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xmas2019: closer
This commit is contained in:
Vince Weaver
parent
daf6c3ff48
commit
ef9d0347d5
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@ -3,6 +3,7 @@ include ../Makefile.inc
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DOS33 = ../dos33fs-utils/dos33
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B2D = ../bmp2dhr/b2d
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PNG_TO_40x48D = ../gr-utils/png_to_40x48d
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PNG_TO_40x96 = ../gr-utils/png_to_40x96
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all: xmas2019.dsk sine_table
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@ -41,21 +42,16 @@ XMAS2019: xmas2019.o
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ld65 -o XMAS2019 xmas2019.o -C ../linker_scripts/apple2_4000.inc
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xmas2019.o: xmas2019.s \
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delay_a.s vapor_lock.s
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#gr_hline.s state_machine.s move_letters.s
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delay_a.s vapor_lock.s message.inc gr_unrle.s
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ca65 -o xmas2019.o xmas2019.s -l xmas2019.lst
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#####
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#background_final.inc: background_final.png
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# $(PNG_TO_40x48D) asm background_final.png bg_final > background_final.inc
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message.inc: message.png
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$(PNG_TO_40x96) asm message.png message > message.inc
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####
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FIREWORKS.BAS: fireworks.bas
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../asoft_basic-utils/tokenize_asoft < fireworks.bas > FIREWORKS.BAS
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####
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HELLO: hello.bas
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137
xmas_2019/gr_unrle.s
Normal file
137
xmas_2019/gr_unrle.s
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@ -0,0 +1,137 @@
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;=================
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; load RLE image
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;=================
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; Output is A:00 (assume page aligned)
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; Input is in GBASH/GBASL
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; format: first byte=xsize
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; A0,X,Y means run of X bytes of Y color
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; A1 means end of file
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; A2-AF,X means run of low nibble, X color
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; if high nibble not A: just display color
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; CV = current Y
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; CH = max xsize (usually 40)
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; TEMP = page
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; TEMPY= current X
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; RECALC, I changed gr_offsets
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; 82 + 10 +
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; special short: 38+7+ 27+ 27*run +5+2
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; special long: 38+7+24+27+ 27*run +5+2
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; nospecial: 38+6+19+(cross line*58)+5+2
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load_rle_gr:
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sec ; 2
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sbc #4 ; adjust page to write to ; 2
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; to match gr_offsets
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sta TEMP ; 3
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ldy #$0 ; init Y to 0 ; 2
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sty CV ; 3
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jsr load_and_increment ; load xsize ; 6+19
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sta CH ; 3
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jsr unrle_new_y ; 6+36
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;============
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; 82
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rle_loop:
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jsr load_and_increment ; 6+19
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tax ; 2
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cmp #$A1 ; if 0xa1 ; 2
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beq rle_done ; we are done ; 3
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; -1
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and #$f0 ; mask ; 2
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cmp #$a0 ; see if special AX ; 2
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beq decompress_special ; 3
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;===========
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; 38
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; -1
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; not special, just color
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txa ; put color back in A ; 2
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ldx #$1 ; only want to print 1 ; 2
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bne decompress_run ; bra ; 3
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decompress_special:
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txa ; put read value back in A ; 2
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and #$0f ; check if was A0 ; 2
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bne decompress_color ; if A0 need to read run, color ; 3
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;===
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; 7
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decompress_large: ; -1
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jsr load_and_increment ; run length now in A ; 6+19
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decompress_color:
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tax ; put runlen into X ; 2
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jsr load_and_increment ; get color into A ; 6+19
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decompress_run:
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rle_run_loop:
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sta (BASL),y ; write out the value ; 6
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inc BASL ; 5
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dec TEMPY ; 5
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bne rle_not_eol ; if less then keep going ; 3
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;====
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; 19
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; -1
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; if here, we are > max_X
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inc CV ; 5
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pha ; 3
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jsr unrle_new_y ; 6+36
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pla ; 4
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;===
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;53
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rle_not_eol:
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dex ; 2
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bne rle_run_loop ; if not zero, keep looping ; 3
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;==
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; 5
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; -1
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beq rle_loop ; and branch always ; 3
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rle_done:
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lda #$15 ; move cursor somewhere sane ; 2
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sta CV ; 3
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rts ; 6
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;========================
