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megademo: c64_opener looks nice

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This commit is contained in:
Vince Weaver 2018-10-21 00:43:12 -04:00
parent 701e785279
commit 6fa62ea251
3 changed files with 8 additions and 4 deletions
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1
megademo/SIZE
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@ -19,6 +19,7 @@
30009 -- starring people but with LG removed for now 30009 -- starring people but with LG removed for now
28217 -- optimize the erase routine in waterfall 28217 -- optimize the erase routine in waterfall
28097 -- move takeoff graphics to megademo 28097 -- move takeoff graphics to megademo
28594 -- c64 opener actually works
Graphics sizes: Graphics sizes:
(LG lores=300B) (LG lores=300B)

11
megademo/c64_opener.s
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@ -58,18 +58,21 @@ c64_opener:
; 5070+4550 = 9620 ; 5070+4550 = 9620
; -16 ; -16
; -3 ; -3
; +1 to get things aligned?
; -9298 ; -9298
; ======= ; =======
; 303 ; 304
jsr gr_copy_to_current ; 6+ 9292 jsr gr_copy_to_current ; 6+ 9292
; Try X=29 Y=2 cycles=303 ; Try X=29 Y=2 cycles=303
; Try X=18 Y=100 cycles=9601 ; Try X=59 Y=1 cycles=302 R2
ldy #2 ; 2 nop
loopcoA:ldx #29 ; 2
ldy #1 ; 2
loopcoA:ldx #59 ; 2
loopcoB:dex ; 2 loopcoB:dex ; 2
bne loopcoB ; 2nt/3 bne loopcoB ; 2nt/3
dey ; 2 dey ; 2

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megademo/megademo.dsk
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