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79 lines
937 B
ArmAsm
79 lines
937 B
ArmAsm
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; VGI
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.include "zp.inc"
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.include "hardware.inc"
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VGI_MAXLEN = 7
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vgi_test:
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jsr HGR2
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; get pointer to image data
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lda #<clock_data
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sta VGIL
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lda #>clock_data
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sta VGIH
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vgi_loop:
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ldy #0
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data_smc:
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lda (VGIL),Y
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sta VGI_BUFFER,Y
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iny
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cpy #VGI_MAXLEN
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bne data_smc
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lda TYPE
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and #$f
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clc
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adc VGIL
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sta VGIL
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bcc no_oflo
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inc VGIH
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no_oflo:
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lda TYPE
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lsr
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lsr
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lsr
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lsr
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; look up action in jump table
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asl
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tax
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lda vgi_rts_table+1,X
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pha
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lda vgi_rts_table,X
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pha
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rts ; "jump" to subroutine
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vgi_rts_table:
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.word vgi_clearscreen-1
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.word vgi_simple_rectangle-1
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.word all_done-1
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.word all_done-1
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.word all_done-1
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.word all_done-1
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.word all_done-1
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.word all_done-1
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.word all_done-1
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.word all_done-1
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.word all_done-1
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.word all_done-1
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.word all_done-1
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.word all_done-1
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.word all_done-1
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.word all_done-1
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all_done:
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jmp all_done
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.include "vgi_clearscreen.s"
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.include "vgi_rectangle.s"
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.include "clock.data"
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