33 lines
648 B
JavaScript
33 lines
648 B
JavaScript
function db(func) {
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let lines = [];
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for (let i = 0; i < 256; i += 16) {
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let items = [];
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for (let j = 0; j < 16; j++) {
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let x = i + j;
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items.push(func(x));
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}
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lines.push(' .byte ' + items.join(', '));
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}
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return lines.join('\n');
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}
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console.log(
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`.segment "TABLES"
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.export mul_lobyte256
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.export mul_hibyte256
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.export mul_hibyte512
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.align 256
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mul_lobyte256:
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${db((x) => Math.round(x * x / 2) & 0xff)}
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.align 256
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mul_hibyte256:
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${db((x) => (Math.round(x * x / 2) >> 8) & 0xff)}
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.align 256
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mul_hibyte512:
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${db((x) => (Math.round((x + 256) * (x + 256) / 2) >> 8) & 0xff)}
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`);
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