mandel-6502/tables.js

function db(func) {
    let lines = [];
    for (let i = 0; i < 256; i += 16) {
        let items = [];
        for (let j = 0; j < 16; j++) {
            let x = i + j;
            items.push(func(x));
        }
        lines.push('    .byte ' + items.join(', '));
    }
    return lines.join('\n');
}

console.log(
`.segment "TABLES"

.export mul_lobyte
.export mul_hibyte
.export sqr_lobyte
.export sqr_hibyte

; (i * i) / 2 for the multiplier
.align 256
mul_lobyte:
${db((i) => ((i * i) >> 1) & 0xff)}

.align 256
mul_hibyte:
${db((i) => ((i * i) >> 9) & 0xff)}

; (i * i) for the plain squares
.align 256
sqr_lobyte:
${db((i) => (i * i) & 0xff)}

.align 256
sqr_hibyte:
${db((i) => ((i * i) >> 8) & 0xff)}

`);