mirror of
https://github.com/deater/dos33fsprogs.git
synced 2024-12-26 11:30:12 +00:00
434 lines
8.3 KiB
ArmAsm
434 lines
8.3 KiB
ArmAsm
; Display fancy Fireworks
|
|
|
|
; HGR plus 40x48d page1/page2 every-1-scanline pageflip mode
|
|
|
|
; by deater (Vince Weaver) <vince@deater.net>
|
|
|
|
; Zero Page
|
|
FRAMEBUFFER = $00 ; $00 - $0F
|
|
YPOS = $10
|
|
YPOS_SIN = $11
|
|
CH = $24
|
|
CV = $25
|
|
GBASL = $26
|
|
GBASH = $27
|
|
BASL = $28
|
|
BASH = $29
|
|
FRAME = $60
|
|
WAITING = $62
|
|
LETTERL = $63
|
|
LETTERH = $64
|
|
LETTERX = $65
|
|
LETTERY = $66
|
|
LETTERD = $67
|
|
LETTER = $68
|
|
BLARGH = $69
|
|
HGR_COLOR = $E4
|
|
STATE = $ED
|
|
DRAW_PAGE = $EE
|
|
LASTKEY = $F1
|
|
PADDLE_STATUS = $F2
|
|
TEMP = $FA
|
|
WHICH = $FB
|
|
|
|
; Soft Switches
|
|
KEYPRESS= $C000
|
|
KEYRESET= $C010
|
|
SPEAKER = $C030
|
|
SET_GR = $C050 ; Enable graphics
|
|
SET_TEXT= $C051 ; Enable text
|
|
FULLGR = $C052 ; Full screen, no text
|
|
TEXTGR = $C053 ; Split screen
|
|
PAGE0 = $C054 ; Page0
|
|
PAGE1 = $C055 ; Page1
|
|
LORES = $C056 ; Enable LORES graphics
|
|
HIRES = $C057 ; Enable HIRES graphics
|
|
|
|
PADDLE_BUTTON0 = $C061
|
|
PADDL0 = $C064
|
|
PTRIG = $C070
|
|
|
|
; ROM routines
|
|
;HGR = $F3E2
|
|
;HPLOT0 = $F457
|
|
;HGLIN = $F53A
|
|
;COLORTBL= $F6F6
|
|
TEXT = $FB36 ;; Set text mode
|
|
HOME = $FC58 ;; Clear the text screen
|
|
WAIT = $FCA8 ;; delay 1/2(26+27A+5A^2) us
|
|
|
|
|
|
; jsr draw_fireworks
|
|
|
|
;==================================
|
|
;==================================
|
|
|
|
|
|
setup_background:
|
|
|
|
;===================
|
|
; init screen
|
|
jsr TEXT
|
|
jsr HOME
|
|
jsr hgr
|
|
bit KEYRESET
|
|
|
|
;===================
|
|
; init vars
|
|
|
|
lda #0
|
|
sta DRAW_PAGE
|
|
sta STATE
|
|
sta WAITING
|
|
init_letters:
|
|
lda #<letters
|
|
sta LETTERL
|
|
lda #>letters
|
|
sta LETTERH
|
|
lda #39
|
|
sta LETTERX
|
|
lda #22
|
|
sta LETTERY
|
|
lda #25
|
|
sta LETTERD
|
|
|
|
|
|
;=============================
|
|
; Load graphic page0
|
|
|
|
lda #$0c
|
|
sta BASH
|
|
lda #$00
|
|
sta BASL ; load image to $c00
|
|
|
|
lda #<bg_final_low
|
|
sta GBASL
|
|
lda #>bg_final_low
|
|
sta GBASH
|
|
jsr load_rle_gr
|
|
|
|
lda #4
|
|
sta DRAW_PAGE
|
|
|
|
jsr gr_copy_to_current ; copy to page1
|
|
|
|
; GR part
|
|
bit PAGE1
|
|
bit LORES ; 4
|
|
bit SET_GR ; 4
|
|
bit FULLGR ; 4
|
|
|
|
; jsr wait_until_keypressed
|
|
|
|
|
|
;=============================
|
|
; Load graphic page1
|
|
|
|
lda #$0c
|
|
sta BASH
|
|
lda #$00
|
|
sta BASL ; load image to $c00
|
|
|
|
lda #<bg_final_high
|
|
sta GBASL
|
|
lda #>bg_final_high
|
|
sta GBASH
|
|
jsr load_rle_gr
|
|
|
|
lda #0
|
|
sta DRAW_PAGE
|
|
|
|
jsr gr_copy_to_current
|
|
|
|
; GR part
|
|
bit PAGE0
|
|
|
|
; jsr wait_until_keypressed
|
|
|
|
|
|
;==============================
|
|
; setup graphics for vapor lock
|
|
;==============================
