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https://github.com/deater/dos33fsprogs.git
synced 2024-09-10 23:54:33 +00:00
chiptune: move visualization to the interrupt handler
a bit of a cheat. Locks the update to 50Hz
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@ -98,19 +98,19 @@ mockingboard_found:
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; Draw title screen
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;============================
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jsr set_gr_page0
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jsr set_gr_page0 ; set page 0
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lda #$4
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lda #$4 ; draw page 1
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sta DRAW_PAGE
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jsr clear_screens
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jsr clear_screens ; clear both screens
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lda #<chip_title
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lda #<chip_title ; point to title data
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sta GBASL
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lda #>chip_title
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sta GBASH
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; Load image
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; Load image ; load the image
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lda #<$400
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sta BASL
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lda #>$400
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@ -118,9 +118,9 @@ mockingboard_found:
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jsr load_rle_gr
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;===========================
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;==================
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; load first song
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;===========================
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;==================
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jsr new_song
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@ -141,7 +141,6 @@ mockingboard_found:
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;============================
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; Init Background
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;============================
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; jsr clear_screens ; clear top/bottom of page 0/1
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jsr set_gr_page0
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lda #0
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@ -151,23 +150,24 @@ mockingboard_found:
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;============================
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; Loop forever
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;============================
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playing_loop:
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main_loop:
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;============================
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; rasters
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;============================
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jsr clear_top
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; jsr clear_top
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jsr draw_rasters
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; jsr draw_rasters
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jsr volume_bars
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; jsr volume_bars
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; jsr page_flip
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jsr page_flip
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lda DONE_PLAYING
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beq playing_loop
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beq main_loop
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done_play:
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@ -250,6 +250,23 @@ update_r0_pointer:
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;=================================
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done_interrupt:
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;=================================
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; Moved visualization here as a hack
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;=================================
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;============================
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; Visualization
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;============================
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jsr clear_top
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jsr draw_rasters
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jsr volume_bars
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jsr page_flip
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pla ; restore a ; 4
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rti ; return from interrupt ; 6
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