mirror of
https://github.com/deater/dos33fsprogs.git
synced 2024-12-27 17:29:49 +00:00
302 lines
5.5 KiB
ArmAsm
302 lines
5.5 KiB
ArmAsm
; Missing scene
|
|
|
|
; Uses the 40x48d page1/page2 every-1-scanline pageflip mode
|
|
|
|
; by deater (Vince Weaver) <vince@deater.net>
|
|
|
|
missing_intro:
|
|
|
|
; we come into this at the very end of vblank
|
|
; we should be playing a frame of music every
|
|
; 17030 - 1243 = 15787 cycles or so
|
|
|
|
;===================
|
|
; init vars
|
|
|
|
; lda #0
|
|
; sta DRAW_PAGE
|
|
|
|
;=============================
|
|
; setup graphics code
|
|
|
|
jsr create_update_type1 ; now calls play_frame_compressed
|
|
|
|
; setup_rasterbars_page_smc=4
|
|
; lda #0
|
|
; sta setup_rasterbars_page_smc+1
|
|
; setup_rasterbars_offset_smc=2
|
|
lda #2
|
|
sta setup_rasterbars_offset_smc+1
|
|
; setup_rasterbars_bars_start_smc=16
|
|
lda #13
|
|
sta setup_rasterbars_bars_start_smc+1
|
|
; setup_rasterbars_bars_end_smc=48
|
|
lda #48
|
|
sta setup_rasterbars_bars_end_smc+1
|
|
; setup_rasterbars_start_addr1_smc:=#<(UPDATE_START+(13*49))
|
|
lda #<(UPDATE_START+(12*49))
|
|
sta setup_rasterbars_start_addr1_smc+1
|
|
; setup_rasterbars_start_addr2_smc:=#<(UPDATE_START+(13*49))
|
|
lda #>(UPDATE_START+(12*49))
|
|
sta setup_rasterbars_start_addr2_smc+1
|
|
|
|
jsr setup_rasterbars
|
|
|
|
; setup_rasterbars_page_smc=4
|
|
; lda #0
|
|
; sta setup_rasterbars_page_smc+1
|
|
; setup_rasterbars_offset_smc=2
|
|
lda #2
|
|
sta setup_rasterbars_offset_smc+1
|
|
; setup_rasterbars_bars_start_smc=16
|
|
lda #149
|
|
sta setup_rasterbars_bars_start_smc+1
|
|
; setup_rasterbars_bars_end_smc=48
|
|
lda #187
|
|
sta setup_rasterbars_bars_end_smc+1
|
|
; setup_rasterbars_start_addr1_smc:=#<(UPDATE_START+(149*49))
|
|
lda #<(UPDATE_START+(148*49))
|
|
sta setup_rasterbars_start_addr1_smc+1
|
|
; setup_rasterbars_start_addr2_smc:=#<(UPDATE_START+(149*49))
|
|
lda #>(UPDATE_START+(148*49))
|
|
sta setup_rasterbars_start_addr2_smc+1
|
|
|
|
jsr setup_rasterbars
|
|
|
|
|
|
jsr make_bars
|
|
|
|
;=============================
|
|
; Load graphic page0
|
|
|
|
lda #<k_low
|
|
sta GBASL
|
|
lda #>k_low
|
|
sta GBASH
|
|
lda #$c ; load to $c00
|
|
jsr load_rle_gr ; 2000
|
|
|
|
lda #4
|
|
sta DRAW_PAGE
|
|
|
|
jsr gr_copy_to_current ; copy to page1 ; 9292
|
|
|
|
; GR part
|
|
bit PAGE1
|
|
bit LORES ; 4
|
|
bit SET_GR ; 4
|
|
bit FULLGR ; 4
|
|
|
|
; jsr wait_until_keypressed
|
|
|
|
jsr play_frame_compressed
|
|
|
|
;=============================
|
|
; Load graphic page1
|
|
|
|
lda #<k_high
|
|
sta GBASL
|
|
lda #>k_high
|
|
sta GBASH
|
|
|
|
lda #$c
|
|
|
|
jsr load_rle_gr ; 2000
|
|
|
|
lda #0
|
|
sta DRAW_PAGE
|
|
|
|
jsr gr_copy_to_current ; 9292
|
|
|
|
; GR part
|
|
bit PAGE0
|
|
|
|
; jsr wait_until_keypressed
|
|
|
|
|
|
jsr play_frame_compressed
|
|
|
|
;==============================
|
|
; setup graphics for vapor lock
|
|
;==============================
|
|
|
|
jsr vapor_lock
|
|
|
|
; vapor lock returns with us at beginning of hsync in line
|
|