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; common case = 19
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load_and_increment:
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lda (GBASL),Y ; 5+
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inc GBASL ; 5
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bne lai_no_oflo ; 3
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; -1
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inc GBASH ; 5
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lai_no_oflo:
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rts ; 6
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;========================
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; common case = 36
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unrle_new_y:
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ldy CV ; 3
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lda gr_offsets_l,Y ; 4+
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sta BASL ; 3
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lda gr_offsets_h,Y ; 4+
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clc ; 2
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adc TEMP ; adjust for page ; 3
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sta BASH ; 3
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lda CH ; 3
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sta TEMPY ; 3
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ldy #0 ; 2
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rts ; 6
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;===========
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; 36
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@ -27,6 +27,7 @@ CMASK2 = $F3
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WHICH_Y = $F4
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FRAME = $F5
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TEMPY = $F6
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TEMP = $F7
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HGR = $F3E2
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@ -72,6 +73,28 @@ snow_init_loop:
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bpl snow_init_loop
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;=============================
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; Load graphic page0
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lda #<message_low
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sta GBASL
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lda #>message_low
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sta GBASH
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lda #$c
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jsr load_rle_gr
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;=============================
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; Load graphic page1
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lda #<message_high
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sta GBASL
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lda #>message_high
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sta GBASH
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lda #$10
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jsr load_rle_gr
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;==========================================================
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;==========================================================
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; Vapor Lock
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@ -82,21 +105,26 @@ snow_init_loop:
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; vapor lock returns with us at beginning of hsync in line
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; 114 (7410 cycles), so with 5070 lines to go to vblank
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; then we want another 4050 cycles to end, so 9120
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; then we want another 4550 cycles to end, so 9620
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; 9620
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; -9298
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;=======
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; 322
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jsr gr_copy_to_current ; 6+ 9292
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;=================================
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; do nothing
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;=================================
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; and take 9120 cycles to do it
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; and take 322 cycles to do it
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do_nothing:
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; Try X=139 Y=13 cycles=9114R6
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; Try X=1 Y=29 cycles=320 R2
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nop
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nop
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nop
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ldy #13 ; 2
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loop1: ldx #139 ; 2
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ldy #29 ; 2
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loop1: ldx #1 ; 2
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loop2: dex ; 2
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bne loop2 ; 2nt/3
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dey ; 2
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@ -105,8 +133,9 @@ loop2: dex ; 2
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;=============================================
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;=============================================
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;=============================================
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display_loop:
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@ -134,8 +163,19 @@ bloop2: dex ; 2
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ldx #127 ; 2
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middle_loop:
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bit HIRES ; 4
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; 27
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lda COLOR ; 3
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lda COLOR ; 3
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lda COLOR ; 3
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lda COLOR ; 3
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lda COLOR ; 3
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lda COLOR ; 3
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lda COLOR ; 3
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lda COLOR ; 3
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bit LORES ; 4
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@ -154,13 +194,6 @@ middle_loop:
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lda COLOR
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lda COLOR ; 3
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lda COLOR ; 3
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lda COLOR ; 3
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lda COLOR ; 3
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lda COLOR ; 3
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lda COLOR ; 3
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lda COLOR ; 3
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lda COLOR ; 3
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dex ; 2
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@ -734,3 +767,12 @@ pixel_lookup:
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.include "vapor_lock.s"
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.include "delay_a.s"
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.include "random16.s"
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.include "message.inc"
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.include "gr_unrle.s"
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.include "gr_copy.s"
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; include music
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.align $100
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.incbin "./music/jingle.pt3"
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