83 lines
3.1 KiB
ArmAsm
83 lines
3.1 KiB
ArmAsm
loaderPalette:
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.word $0aef,$06af,$0800,$0861,$0c93,$0eb4,$0d66,$0f9a,$0777,$0f00,$0bbb,$0ddd,$007b,$0a5b,$0000,$0fff
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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; showLoadingScreen
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;
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;
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showLoadingScreen:
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lda #$0000
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jsr slowColorFill
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SHRVIDEO
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SHADOWMEMORY
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jsr initSCBs
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lda #loaderPalette
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sta PARAML0
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lda #0
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jsr setPalette
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BORDER_COLOR #$7
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lda #$1111
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jsr slowColorFill
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jsr renderLoadingBar
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rts
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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; slowColorFill
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; Fills the screen with a color (or two). Slow because it has to run from
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; bank 0 on the slow graphics path
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;
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; A = 4:4:4:4 = Palette entries to fill
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;
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; Trashes X,Y
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slowColorFill:
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ldy #200
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ldx #$2000
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slowColorFillLoop:
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; 80 STAs, for 1 line
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; sta VRAMBANK,x inx inx
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.byte $9F,$00,$00,$E1,$e8,$e8,$9F,$00,$00,$E1,$e8,$e8,$9F,$00,$00,$E1,$e8,$e8,$9F,$00,$00,$E1,$e8,$e8,$9F,$00,$00,$E1,$e8,$e8,$9F,$00,$00,$E1,$e8,$e8,$9F,$00,$00,$E1,$e8,$e8,$9F,$00,$00,$E1,$e8,$e8
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.byte $9F,$00,$00,$E1,$e8,$e8,$9F,$00,$00,$E1,$e8,$e8,$9F,$00,$00,$E1,$e8,$e8,$9F,$00,$00,$E1,$e8,$e8,$9F,$00,$00,$E1,$e8,$e8,$9F,$00,$00,$E1,$e8,$e8,$9F,$00,$00,$E1,$e8,$e8,$9F,$00,$00,$E1,$e8,$e8
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.byte $9F,$00,$00,$E1,$e8,$e8,$9F,$00,$00,$E1,$e8,$e8,$9F,$00,$00,$E1,$e8,$e8,$9F,$00,$00,$E1,$e8,$e8,$9F,$00,$00,$E1,$e8,$e8,$9F,$00,$00,$E1,$e8,$e8,$9F,$00,$00,$E1,$e8,$e8,$9F,$00,$00,$E1,$e8,$e8
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.byte $9F,$00,$00,$E1,$e8,$e8,$9F,$00,$00,$E1,$e8,$e8,$9F,$00,$00,$E1,$e8,$e8,$9F,$00,$00,$E1,$e8,$e8,$9F,$00,$00,$E1,$e8,$e8,$9F,$00,$00,$E1,$e8,$e8,$9F,$00,$00,$E1,$e8,$e8,$9F,$00,$00,$E1,$e8,$e8
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.byte $9F,$00,$00,$E1,$e8,$e8,$9F,$00,$00,$E1,$e8,$e8,$9F,$00,$00,$E1,$e8,$e8,$9F,$00,$00,$E1,$e8,$e8,$9F,$00,$00,$E1,$e8,$e8,$9F,$00,$00,$E1,$e8,$e8,$9F,$00,$00,$E1,$e8,$e8,$9F,$00,$00,$E1,$e8,$e8
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.byte $9F,$00,$00,$E1,$e8,$e8,$9F,$00,$00,$E1,$e8,$e8,$9F,$00,$00,$E1,$e8,$e8,$9F,$00,$00,$E1,$e8,$e8,$9F,$00,$00,$E1,$e8,$e8,$9F,$00,$00,$E1,$e8,$e8,$9F,$00,$00,$E1,$e8,$e8,$9F,$00,$00,$E1,$e8,$e8
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.byte $9F,$00,$00,$E1,$e8,$e8,$9F,$00,$00,$E1,$e8,$e8,$9F,$00,$00,$E1,$e8,$e8,$9F,$00,$00,$E1,$e8,$e8,$9F,$00,$00,$E1,$e8,$e8,$9F,$00,$00,$E1,$e8,$e8,$9F,$00,$00,$E1,$e8,$e8,$9F,$00,$00,$E1,$e8,$e8
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.byte $9F,$00,$00,$E1,$e8,$e8,$9F,$00,$00,$E1,$e8,$e8,$9F,$00,$00,$E1,$e8,$e8,$9F,$00,$00,$E1,$e8,$e8,$9F,$00,$00,$E1,$e8,$e8,$9F,$00,$00,$E1,$e8,$e8,$9F,$00,$00,$E1,$e8,$e8,$9F,$00,$00,$E1,$e8,$e8
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.byte $9F,$00,$00,$E1,$e8,$e8,$9F,$00,$00,$E1,$e8,$e8,$9F,$00,$00,$E1,$e8,$e8,$9F,$00,$00,$E1,$e8,$e8,$9F,$00,$00,$E1,$e8,$e8,$9F,$00,$00,$E1,$e8,$e8,$9F,$00,$00,$E1,$e8,$e8,$9F,$00,$00,$E1,$e8,$e8
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.byte $9F,$00,$00,$E1,$e8,$e8,$9F,$00,$00,$E1,$e8,$e8,$9F,$00,$00,$E1,$e8,$e8,$9F,$00,$00,$E1,$e8,$e8,$9F,$00,$00,$E1,$e8,$e8,$9F,$00,$00,$E1,$e8,$e8,$9F,$00,$00,$E1,$e8,$e8,$9F,$00,$00,$E1,$e8,$e8
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dey
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beq slowColorFillLoopDone
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jmp slowColorFillLoop
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slowColorFillLoopDone:
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rts
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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; initSCBs
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; Initialize all scanline control bytes
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;
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; Trashes A,X
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initSCBs:
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BITS8
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lda #0
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ldx #200 ;set all 200 scbs to A
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initSCBsLoop:
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dex
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sta $e19d00,x
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cpx #0
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bne initSCBsLoop
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BITS16
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rts
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