|
|
|
|
jsr vapor_lock ; 6
|
|
|
|
; vapor lock returns with us at beginning of hsync in line
|
|
; 114 (7410 cycles), so with 5070 lines to go
|
|
|
|
; so we have 5070 + 4550 = 9620 to kill
|
|
|
|
jsr gr_copy_to_current ; 6+ 9292
|
|
|
|
; now we have 322 left
|
|
|
|
; GR part
|
|
bit LORES ; 4
|
|
bit SET_GR ; 4
|
|
bit FULLGR ; 4
|
|
|
|
; 322 - 12 = 310
|
|
; - 3 for jmp
|
|
; 307
|
|
|
|
; Try X=9 Y=6 cycles=307
|
|
|
|
ldy #6 ; 2
|
|
loopA:
|
|
ldx #9 ; 2
|
|
loopB:
|
|
dex ; 2
|
|
bne loopB ; 2nt/3
|
|
|
|
dey ; 2
|
|
bne loopA ; 2nt/3
|
|
|
|
jmp display_loop ; 3
|
|
.align $100
|
|
|
|
|
|
;================================================
|
|
; Display Loop
|
|
;================================================
|
|
; each scan line 65 cycles
|
|
; 1 cycle each byte (40cycles) + 25 for horizontal
|
|
; Total of 12480 cycles to draw screen
|
|
; Vertical blank = 4550 cycles (70 scan lines)
|
|
; Total of 17030 cycles to get back to where was
|
|
|
|
; We want to alternate between page1 and page2 every 65 cycles
|
|
; vblank = 4550 cycles to do scrolling
|
|
|
|
|
|
; 2 + 48*( (4+2+25*(2+3)) + (4+2+23*(2+3)+4+5)) + 9)
|
|
; 48*[(6+125)-1] + [(6+115+10)-1]
|
|
|
|
display_loop:
|
|
|
|
;===================================
|
|
; HIRES PAGE0 for the top 152 lines
|
|
;===================================
|
|
|
|
; 152 * 65 = 9880
|
|
; -12 for HIRES/PAGE0 at top
|
|
; -5 for LORES+ldy+br fallthrough at bottom
|
|
; -132 for move_letters
|
|
; 9731
|
|
|
|
bit HIRES ; 4
|
|
bit PAGE0 ; 4
|
|
bit FULLGR ; 4
|
|
;===========
|
|
; 12
|
|
jsr move_letters ; 6+126
|
|
|
|
; Try X=242 Y=8 cycles=9729 R2
|
|
|
|
nop ; 2
|
|
|
|
|
|
ldy #8 ; 2
|
|
hgloop1:ldx #242 ; 2
|
|
hgloop2:dex ; 2
|
|
bne hgloop2 ; 2nt/3
|
|
dey ; 2
|
|
bne hgloop1 ; 2nt/3
|
|
|
|
bit LORES ; 4
|
|
|
|
|
|
;====================================================
|
|
; LORES PAGE0/PAGE1 alternating for the next 24 lines
|
|
;====================================================
|
|
|
|
|
|
ldy #12 ; *2=24 lines ; 2
|
|
|
|
; we set PAGE0 (4) then want to NOP (61) for a total of 65
|
|
bouter_loop:
|
|
bit PAGE0 ; 4
|
|
ldx #12 ; 65 cycles with PAGE0 ; 2
|
|
bpage0_loop: ; delay 61+bit
|
|
dex ; 2
|
|
bne bpage0_loop ; 2/3
|
|
;=============
|
|
; 6+(12*5)-1=65
|
|
|
|
; we set PAGE1 (4) as well as dey (2) and bne (3) then nop (55)
|
|
;
|
|
|
|
bit PAGE1 ; 4
|
|
ldx #11 ; 65 cycles with PAGE1 ; 2
|
|
bpage1_loop:
|
|
dex ; 2
|
|
bne bpage1_loop ; 2/3
|
|
;=============
|
|
; 6+(11*5)-1=60
|
|
|
|
dey ; 2
|
|
bne bouter_loop ; 2/3
|
|
;==============
|
|
; 5 to make 65
|
|
|
|
|
|
|
|
;=========================================================
|
|
; LORES PAGE0/PAGE1+TEXT alternating for the next 16 lines
|
|
;=========================================================
|
|
|
|
|
|
ldy #8 ; *2=16 lines ; 2
|
|
|
|
; we set PAGE0 (4) then want to NOP (61) for a total of 65
