#!/usr/bin/env node
// Quick test script to verify VICE binary monitor protocol
// Run: node test-binary-protocol.js
import { Socket } from 'net';
const HOST = '127.0.0.1';
const PORT = 6502;
const sock = new Socket();
let buffer = Buffer.alloc(0);
function parsePackets() {
while (buffer.length >= 9) {
const stx = buffer[0];
if (stx !== 0x02) {
console.log(`Skipping non-STX byte: 0x${stx.toString(16)}`);
buffer = buffer.subarray(1);
continue;
}
const apiVer = buffer[1];
const bodyLength = buffer.readUInt32LE(2);
const totalLength = 9 + bodyLength;
console.log(`\nPacket header: STX=0x${stx.toString(16)} API=0x${apiVer.toString(16)} bodyLen=${bodyLength} totalLen=${totalLength} bufLen=${buffer.length}`);
if (buffer.length < totalLength) {
console.log(' Waiting for more data...');
break;
}
const respType = buffer[6];
const errorCode = buffer[7];
const reqId = buffer[8];
const body = buffer.subarray(9, totalLength);
console.log(` RespType: 0x${respType.toString(16)}`);
console.log(` Error: 0x${errorCode.toString(16)}`);
console.log(` ReqID: ${reqId} (0x${reqId.toString(16)})`);
console.log(` Body (${body.length} bytes): ${body.toString('hex')}`);
// Interpret response type
const typeNames = {
0x00: 'Invalid',
0x01: 'OK',
0x02: 'Object',
0x11: 'Stopped',
0x12: 'Resumed',
0x31: 'MemoryGet',
0x62: 'RegisterInfo',
0x63: 'CheckpointHit',
};
console.log(` Type name: ${typeNames[respType] || 'Unknown'}`);
buffer = buffer.subarray(totalLength);
}
}
sock.on('connect', () => {
console.log('Connected to VICE');
// Send a simple registers get command
const body = Buffer.from([0x00]); // memspace = main CPU
const header = Buffer.alloc(8);
header[0] = 0x02; // STX
header[1] = 0x01; // API version
header.writeUInt32LE(body.length, 2); // body length
header[6] = 0x01; // request ID
header[7] = 0x22; // RegistersGet command
const packet = Buffer.concat([header, body]);
console.log('Sending packet:', packet.toString('hex'));
sock.write(packet);
console.log('Packet sent, waiting for response...');
});
sock.on('data', (data) => {
console.log(`\n--- Received ${data.length} bytes: ${data.toString('hex')}`);
buffer = Buffer.concat([buffer, data]);
parsePackets();
});
sock.on('error', (err) => {
console.error('Socket error:', err.message);
});
sock.on('close', () => {
console.log('\nConnection closed');
if (buffer.length > 0) {
console.log(`Remaining buffer: ${buffer.toString('hex')}`);
}
});
sock.on('timeout', () => {
console.log('Socket timeout');
sock.end();
});
sock.setTimeout(5000);
sock.connect(PORT, HOST);
