33 lines
666 B
JavaScript
33 lines
666 B
JavaScript
const fs = require('fs');
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let prg = fs.readFileSync("test_apple1.prg");
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prg = prg.slice(2); // skip header
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let s = appledump(prg, 0x4000);
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console.log(s);
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function appledump(bytes, start) {
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let rows=16;
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let s="\r\n";
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for(let r=0;r<bytes.length;r+=rows) {
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s+= hex(r+start, 4) + ": ";
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for(let c=0;c<rows;c++) {
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let index = r+c;
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if(index < bytes.length) {
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const byte = bytes[r+c];
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s+= hex(byte)+" ";
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}
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}
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s+="\n";
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}
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return s;
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}
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function hex(value, size) {
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if(size === undefined) size = 2;
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let s = "0000" + value.toString(16);
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return s.substr(s.length - size);
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}
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