2020-11-14 20:19:56 +00:00
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; Duke PoC
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; by deater (Vince Weaver) <vince@deater.net>
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; Zero Page
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.include "zp.inc"
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.include "hardware.inc"
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duke_start:
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;===================
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; init screen
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jsr TEXT
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jsr HOME
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bit KEYRESET
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bit SET_GR
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bit PAGE0
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bit LORES
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bit TEXTGR
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lda #0
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sta ANIMATE_FRAME
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sta FRAMEL
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sta FRAMEH
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sta DISP_PAGE
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lda #4
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sta DRAW_PAGE
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;====================================
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; load duke bg
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;====================================
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lda #<duke_lzsa
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sta LZSA_SRC_LO
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lda #>duke_lzsa
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sta LZSA_SRC_HI
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lda #$c ; load to page $c00
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jsr decompress_lzsa2_fast
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;====================================
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;====================================
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; Main LOGO loop
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;====================================
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;====================================
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duke_loop:
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; copy over background
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jsr gr_copy_to_current
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2020-11-27 02:35:16 +00:00
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jsr draw_status_bar
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2020-11-14 20:19:56 +00:00
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jsr page_flip
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; early escape if keypressed
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lda KEYPRESS
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bpl do_duke_loop
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jmp done_with_duke
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do_duke_loop:
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; delay
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lda #200
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jsr WAIT
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jmp duke_loop
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done_with_duke:
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bit KEYRESET ; clear keypress
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jmp done_with_duke
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;==========================
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; includes
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;==========================
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; level graphics
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.include "duke.inc"
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.include "text_print.s"
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.include "gr_offsets.s"
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; .include "gr_fast_clear.s"
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.include "gr_copy.s"
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.include "gr_pageflip.s"
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.include "decompress_fast_v2.s"
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2020-11-27 02:35:16 +00:00
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.include "status_bar.s"
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