mirror of
https://github.com/deater/dos33fsprogs.git
synced 2024-11-16 08:05:31 +00:00
209 lines
3.5 KiB
ArmAsm
209 lines
3.5 KiB
ArmAsm
; Display a 40x48d lo-res image
|
|
|
|
; Uses the 40x48d page1/page2 every-1-scanline pageflip mode
|
|
|
|
; by deater (Vince Weaver) <vince@deater.net>
|
|
|
|
|
|
end_book:
|
|
|
|
; cli
|
|
|
|
;===================
|
|
; init screen
|
|
|
|
bit PAGE0
|
|
bit SET_TEXT
|
|
lda #' '+$80
|
|
sta clear_all_color+1
|
|
jsr gr_clear_all
|
|
|
|
;===================
|
|
; init vars
|
|
|
|
lda #0
|
|
sta DRAW_PAGE
|
|
lda #255
|
|
sta FRAMEL
|
|
|
|
;===================
|
|
; setup graphics
|
|
|
|
jsr create_update_type1
|
|
|
|
|
|
;======================
|
|
; print message
|
|
|
|
lda #<read_book_text
|
|
sta OUTL
|
|
|
|
lda #>read_book_text
|
|
sta OUTH
|
|
|
|
jsr move_and_print
|
|
jsr move_and_print
|
|
|
|
; lda #200
|
|
; jsr long_wait
|
|
; lda #200
|
|
; jsr long_wait
|
|
|
|
; sei
|
|
|
|
;urgh: jmp urgh
|
|
|
|
lda #0
|
|
sta FRAME_PLAY_OFFSET
|
|
sta FRAME_PLAY_PAGE
|
|
sta FRAME_OFFSET
|
|
sta FRAME_PAGE
|
|
jsr update_pt3_play
|
|
|
|
; setup 9 frames
|
|
jsr pt3_write_lc_9
|
|
|
|
;=============================
|
|
; Load graphic page0
|
|
|
|
lda #<book_low
|
|
sta GBASL
|
|
lda #>book_low
|
|
sta GBASH
|
|
|
|
lda #$c ; load image to $c00
|
|
|
|
jsr load_rle_gr
|
|
|
|
lda #4
|
|
sta DRAW_PAGE
|
|
|
|
jsr gr_copy_to_current ; copy to page1
|
|
|
|
jsr play_frame_compressed ; 6+1237
|
|
|
|
; GR part
|
|
bit PAGE1
|
|
bit LORES ; 4
|
|
bit SET_GR ; 4
|
|
bit FULLGR ; 4
|
|
|
|
;=============================
|
|
; Load graphic page1
|
|
|
|
lda #<book_high
|
|
sta GBASL
|
|
lda #>book_high
|
|
sta GBASH
|
|
lda #$c ; load image to $c00
|
|
jsr load_rle_gr
|
|
|
|
lda #0
|
|
sta DRAW_PAGE
|
|
|
|
jsr gr_copy_to_current
|
|
|
|
jsr play_frame_compressed ; 6+1237
|
|
|
|
; GR part
|
|
bit PAGE0
|
|
|
|
;==============================
|
|
; 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
|
|
|
|
; now we have 322 left
|
|
|
|
; 322 - 12 = 310
|
|
; - 3 for jmp
|
|
; 307
|
|
|
|
; Try X=9 Y=6 cycles=307
|
|
|
|
ldy #6 ; 2
|
|
loopQ: ldx #9 ; 2
|
|
loopR: dex ; 2
|
|
bne loopR ; 2nt/3
|
|
dey ; 2
|
|
bne loopQ ; 2nt/3
|
|
|
|
jmp book_loop ; 3
|
|
;.align $100
|
|
|
|
|
|
;================================================
|
|
; Display Loop
|
|
;================================================
|
|
; We want to alternate between page1 and page2 every 65 cycles
|
|
; vblank = 4550 cycles to do scrolling
|
|
|
|
book_loop:
|
|
|
|
jsr $9800 ; cycle-counted page0/page1 flip code
|
|
|
|
;======================================================
|
|
; We have 4550 cycles in the vblank, use them wisely
|
|
;======================================================
|
|
; do_nothing should be
|
|
; 4550
|
|
; -12 -- enter/leave flip code
|
|
; -10 -- keypress code
|
|
; -1243
|
|
; =======
|
|
; 3285 cycles
|
|
|
|
jsr play_frame_compressed ; 6+1237
|
|
|
|
;=================================
|
|
; do nothing
|
|
;=================================
|
|
; and take 3285
|
|
|
|
book_do_nothing:
|
|
|
|
; Try X=163 Y=4 cycles=3285
|
|
|
|
ldy #4 ; 2
|
|
bloop1:
|
|
ldx #163 ; 2
|
|
bloop2:
|
|
dex ; 2
|
|
bne bloop2 ; 2nt/3
|
|
|
|
dey ; 2
|
|
bne bloop1 ; 2nt/3
|
|
|
|
lda FRAME_PLAY_PAGE ; 3
|
|
nop
|
|
cmp #2 ; 2 (decoding takes most of a page)
|
|
bne book_loop ; 3
|
|
|
|
; dec FRAMEL ; 5
|
|
; nop ; 2
|
|
; bne book_loop ; 3
|
|
|
|
; lda TEMP ; 3
|
|
; lda KEYPRESS ; 4
|
|
; bpl book_loop ; 3
|
|
|
|
rts ; 6
|
|
|
|
|
|
|
|
|
|
read_book_text:
|
|
.byte 2,11,"QUIET AT LAST",0
|
|
.byte 2,12,"FINALLY I CAN READ MY BOOK IN PEACE",0
|