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xmas2019: closer

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This commit is contained in:
Vince Weaver 2019-12-19 00:19:46 -05:00
parent 0f133e83be
commit d1da78cfc0
1 changed files with 27 additions and 10 deletions
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37
xmas_2019/xmas2019.s
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@ -151,16 +151,16 @@ vblank_start:
; Try X=13 Y=64 cycles=4545 R2
nop
; nop
ldy #64 ; 2
dloop1: ldx #13 ; 2
dloop2: dex ; 2
bne dloop2 ; 2nt/3
dey ; 2
bne dloop1 ; 2nt/3
; ldy #64 ; 2
;dloop1: ldx #13 ; 2
;dloop2: dex ; 2
; bne dloop2 ; 2nt/3
; dey ; 2
; bne dloop1 ; 2nt/3
jmp display_loop
; jmp display_loop
;==========================================================
;==========================================================
@ -321,8 +321,25 @@ ll_smc4:
;==============================================================
;==============================================================
; lda #100
; jsr WAIT
; 4550 cycles
;-1708
; -13
;-2761
; +1
; -3
;========
; 66
; Try X=3 Y=3 cycles=64R2
nop
ldy #3 ; 2
eloop1: ldx #3 ; 2
eloop2: dex ; 2
bne eloop2 ; 2nt/3
dey ; 2
bne eloop1 ; 2nt/3
jmp display_loop ; 3