mirror of
https://github.com/deater/dos33fsprogs.git
synced 2024-06-26 00:29:29 +00:00
143 lines
2.2 KiB
ArmAsm
143 lines
2.2 KiB
ArmAsm
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;=====================================
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; print the intro message for level1
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;=====================================
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intro_level1:
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lda #<level1_preview_lzsa
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sta getsrc_smc+1 ; LZSA_SRC_LO
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lda #>level1_preview_lzsa
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sta getsrc_smc+2 ; LZSA_SRC_HI
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lda #$20
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jsr decompress_lzsa2_fast
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; clear text screen
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jsr clear_all
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; print non-inverse
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jsr set_normal
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; print messages
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lda #<level1_intro_text
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sta OUTL
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lda #>level1_intro_text
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sta OUTH
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; print the text
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ldx #8
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text_loop:
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jsr move_and_print
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dex
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bne text_loop
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bit KEYRESET
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lda APPLEII_MODEL
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cmp #'E'
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bne intro_not_iie
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jmp split_screen_iie
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intro_not_iie:
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; wait until keypress
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jsr wait_until_keypress
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rts
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level1_intro_text:
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.byte 0, 8,"LEVEL 1",0
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.byte 15, 8,"JUST DIG!",0
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.byte 9,12,"NUMBER OF LEMMINGS 10",0
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.byte 12,14,"10% TO BE SAVED",0
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.byte 12,16,"RELEASE RATE 50",0
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.byte 13,18,"TIME 5 MINUTES",0
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.byte 15,20,"RATING FUN",0
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.byte 8,23,"PRESS RETURN TO CONINUE",0
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.byte 0, 8,"LEVEL 5",0
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.byte 15, 8,"YOU NEED BASHERS THIS TIME",0
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.byte 9,12,"NUMBER OF LEMMINGS 50",0
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.byte 12,14,"10% TO BE SAVED",0
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.byte 12,16,"RELEASE RATE 50",0
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.byte 13,18,"TIME 5 MINUTES",0
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.byte 15,20,"RATING FUN",0
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.byte 8,23,"PRESS RETURN TO CONINUE",0
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.align $100
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; split screen?
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split_screen_iie:
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; wait for vblank on IIe
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; positive? during vblank
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wait_vblank_iie:
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lda VBLANK
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bmi wait_vblank_iie ; wait for positive (in vblank)
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wait_vblank_done_iie:
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lda VBLANK ; wait for negative (vlank done)
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bpl wait_vblank_done_iie
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;
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split_loop:
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;===========================
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; hires for 64 lines
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; each line 65 cycles (25 hblank+40 bytes)
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bit HIRES ; 4
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bit SET_GR ; 4
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; (64*65)-8 = 4160-8 = 4152
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; Try X=91 Y=9 cycles=4150
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nop ; delay two more
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ldy #9 ; 2
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loop1: ldx #91 ; 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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bne loop1 ; 2nt/3
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; text for 128 lines + horizontal blank
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; vblank = 4550 cycles
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; (128*65)+4550-15 = 8320+4550-15 = 12855
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bit LORES ; 4
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bit SET_TEXT ; 4
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; Try X=150 Y=17 cycles=12853
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nop ; 2
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ldy #17 ; 2
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loop3: ldx #150 ; 2
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loop4: dex ; 2
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bne loop4 ; 2nt/3
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dey ; 2
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bne loop3 ; 2nt/3
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lda KEYPRESS ; 4
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bpl split_loop ; 2nt/3t
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rts
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