mirror of
https://github.com/deater/dos33fsprogs.git
synced 2024-12-27 17:29:49 +00:00
304 lines
4.3 KiB
ArmAsm
304 lines
4.3 KiB
ArmAsm
; Display Starring w People
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; 2nd/3rd = split low/hires w tengwar wipe at bottom
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starring_people:
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;===================
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; init screen
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bit KEYRESET
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;===================
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; copy to page3
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lda #0
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sta DRAW_PAGE
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jsr gr_copy_to_current
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; GR part
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bit PAGE0
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;==============================
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; setup graphics for vapor lock
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;==============================
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jsr vapor_lock ; 6
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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
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jsr gr_copy_to_current ; 6+ 9292
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; now we have 322 left
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; GR part
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bit LORES ; 4
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bit SET_GR ; 4
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bit FULLGR ; 4
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; 322 - 12 = 310
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; - 3 for jmp
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; 307
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; Try X=9 Y=6 cycles=307
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ldy #6 ; 2
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sploopA:ldx #9 ; 2
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sploopB:dex ; 2
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bne sploopB ; 2nt/3
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dey ; 2
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bne sploopA ; 2nt/3
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jmp sp_begin_loop
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.align $100
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;================================================
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; Starring People Loop
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;================================================
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; each scan line 65 cycles
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; 1 cycle each byte (40cycles) + 25 for horizontal
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; Total of 12480 cycles to draw screen
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; Vertical blank = 4550 cycles (70 scan lines)
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; Total of 17030 cycles to get back to where was
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; G00000000000000000000 H0000000000000000000000
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sp_begin_loop:
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sp_display_loop:
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ldy #148
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sp_outer_loop:
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bit LORES ; 4
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lda #7 ; 2
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jsr delay_a ; 25+7 = 32
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;===========
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; 38
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bit HIRES ; 4
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nop ; 2
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nop ; 2
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nop ; 2
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lda $0 ; 3
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lda $0 ; 3
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lda $0 ; 3
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lda $0 ; 3
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;============
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; 22
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dey ; 2
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bne sp_outer_loop ; 3
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; -1
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bit LORES ; 4
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; want to kill 44*65 -3 = 2857
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;======================================================
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; We have 4550 cycles in the vblank, use them wisely
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;======================================================
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; do_nothing should be 4550
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; +2857 fallthrough from above
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; -10 keypress
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; -2 ldy at top
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; ===========
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; 7395
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; Try X=18 Y=77 cycles=7393 R2
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nop
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ldy #77 ; 2
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sploop1:ldx #18 ; 2
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sploop2:dex ; 2
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bne sploop2 ; 2nt/3
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dey ; 2
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bne sploop1 ; 2nt/3
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lda KEYPRESS ; 4
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bpl sp_no_keypress ; 3
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jmp sp_start_over
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sp_no_keypress:
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jmp sp_display_loop ; 3
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sp_start_over:
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bit KEYRESET ; clear keypress ; 4
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rts ; 6
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setup_people_fs:
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;===================
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; init vars
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lda #0
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sta DRAW_PAGE
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;=============================
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; Load graphic hgr
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lda #<fs_hgr
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sta LZ4_SRC
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lda #>fs_hgr
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sta LZ4_SRC+1
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lda #<(fs_hgr_end-8) ; skip checksum at end
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sta LZ4_END
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lda #>(fs_hgr_end-8) ; skip checksum at end
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sta LZ4_END+1
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lda #<$2000
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sta LZ4_DST
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lda #>$2000
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sta LZ4_DST+1
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jsr lz4_decode
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;=============================
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; Load graphic page0
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lda #$0c
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sta BASH
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lda #$00
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sta BASL ; load image to $c00
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lda #<fs
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sta GBASL
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lda #>fs
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sta GBASH
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jsr load_rle_gr
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lda #4
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sta DRAW_PAGE
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jsr gr_copy_to_current ; copy to page1
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; GR part
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bit PAGE1
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bit LORES ; 4
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bit SET_GR ; 4
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bit FULLGR ; 4
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;=============================
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; Load graphic page1
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lda #$0c
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sta BASH
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lda #$00
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sta BASL ; load image to $c00
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lda #<fs
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sta GBASL
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lda #>fs
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sta GBASH
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jsr load_rle_gr
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rts
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setup_people_deater:
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;===================
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; init vars
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lda #0
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sta DRAW_PAGE
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;=============================
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; Load graphic hgr
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lda #<deater_hgr
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sta LZ4_SRC
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lda #>deater_hgr
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sta LZ4_SRC+1
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lda #<(deater_hgr_end-8) ; skip checksum at end
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sta LZ4_END
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lda #>(deater_hgr_end-8) ; skip checksum at end
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sta LZ4_END+1
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lda #<$2000
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sta LZ4_DST
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lda #>$2000
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sta LZ4_DST+1
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jsr lz4_decode
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;=============================
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; Load graphic page0
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lda #$0c
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sta BASH
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lda #$00
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sta BASL ; load image to $c00
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lda #<deater
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sta GBASL
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lda #>deater
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sta GBASH
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jsr load_rle_gr
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lda #4
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sta DRAW_PAGE
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jsr gr_copy_to_current ; copy to page1
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; GR part
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bit PAGE1
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bit LORES ; 4
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bit SET_GR ; 4
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bit FULLGR ; 4
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;=============================
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; Load graphic page1
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lda #$0c
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sta BASH
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lda #$00
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sta BASL ; load image to $c00
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lda #<deater
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sta GBASL
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lda #>deater
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sta GBASH
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jsr load_rle_gr
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rts
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.include "fs.inc"
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.include "deater.inc"
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fs_hgr:
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.incbin "FS_HGRC.BIN.lz4",11
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fs_hgr_end:
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deater_hgr:
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.incbin "DEATER_HGRC.BIN.lz4",11
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deater_hgr_end:
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