mirror of
https://github.com/deater/dos33fsprogs.git
synced 2024-05-28 17:41:29 +00:00
120 lines
1.1 KiB
ArmAsm
120 lines
1.1 KiB
ArmAsm
effect_midline:
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lda #7
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sta XX
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outer_outer_loop:
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ldy #120
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; comes in with 4
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outer_loop:
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ldx #192 ; 2
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; 6
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lda $00 ; nop 3 ; 3
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; 9
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jmp skip_nop
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; 12
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inner_loop:
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nop ; 2
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nop ; 2
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nop ; 2
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nop ; 2
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; 8
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; set text
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sta LORES ; 4
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skip_nop:
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sta SET_TEXT ; 4
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sta SETAN3 ; 4
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sta CLR80COL ; 4
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bit PAGE1 ; 4
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; 28
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jsr delay_12 ; 12
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; 40
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; set double-hires
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sta SET_GR ; 4
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sta HIRES ; 4
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sta CLRAN3 ; 4
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sta SET80COL ; 4
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bit PAGE2 ; 4
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; 60
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dex ; 2
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; 62
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bne inner_loop ; 2/3
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; 65
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; -1
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dey ; 2
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bne outer_loop ; 3
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dec XX
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bne outer_outer_loop
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.if 0
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; black and white
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; set double-hires
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sta SET_GR ; 4
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sta HIRES ; 4
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sta CLRAN3 ; 4
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sta SET80COL ; 4
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bit PAGE2 ; 4
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; 20
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jsr delay_12
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; 32
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; set text
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sta LORES ; 4
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sta SET_TEXT ; 4
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sta SETAN3 ; 4
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sta CLR80COL ; 4
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bit PAGE1 ; 4
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; 52
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nop
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nop
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nop
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nop
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nop
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; 62
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jmp effect_midline ; 3
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; 65
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.endif
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.if 0
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ldx #192 ; 2
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qloop:
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bit HIRES ; 4
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bit PAGE1 ; 4
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bit PAGE1 ; 4
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; 12
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jsr delay_12 ; 12
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jsr delay_12 ; 12
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; 36
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bit LORES ; 4
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bit PAGE2 ; 4
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bit PAGE2 ; 4
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; 48
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jsr delay_12 ; 12
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; 60
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dex ; 2
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; 62
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bne qloop ; 2/3
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.endif
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