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xmas2018: more cleanup, more asserts, more timing

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This commit is contained in:
Vince Weaver 2018-12-21 10:30:10 -05:00
parent 980e89c315
commit d0cee7e602
8 changed files with 43 additions and 116 deletions
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9
xmas_2018/Makefile
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@ -27,10 +27,17 @@ xmas2018.o: xmas2018.s \
vapor_lock.s delay_a.s wait_keypress.s gr_putsprite.s \
play_music.s mockingboard.s rts.s \
wreath.s wreath.img.lz4 sprites.inc \
ball.s ball.img.lz4 greets.raw.lz4 gr_scroll.s \
ball.s ball.img.lz4 greets.raw.lz4t gr_scroll.s \
merry.s merry.img.lz4
ca65 -o xmas2018.o xmas2018.s -l xmas2018.lst
#####
greets.raw.lz4t: greets.raw.lz4
dd if=greets.raw.lz4 of=greets.raw.lz4t bs=1 skip=11
truncate greets.raw.lz4t -s -8
####
MUSIC.lz4t: MUSIC.lz4

8
xmas_2018/ball.s
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@ -36,9 +36,9 @@ ball:
lda #>greets
sta LZ4_SRC+1
lda #<(greets_end-8) ; skip checksum at end
lda #<(greets_end)
sta LZ4_END
lda #>(greets_end-8) ; skip checksum at end
lda #>(greets_end)
sta LZ4_END+1
lda #<$800
@ -174,7 +174,7 @@ done_framing:
lda FRAMEH ; 3
cmp #14 ; length of song? ; 2
cmp #13 ; length of song? ; 2
beq ball_done ; 3
; -1
;===============
@ -244,5 +244,5 @@ ball_done:
.include "gr_scroll.s"
greets:
.incbin "greets.raw.lz4",11
.incbin "greets.raw.lz4t"
greets_end:

3
xmas_2018/gr_offsets.s
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@ -2,3 +2,6 @@ gr_offsets:
.word $400,$480,$500,$580,$600,$680,$700,$780
.word $428,$4a8,$528,$5a8,$628,$6a8,$728,$7a8
.word $450,$4d0,$550,$5d0,$650,$6d0,$750,$7d0
gr_offsets_end:
.assert >gr_offsets = >gr_offsets_end, error, "gr_offsets crosses page"

109
xmas_2018/merry.s
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@ -4,6 +4,14 @@
merry:
;====================================================
; ensure we have proper graphics mode (page1 visible)
bit HIRES ; 4
bit SET_GR ; 4
bit FULLGR ; 4
bit PAGE1 ; 4
;===================
; init vars
@ -15,89 +23,13 @@ merry:
; Load graphic hgr -- already loaded at $6000
;==============================
; 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
; FIXME: clear page0/page1 screens
; jsr gr_copy_to_current ; 6+ 9292
; now we have 322 left
; GR part
bit HIRES ; 4
bit SET_GR ; 4
bit FULLGR ; 4
bit PAGE1 ; 4
; 9620
; -12 mode set
; - 3 for jmp
;=======
; 9605
; Try X=136 Y=14 cycles=9605
; ldy #14 ; 2
;meloopA:ldx #136 ; 2
;meloopB:dex ; 2
; bne meloopB ; 2nt/3
; dey ; 2
; bne meloopA ; 2nt/3
; jmp merry_begin_loop
;.align $100
;================================================
; Merry Christmas 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
merry_begin_loop:
merry_begin:
merry_display_loop:
; 192 lines of hires page1
; (192*65) = 12480
; Try X=24 Y=99 cycles=12475 R5
; lda $0
; nop
; ldy #99 ; 2
;meloopE:ldx #24 ; 2
;meloopF:dex ; 2
; bne meloopF ; 2nt/3
; dey ; 2
; bne meloopE ; 2nt/3
;======================================================
; We have 4550 cycles in the vblank, use them wisely
;======================================================
; do_nothing should be 4550
; -10 keypress
; ===========
; 4540
; cli ; start music interrupt
cli ; start music interrupt
; jsr play_music ; 6+1032
@ -114,29 +46,10 @@ merry_display_loop:
sta scroll_hgr_smc+1
jsr scroll_hgr_left
; Try X=9 Y=89 cycles=4540
; ldy #89 ; 2
;meloop1:ldx #9 ; 2
;meloop2:dex ; 2
; bne meloop2 ; 2nt/3
; dey ; 2
; bne meloop1 ; 2nt/3
; no keypress = 10+(24) = 34
bit KEYRESET ; clear keypress ; 4
me_keyloop:
lda KEYPRESS ; 4
bpl me_keyloop ; 3
; -1
; jmp me_handle_keypress ; 3
me_no_keypress:
; jmp merry_display_loop ; 3
sei ; disable interrupts/music
me_handle_keypress:
bit KEYRESET ; clear keypress ; 4
rts ; 6

2
xmas_2018/mockingboard.s
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@ -156,7 +156,7 @@ interrupt_handler:
bit $C404 ; clear 6522 interrupt by reading T1C-L ; 4
; jsr play_music
jsr play_music
pla
tay ; restore Y

12
xmas_2018/sprites.inc
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@ -11,7 +11,7 @@ wide_flame0:
.byte $2,$3
.byte $dd,$dd
.byte $dd,$dd
.byte $dd,$dd
.byte $79,$79
; = 33 + Y*(51+31*X) = 33 + 3*(51+62) = 372
wide_flame1:
@ -25,14 +25,14 @@ wide_flame2:
.byte $2,$3
.byte $dd,$dd
.byte $dd,$dd
.byte $99,$99
.byte $79,$79
; = 33 + Y*(51+31*X) = 33 + 3*(51+62) = 372
wide_flame3:
.byte $2,$3
.byte $dd,$dd
.byte $dd,$dd
.byte $d9,$d9
.byte $dd,$9d
.byte $79,$79
; = 33 + Y*(51+31*X) = 33 + 3*(51+62) = 372
empty:
@ -53,14 +53,14 @@ flame1:
.byte $1,$3
.byte $dd
.byte $dd
.byte $99
.byte $9d
; = 33 + Y*(51+31*X) = 33 + 3*(51+31) = 279
flame2:
.byte $1,$3
.byte $dd
.byte $dd
.byte $d9
.byte $99
; = 33 + Y*(51+31*X) = 33 + 3*(51+31) = 279
flame3:

2
xmas_2018/wreath.s
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@ -325,7 +325,7 @@ wrloop2:dex ; 2
lda FLAME1 ; 3
cmp #15 ; length of song? ; 2
cmp #16 ; length of song? ; 2
beq wreath_done ; 3
; -1
;===============

14
xmas_2018/xmas2018.s
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@ -175,21 +175,25 @@ game_over_man:
jmp game_over_man
; Things included here should be aligned
; as they are called during cycle-counting
.align $100
.include "wreath.s"
.include "ball.s"
.include "merry.s"
.include "lz4_decode.s"
.include "rts.s"
.include "gr_offsets.s"
.include "gr_hline.s"
.include "gr_fast_clear.s"
.include "vapor_lock.s"
.include "delay_a.s"
.include "wait_keypress.s"
.include "gr_putsprite.s"
.include "delay_a.s"
.include "play_music.s"
; Things here alignment doesn't matter
.include "wait_keypress.s"
.include "merry.s"
.include "lz4_decode.s"
.include "rts.s"
; filename to open is 30-character Apple text:
wreath_filename: ; .byte "WREATH.LZ4",0
.byte 'W'|$80,'R'|$80,'E'|$80,'A'|$80,'T'|$80,'H'|$80,'.'|$80,'L'|$80