mirror of
https://github.com/deater/dos33fsprogs.git
synced 2024-11-16 23:20:43 +00:00
278 lines
4.4 KiB
ArmAsm
278 lines
4.4 KiB
ArmAsm
; Duke Title
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; loads a HGR version of the title
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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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duke_title_start:
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;===================
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; init screen
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;===================
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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 HIRES
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bit FULLGR
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;===================
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; machine workarounds
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;===================
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; mostly IIgs
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;===================
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; thanks to 4am who provided this code from Total Replay
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lda ROM_MACHINEID
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cmp #$06
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bne not_a_iigs
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sec
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jsr $FE1F ; check for IIgs
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bcs not_a_iigs
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; gr/text page2 handling broken on early IIgs models
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; this enables the workaround
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jsr ROM_TEXT2COPY ; set alternate display mode on IIgs
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cli ; enable VBL interrupts
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; also set background color to black instead of blue
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lda NEWVIDEO
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and #%00011111 ; bit 7 = 0 -> IIgs Apple II-compat video modes
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; bit 6 = 0 -> IIgs 128K memory map same as IIe
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; bit 5 = 0 -> IIgs DHGR is color, not mono
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; bits 0-4 unchanged
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sta NEWVIDEO
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lda #$F0
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sta TBCOLOR ; white text on black background
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lda #$00
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sta CLOCKCTL ; black border
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sta CLOCKCTL ; set twice for VidHD
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not_a_iigs:
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;===================
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; Load hires graphics
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;===================
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reload_everything:
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lda #<new_title
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sta getsrc_smc+1 ; LZSA_SRC_LO
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lda #>new_title
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sta getsrc_smc+2 ; LZSA_SRC_HI
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lda #$20
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jsr decompress_lzsa2_fast
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;===================================
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; detect if we have a language card
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; and load sound into it if possible
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;===================================
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; lda #0
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; sta SOUND_STATUS ; clear out, sound enabled
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; jsr detect_language_card
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; bcs no_language_card
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; update sound status
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; lda SOUND_STATUS
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; ora #SOUND_IN_LC
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; sta SOUND_STATUS
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; load sounds into LC
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; read ram, write ram, use $d000 bank1
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; bit $C08B
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; bit $C08B
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; lda #<linking_noise_compressed
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; sta getsrc_smc+1
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; lda #>linking_noise_compressed
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; sta getsrc_smc+2
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; lda #$D0 ; decompress to $D000
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; jsr decompress_lzsa2_fast
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;blah:
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; read rom, nowrite, use $d000 bank1
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; bit $C08A
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no_language_card:
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;===================================
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; Setup Mockingboard
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;===================================
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; lda #0
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; sta DONE_PLAYING
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; sta LOOP
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; detect mockingboard
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; jsr mockingboard_detect
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; bcc mockingboard_notfound
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mockingboard_found:
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;; jsr mockingboard_patch ; patch to work in slots other than 4?
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; lda SOUND_STATUS
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; ora #SOUND_MOCKINGBOARD
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; sta SOUND_STATUS
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;=======================
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; Set up 50Hz interrupt
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;========================
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; jsr mockingboard_init
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; jsr mockingboard_setup_interrupt
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;============================
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; Init the Mockingboard
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;============================
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; jsr reset_ay_both
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; jsr clear_ay_both
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;==================
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; init song
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;==================
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; jsr pt3_init_song
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; jmp done_setup_sound
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mockingboard_notfound:
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done_setup_sound:
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;===================================
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; Do Intro Sequence
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;===================================
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; wait a bit at LOAD screen
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lda #100
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jsr wait_a_bit
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done_intro:
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; restore to full screen (no text)
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bit FULLGR
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bit LORES
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;============================
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; init vars
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jsr init_vars
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;============================
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; set up initial location
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lda #LOAD_DUKE1
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sta WHICH_LOAD ; start at first level
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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 "decompress_fast_v2.s"
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.include "print_help.s"
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.include "gr_fast_clear.s"
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.include "text_print.s"
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.include "init_vars.s"
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; .include "graphics_title/title_graphics.inc"
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; .include "lc_detect.s"
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; pt3 player
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; .include "pt3_lib_core.s"
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; .include "pt3_lib_init.s"
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; .include "interrupt_handler.s"
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; .include "pt3_lib_mockingboard_detect.s"
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; .include "pt3_lib_mockingboard_setup.s"
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new_title:
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.incbin "title/new_title.lzsa"
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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 PAGE0
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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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;PT3_LOC = theme_music
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;.align $100
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;theme_music:
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;.incbin "audio/theme.pt3"
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