|
|
couter_loop:
|
|
bit FULLGR ; 4
|
|
bit PAGE0 ; 4
|
|
ldx #5 ; 2
|
|
cpage0_loop:
|
|
dex ; 2
|
|
bne cpage0_loop ; 2/3
|
|
;=============
|
|
; 10+(5*5)-1=34
|
|
bit $1000 ; 4
|
|
bit $1000 ; 4
|
|
bit TEXTGR ; 4
|
|
bit $1000 ; 4
|
|
bit $1000 ; 4
|
|
bit $1000 ; 4
|
|
bit $1000 ; 4
|
|
lda DRAW_PAGE ; 3
|
|
|
|
; we set PAGE1 (4) as well as dey (2) and bne (3) then nop (55)
|
|
;
|
|
|
|
bit FULLGR ; 4
|
|
bit PAGE1 ; 4
|
|
ldx #5 ; 2
|
|
cpage1_loop:
|
|
dex ; 2
|
|
bne cpage1_loop ; 2/3
|
|
;=============
|
|
; 10+(5*5)-1=34
|
|
|
|
bit $1000 ; 4
|
|
bit $1000 ; 4
|
|
bit TEXTGR ; 4
|
|
|
|
bit $1000 ; 4
|
|
lda DRAW_PAGE ; 3
|
|
nop ; 2
|
|
lda DRAW_PAGE ; 3
|
|
nop ; 2
|
|
|
|
dey ; 2
|
|
bne couter_loop ; 2/3
|
|
;==============
|
|
; 5 to make 65
|
|
|
|
|
|
|
|
;======================================================
|
|
; We have 4550 cycles in the vblank, use them wisely
|
|
;======================================================
|
|
; 4550
|
|
; +1 fallthrough
|
|
; -2 for ldy in previous
|
|
; -35 call through jumptable
|
|
; -7 keyboard
|
|
; -3 jmp
|
|
; ========
|
|
; 4504
|
|
;========================
|
|
; each subunit should take 4504 cycles
|
|
|
|
firework_state_machine:
|
|
|
|
; if killing time, 16+19 = 35
|
|
; if not, 16+19 = 35
|
|
|
|
ldy STATE ; 3
|
|
inc FRAME ; 5
|
|
lda FRAME ; 3
|
|
and #$3 ; 2
|
|
beq kill_time ; 3
|
|
;===========
|
|
; 16
|
|
|
|
|
|
; Set up jump table that runs same speed on 6502 and 65c02
|
|
;-1
|
|
lda jump_table+1,y ; 4
|
|
pha ; 3
|
|
lda jump_table,y ; 4
|
|
pha ; 3
|
|
rts ; 6
|
|
|
|
;=============
|
|
; 19
|
|
|
|
kill_time:
|
|
|
|
; need 16 cycles nop
|
|
ldy STATE ; (nop) ; 3
|
|
ldy STATE ; (nop) ; 3
|
|
ldy STATE ; (nop) ; 3
|
|
ldy STATE ; (nop) ; 3
|
|
nop ; 2
|
|
nop ; 2
|
|
jmp action_stars ; 3
|
|
|
|
;=============
|
|
; 19
|
|
|
|
check_keyboard:
|
|
|
|
lda KEYPRESS ; 4
|
|
bpl no_keypress ; 3
|
|
jmp restart
|
|
no_keypress:
|
|
|
|
jmp display_loop ; 3
|
|
|
|
|
|
; Restart and toggle sound
|
|
restart:
|
|
; self mofifying code, flip from bit C030 to bit 0030
|
|
lda sound1+2
|
|
eor #$C0
|
|
sta sound1+2
|
|
|
|
; lda sound2+2
|
|
; eor #$C0
|
|
; sta sound2+2
|
|
|
|
lda sound3+2
|
|
eor #$C0
|
|
sta sound3+2
|
|
|
|
jmp setup_background
|
|
|
|
|
|
jump_table:
|
|
.word (action_launch_firework-1)
|
|
.word (action_move_rocket-1)
|
|
.word (action_start_explosion-1)
|
|
.word (action_continue_explosion-1)
|
|
.word (action_stall_rocket-1)
|
|
|
|
|
|
|
|
.include "state_machine.s"
|
|
.include "gr_hline.s"
|
|
.include "../asm_routines/gr_unrle.s"
|
|
.include "../asm_routines/keypress.s"
|
|
.include "gr_copy.s"
|
|
.include "random16.s"
|
|
.include "fw.s"
|
|
.include "hgr.s"
|
|
.include "vapor_lock.s"
|
|
.include "move_letters.s"
|
|
.include "delay_a.s"
|
|
|
|
background:
|
|
|
|
.include "background_final.inc"
|