fb28_loop:
lda FRAMEBUFFER+4 ; 3
sta $7a8+8-1,x ; 5
lda FRAMEBUFFER+5 ; 3
sta $450+8-1,x ; 5
lda FRAMEBUFFER+6 ; 3
sta $4d0+6-1,x ; 5
lda FRAMEBUFFER+7 ; 3
sta $550+6-1,x ; 5
dex ; 2
bne fb28_loop ; 3
; 2 + (32*(X*8)+5) -1 =
; 2 + 32*(16+5) -1 = 673
ldx #32 ; 2
fb32_loop:
lda FRAMEBUFFER+6 ; 3
sta $4d0+4-1,x ; 5
lda FRAMEBUFFER+7 ; 3
sta $550+4-1,x ; 5
dex ; 2
bne fb32_loop ; 3
; 2 + (36*(X*8)+5) -1 =
; 2 + 36*(16+5) -1 = 757
@ -439,8 +452,8 @@ fb36_loop:
dex ; 2
bne fb36_loop ; 3
; 2 + (40*(X*8)+5) + 5 = 847
; 2 + 40*(24+5) + 5 = 1167
; 2 + (40*(X*8)+5) -1 =
; 2 + 40*(24+5) + -1 = 1161
ldx #40 ; 2
fb40_loop: