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— base:rasterbars_small_source [2015-04-17 04:33] (current)
Line 1: Line 1:
 +====== Rasterbars 3 source ======
 +
 +A minimalistic rasterbar routine. No timing tables used.
 +
 +<​code>​
 +;coded by Graham/​Oxyron
 +
 + *= $c000
 +
 + lda #$7f
 + sta $dc0d
 + and $d011
 + sta $d011
 + lda #$32
 + sta $d012
 +
 + sei
 + lda #<irq
 + sta $0314
 + lda #>irq
 + sta $0315
 + lda #$01
 + sta $d01a
 + cli
 + rts
 +
 +irq:
 + lda #$ff
 + sta $d019
 +
 + ldx #$05
 +d dex
 + bne d
 +
 + ldx #$00
 +c ldy #$08
 +a lda colors,x
 + sta $d020
 + sta $d021
 + inx
 + dey
 + beq c
 +
 + txa
 + ldx #$07
 +b dex
 + bne b
 + tax
 +
 + cpx #$8c
 + bcc a
 +
 + jmp $ea34
 +
 + *= $c100
 +colors:
 + .byte $09,​$02,​$08,​$0a,​$0f,​$07,​$01,​$07,​$0f,​$0a,​$08,​$02,​$09,​$00
 + .byte $06,​$04,​$0e,​$05,​$03,​$0d,​$01,​$0d,​$03,​$05,​$0e,​$04,​$06,​$00
 + .byte $09,​$02,​$08,​$0a,​$0f,​$07,​$01,​$07,​$0f,​$0a,​$08,​$02,​$09,​$00
 + .byte $06,​$04,​$0e,​$05,​$03,​$0d,​$01,​$0d,​$03,​$05,​$0e,​$04,​$06,​$00
 + .byte $09,​$02,​$08,​$0a,​$0f,​$07,​$01,​$07,​$0f,​$0a,​$08,​$02,​$09,​$00
 + .byte $06,​$04,​$0e,​$05,​$03,​$0d,​$01,​$0d,​$03,​$05,​$0e,​$04,​$06,​$00
 + .byte $09,​$02,​$08,​$0a,​$0f,​$07,​$01,​$07,​$0f,​$0a,​$08,​$02,​$09,​$00
 + .byte $06,​$04,​$0e,​$05,​$03,​$0d,​$01,​$0d,​$03,​$05,​$0e,​$04,​$06,​$00
 + .byte $09,​$02,​$08,​$0a,​$0f,​$07,​$01,​$07,​$0f,​$0a,​$08,​$02,​$09,​$00
 + .byte $06,​$04,​$0e,​$05,​$03,​$0d,​$01,​$0d,​$03,​$05,​$0e,​$04,​$06,​$00
 +</​code>​
  
base/rasterbars_small_source.txt ยท Last modified: 2015-04-17 04:33 (external edit)

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