mirror of
https://github.com/deater/dos33fsprogs.git
synced 2025-01-27 23:30:56 +00:00
158 lines
2.2 KiB
ArmAsm
158 lines
2.2 KiB
ArmAsm
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; Print-shop Style THINKING
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; by Vince `deater` Weaver <vince@deater.net>
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.include "zp.inc"
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.include "hardware.inc"
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COL = $F0
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XSTART = $F1
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XSTOP = $F2
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YSTART = $F3
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YSTOP = $F4
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OFFSET = $F5
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CURRENT = $F6
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YY = $F7
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XS = $F8
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thinking:
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jsr SETGR ; set lo-res 40x40 mode
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; A=$D0 afterward
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big_loop:
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; COL value doesn't matter?
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lda #0
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sta YSTART
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sta XSTART
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lda #20
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sta YSTOP
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asl
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sta XSTOP
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box_loop:
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ldx YSTART
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yloop:
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txa
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jsr GBASCALC ; take Y-coord/2 in A, put address in GBASL/H ( a trashed, C clear)
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lda COL
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and #$7
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tay
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lda color_lookup,Y
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sta COLOR
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;======================
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;======================
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; inner loop begin
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; Y=xx
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; X=yy
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ldy XSTART
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xloop:
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stx XS
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tya
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lsr
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lsr
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lsr
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tax
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lda thinking_data,X
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sta CURRENT
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tya
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and #$7
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tax
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bloop:
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ror CURRENT
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dex
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bne bloop
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ldx XS
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bcs dont_draw
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lda COLOR
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sta (GBASL),Y
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dont_draw:
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iny
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cpy XSTOP
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bne xloop
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; inner loop end
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;======================
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;======================
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inx
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cpx YSTOP
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bne yloop
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inc COL
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inc XSTART
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dec XSTOP
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inc YSTART
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dec YSTOP
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lda YSTOP
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cmp #10
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bne box_loop
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;==========================
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; done drawing rainbow box
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;==========================
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;==========================
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; wait a bit
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;==========================
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lda #255
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jsr WAIT
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;===================
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; increment color
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; after loop we are +10
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; so -1 actually means increment 1 (because we mod 8 it)
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dec COL
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jmp big_loop
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;0 1 2 3 3
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;01234567|89012345|67890123|45678901|23456789
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; ***** *| * * * | * * |* * * |* ***
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; * *| * * **| * * *| * ** |* * *
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; * *| * * **| * * * | * ** |* *
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; * *|*** * * |* * ** | * * * |* *
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; * *| * * * | ** * * | * * *|* * **
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; * *| * * * | ** * *| * * *|* * *
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; * *| * * * | * * |* * * |* ****
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;
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; 7*5 bytes = 35 bytes
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thinking_data:
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.byte $BE,$54,$14,$15,$39
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.byte $88,$D4,$94,$34,$45
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.byte $88,$D4,$54,$34,$05
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.byte $88,$57,$35,$54,$05
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.byte $88,$54,$56,$94,$65
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.byte $88,$54,$96,$94,$45
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.byte $88,$54,$14,$15,$79
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color_lookup:
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; magenta, pink, orange, yellow, lgreen, aqua, mblue, lblue
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.byte $33,$BB,$99,$DD,$CC,$EE,$66,$77
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; for apple II bot entry at $3F5
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jmp thinking
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