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22 lines
435 B
ArmAsm
22 lines
435 B
ArmAsm
;==============
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; hgr_page_flip
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;==============
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hgr_page_flip:
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lda DISP_PAGE ;
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beq hgr_page_flip_show_1 ;
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hgr_page_flip_show_0:
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bit PAGE0 ;
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lda #$40 ;
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sta HGR_PAGE ; HGR_PAGE=$40 ;
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lda #0 ;
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sta DISP_PAGE ; DISP_PAGE=0 ;
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rts ;
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hgr_page_flip_show_1:
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bit PAGE1 ;
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lda #$20
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sta HGR_PAGE ; DRAW_PAGE=$20 ;
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lda #1 ;
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sta DISP_PAGE ; DISP_PAGE=1 ;
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rts ;
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