278 lines
4.0 KiB
ArmAsm
278 lines
4.0 KiB
ArmAsm
; Trogdor
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; by deater (Vince Weaver) <vince@deater.net>
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trogdor_start:
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;=====================
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; initializations
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;=====================
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jsr hardware_detect
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jsr hgr_make_tables
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;===================
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; restart?
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;===================
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restart:
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lda #0
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sta DRAW_PAGE
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;==================================
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; load music into the language card
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; into $D000 set 1
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;==================================
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; read/write RAM, use $d000 bank1
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bit $C083
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bit $C083
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lda #0 ; load MUSIC from disk
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sta WHICH_LOAD
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jsr load_file
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lda #0
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sta DONE_PLAYING
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lda #1
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sta LOOP
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; patch mockingboard
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lda SOUND_STATUS
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beq skip_mbp1
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jsr mockingboard_patch ; patch to work in slots other than 4?
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skip_mbp1:
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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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dont_enable_mc:
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skip_all_checks:
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;============================
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;============================
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; load title image from disk
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;============================
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;============================
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; load from disk
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bit SET_GR
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bit HIRES
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bit TEXTGR
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bit PAGE2
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lda #2 ; TITLE
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sta WHICH_LOAD
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jsr load_file
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bit PAGE1
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; decompress
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lda #<$4000
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sta zx_src_l+1
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lda #>$4000
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sta zx_src_h+1
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lda #$20
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jsr zx02_full_decomp
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;=======================
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;=======================
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; Print message
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;=======================
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;=======================
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; print non-inverse
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jsr set_normal
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lda SOUND_STATUS
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and #SOUND_MOCKINGBOARD
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beq print_no_mock
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print_mock:
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lda MB_ADDR_H
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and #$7
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clc
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adc #$B0
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sta mockingboard_string+29
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lda #<mockingboard_string
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sta OUTL
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lda #>mockingboard_string
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jmp done_set_message
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print_no_mock:
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lda #<no_mockingboard_string
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sta OUTL
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lda #>no_mockingboard_string
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done_set_message:
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sta OUTH
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; print the text
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jsr move_and_print
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; print title messages
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lda #<title_string
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sta OUTL
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lda #>title_string
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sta OUTH
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; print the text
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jsr move_and_print
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jsr move_and_print
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; wait a bit, then change to credits
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lda #50
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jsr wait_a_bit
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lda #<bottom_string1
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sta OUTL
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lda #>bottom_string1
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sta OUTH
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; print the text
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jsr move_and_print
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lda #50
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jsr wait_a_bit
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jsr move_and_print
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jsr wait_until_keypress
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;=======================
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;=======================
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; Load FLAMES
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;=======================
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;=======================
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load_flames:
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; load from disk
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lda #3 ; FLAMES
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sta WHICH_LOAD
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jsr load_file
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;=======================
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;=======================
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; Load TROGDOR
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;=======================
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;=======================
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load_trogdor:
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; load from disk
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lda #1 ; TROGDOR
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sta WHICH_LOAD
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jsr load_file
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;=======================
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;=======================
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; Run intro
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;=======================
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;=======================
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cli ; start music
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jsr $8000
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; bit PAGE1 ; be sure we're on PAGE1
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; clear text screen
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; lda #$A0
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; sta clear_all_color+1
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; jsr clear_all
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; switch to text/gr
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; bit TEXTGR
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; print non-inverse
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; jsr set_normal
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; print messages
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; lda #<disk_change_string
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; sta OUTL
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; lda #>disk_change_string
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; sta OUTH
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; print the text
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; jsr move_and_print
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; bit KEYRESET ; just to be safe
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; jsr wait_until_keypress
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forever:
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jmp forever
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.include "wait_keypress.s"
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.include "zx02_optim.s"
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.include "gs_interrupt.s"
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title_string:
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.byte 1,20,"NEW FROM VIDELECTRIX: A POSSIBLY LEGAL",0
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.byte 7,21,"PROGRAM FOR YOUR APPLE II!",0
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bottom_string1:
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.byte 3,23," CODE BY DEATER, MUSIC BY TOM_FJM",0
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bottom_string2:
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.byte 3,23," = PRESS ANY KEY TO START = ",0
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; 0123456789012345678901234567890123456789
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mockingboard_string:
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.byte 6,23,"MOCKINGBOARD DETECTED SLOT 4",0
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no_mockingboard_string:
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.byte 3,23,"NO MOCKINGBOARD, CONTINUING ANYWAY",0
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.include "pt3_lib_mockingboard_patch.s"
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.include "hardware_detect.s"
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