mirror of
https://github.com/deater/dos33fsprogs.git
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133 lines
1.7 KiB
ArmAsm
133 lines
1.7 KiB
ArmAsm
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; Keen1 Story
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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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.include "common_defines.inc"
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story_data = $7000
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keen_story_start:
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;===================
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; init screen
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;===================
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bit KEYRESET
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bit SET_GR
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bit PAGE1
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bit HIRES
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bit FULLGR
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;===================
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; Load story data
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;===================
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lda #<compressed_story_data
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sta ZX0_src
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lda #>compressed_story_data
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sta ZX0_src+1
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lda #>story_data ; decompress to story data location
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jsr full_decomp
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;===================
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; Load hires graphics
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;===================
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load_background:
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lda #<story_bg
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sta ZX0_src
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lda #>story_bg
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sta ZX0_src+1
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lda #$20 ; decompress to hgr page1
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jsr full_decomp
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wait_until_keypress:
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lda KEYPRESS
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bpl wait_until_keypress
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bit KEYRESET
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lda #LOAD_TITLE
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sta WHICH_LOAD
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rts
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;==========================
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; includes
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;==========================
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.include "gr_pageflip.s"
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.include "gr_copy.s"
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; .include "wait_a_bit.s"
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.include "gr_offsets.s"
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.include "zx02_optim.s"
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.include "text_help.s"
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.include "gr_fast_clear.s"
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.include "text_print.s"
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; .include "lc_detect.s"
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story_bg:
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.incbin "graphics/keen1_story.hgr.zx02"
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compressed_story_data:
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.incbin "story/story_data.zx02"
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;====================================
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; wait for keypress or a few seconds
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;====================================
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wait_a_bit:
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bit KEYRESET
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tax
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keyloop:
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lda #200 ; delay a bit
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jsr WAIT
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lda KEYPRESS
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bmi done_keyloop
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; bmi keypress_exit
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dex
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bne keyloop
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done_keyloop:
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bit KEYRESET
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cmp #'H'|$80
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bne really_done_keyloop
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bit SET_TEXT
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jsr print_help
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bit SET_GR
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bit PAGE1
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ldx #100
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jmp keyloop
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really_done_keyloop:
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rts
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