; 114 (7410 cycles), so with 5070 lines to go
|
|
|
|
; GR part
|
|
; bit LORES ; 4
|
|
bit SET_GR ; 4
|
|
; bit FULLGR ; 4
|
|
|
|
jsr gr_copy_to_current ; 6+ 9292
|
|
|
|
; 5070 + 4550 = 9620
|
|
; 9292
|
|
; 12
|
|
; 6
|
|
; ====
|
|
; 310
|
|
|
|
; Try X=9 Y=6 cycles=307R3
|
|
|
|
lda TEMP
|
|
|
|
ldy #6 ; 2
|
|
mloopA: ldx #9 ; 2
|
|
mloopB: dex ; 2
|
|
bne mloopB ; 2nt/3
|
|
dey ; 2
|
|
bne mloopA ; 2nt/3
|
|
|
|
; jmp missing_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
|
|
|
|
|
|
|
|
; want colors 01234567
|
|
; line 0: $X0 to $800
|
|
; line 1: $X1 to $400
|
|
; line 2: $X2
|
|
; line 3: $X3
|
|
; line 4: $4X
|
|
; line 5: $5X
|
|
; line 6: $6X
|
|
; line 7: $7X
|
|
|
|
missing_display_loop:
|
|
|
|
jsr $9800 ; update_type1
|
|
|
|
;======================================================
|
|
; We have 4550 cycles in the vblank, use them wisely
|
|
;======================================================
|
|
; do_nothing should be
|
|
; 4550
|
|
; -12 jsr/ret to update_type1
|
|
; - 8 check keypress
|
|
; -1243
|
|
;=============
|
|
; 3287
|
|
|
|
|
|
; blah, current code the tight loops are right at a page boundary
|
|
|
|
jsr play_frame_compressed ; 6+1237
|
|
|
|
do_nothing_missing:
|
|
|
|
; want 3287
|
|
|
|
; Try X=163 Y=4 cycles=3285R2
|
|
|
|
nop
|
|
|
|
ldy #4 ; 2
|
|
gloop1: ldx #163 ; 2
|
|
gloop2: dex ; 2
|
|
bne gloop2 ; 2nt/3
|
|
dey ; 2
|
|
bne gloop1 ; 2nt/3
|
|
|
|
|
|
lda FRAME_PLAY_PAGE ; 3
|
|
cmp #4 ; 2
|
|
bne missing_display_loop ; 3
|
|
|
|
; lda KEYPRESS ; 4
|
|
; bpl missing_display_loop ; 3
|
|
|
|
; lda TEMP ; 3
|
|
; nop ; 2
|
|
; jmp missing_display_loop ; 3
|
|
|
|
rts
|
|
|
|
;BAR_START = 2*8
|
|
BAR_START = (2*8)-3 ; 13
|
|
BAR_START2 = 152-3
|
|
|
|
; $9800 + (49*18) + 4 = $9800+886 = $9800+$376=$9b76 (9b72)
|
|
; $9800 + (49*152) = $9800+7448 = $9800+$1d18=$b518
|
|
|
|
make_bars:
|
|
|
|
lda #<bar_colors_top
|
|
sta INL
|
|
lda #>bar_colors_top
|
|
sta INH
|
|
|
|
lda #<(UPDATE_START+49*(BAR_START+2)+4)
|
|
sta OUTL
|
|
lda #>(UPDATE_START+49*(BAR_START+2)+4)
|
|
sta OUTH
|
|
|
|
|
|
|
|
jsr make_bars_entry
|
|
|
|
lda #<bar_colors_bottom
|
|
sta INL
|
|
lda #>bar_colors_bottom
|
|
sta INH
|
|
|
|
lda #<(UPDATE_START+49*(BAR_START2+2)+4)
|
|
sta OUTL
|
|
lda #>(UPDATE_START+49*(BAR_START2+2)+4)
|
|
sta OUTH
|
|
|
|
jsr make_bars_entry
|
|
|
|
rts
|
|
|
|
make_bars_entry:
|
|
|
|
ldy #0
|
|
|
|
make_bars_loop:
|
|
lda (INL),Y
|
|
sta (OUTL),Y
|
|
|
|
iny
|
|
lda OUTL
|
|
clc
|
|
adc #48 ; because y++
|
|
sta OUTL
|
|
lda OUTH
|
|
adc #0
|
|
sta OUTH
|
|
|
|
; cpy #32
|
|
tya
|
|
and #$1f
|
|
bne make_bars_loop
|
|
|
|
rts
|
|
|
|
bar_colors_top:
|
|
.byte $03,$0b,$0f,$0b,$30,$00,$00
|
|
.byte $00,$02,$06,$0f,$06,$20,$00,$00
|
|
.byte $00,$04,$0c,$0f,$0c,$40,$00,$00
|
|
.byte $00,$05,$07,$0f,$07,$50,$00,$00,$00,$00,$00
|
|
|
|
bar_colors_bottom:
|
|
.byte $01,$03,$0f,$03,$10,$00,$00
|
|
.byte $00,$08,$0d,$0f,$0d,$80,$00,$00
|
|
.byte $00,$0c,$0e,$0f,$0e,$c0,$00,$00
|
|
.byte $00,$09,$0d,$0f,$0d,$90,$00,$00,$00,$00,$00
|