21 lines
658 B
Plaintext
21 lines
658 B
Plaintext
// SPDX-FileCopyrightText: Chris Pressey, the author of this work, has dedicated it to the public domain.
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// For more information, please refer to <https://unlicense.org/>
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// SPDX-License-Identifier: Unlicense
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// Displays 256 hearts at the top of the Commodore 64's screen.
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// Define where the screen starts in memory:
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byte table[256] screen @ 1024
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define main routine
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// These are the values that will be written to by this routine:
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trashes a, x, z, n, screen
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{
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ld x, 0
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ld a, 83 // 83 = screen code for heart
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repeat {
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st a, screen + x
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inc x
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} until z // this flag will be set when x wraps around from 255 to 0
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}
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