dos33fsprogs/games/duke/duke_title.s
Vince Weaver b1238af49d re-arranged the entire directory structure
this will probably upset people
2021-01-05 15:29:31 -05:00

278 lines
4.4 KiB
ArmAsm

; Duke Title
; loads a HGR version of the title
; by deater (Vince Weaver) <vince@deater.net>
; Zero Page
.include "zp.inc"
.include "hardware.inc"
.include "common_defines.inc"
duke_title_start:
;===================
; init screen
;===================
jsr TEXT
jsr HOME
bit KEYRESET
bit SET_GR
bit PAGE0
bit HIRES
bit FULLGR
;===================
; machine workarounds
;===================
; mostly IIgs
;===================
; thanks to 4am who provided this code from Total Replay
lda ROM_MACHINEID
cmp #$06
bne not_a_iigs
sec
jsr $FE1F ; check for IIgs
bcs not_a_iigs
; gr/text page2 handling broken on early IIgs models
; this enables the workaround
jsr ROM_TEXT2COPY ; set alternate display mode on IIgs
cli ; enable VBL interrupts
; also set background color to black instead of blue
lda NEWVIDEO
and #%00011111 ; bit 7 = 0 -> IIgs Apple II-compat video modes
; bit 6 = 0 -> IIgs 128K memory map same as IIe
; bit 5 = 0 -> IIgs DHGR is color, not mono
; bits 0-4 unchanged
sta NEWVIDEO
lda #$F0
sta TBCOLOR ; white text on black background
lda #$00
sta CLOCKCTL ; black border
sta CLOCKCTL ; set twice for VidHD
not_a_iigs:
;===================
; Load hires graphics
;===================
reload_everything:
lda #<new_title
sta getsrc_smc+1 ; LZSA_SRC_LO
lda #>new_title
sta getsrc_smc+2 ; LZSA_SRC_HI
lda #$20
jsr decompress_lzsa2_fast
;===================================
; detect if we have a language card
; and load sound into it if possible
;===================================
; lda #0
; sta SOUND_STATUS ; clear out, sound enabled
; jsr detect_language_card
; bcs no_language_card
; update sound status
; lda SOUND_STATUS
; ora #SOUND_IN_LC
; sta SOUND_STATUS
; load sounds into LC
; read ram, write ram, use $d000 bank1
; bit $C08B
; bit $C08B
; lda #<linking_noise_compressed
; sta getsrc_smc+1
; lda #>linking_noise_compressed
; sta getsrc_smc+2
; lda #$D0 ; decompress to $D000
; jsr decompress_lzsa2_fast
;blah:
; read rom, nowrite, use $d000 bank1
; bit $C08A
no_language_card:
;===================================
; Setup Mockingboard
;===================================
; lda #0
; sta DONE_PLAYING
; sta LOOP
; detect mockingboard
; jsr mockingboard_detect
; bcc mockingboard_notfound
mockingboard_found:
;; jsr mockingboard_patch ; patch to work in slots other than 4?
; lda SOUND_STATUS
; ora #SOUND_MOCKINGBOARD
; sta SOUND_STATUS
;=======================
; Set up 50Hz interrupt
;========================
; jsr mockingboard_init
; jsr mockingboard_setup_interrupt
;============================
; Init the Mockingboard
;============================
; jsr reset_ay_both
; jsr clear_ay_both
;==================
; init song
;==================
; jsr pt3_init_song
; jmp done_setup_sound
mockingboard_notfound:
done_setup_sound:
;===================================
; Do Intro Sequence
;===================================
; wait a bit at LOAD screen
lda #100
jsr wait_a_bit
done_intro:
; restore to full screen (no text)
bit FULLGR
bit LORES
;============================
; init vars
jsr init_vars
;============================
; set up initial location
lda #LOAD_DUKE1
sta WHICH_LOAD ; start at first level
rts
;==========================
; includes
;==========================
.include "gr_pageflip.s"
.include "gr_copy.s"
; .include "wait_a_bit.s"
.include "gr_offsets.s"
.include "decompress_fast_v2.s"
.include "print_help.s"
.include "gr_fast_clear.s"
.include "text_print.s"
.include "init_vars.s"
; .include "graphics_title/title_graphics.inc"
; .include "lc_detect.s"
; pt3 player
; .include "pt3_lib_core.s"
; .include "pt3_lib_init.s"
; .include "interrupt_handler.s"
; .include "pt3_lib_mockingboard_detect.s"
; .include "pt3_lib_mockingboard_setup.s"
new_title:
.incbin "title/new_title.lzsa"
;====================================
; wait for keypress or a few seconds
;====================================
wait_a_bit:
bit KEYRESET
tax
keyloop:
lda #200 ; delay a bit
jsr WAIT
lda KEYPRESS
bmi done_keyloop
; bmi keypress_exit
dex
bne keyloop
done_keyloop:
bit KEYRESET
cmp #'H'|$80
bne really_done_keyloop
bit SET_TEXT
jsr print_help
bit SET_GR
bit PAGE0
ldx #100
jmp keyloop
really_done_keyloop:
rts
;PT3_LOC = theme_music
;.align $100
;theme_music:
;.incbin "audio/theme.pt3"