apple1-videocard-lib/tools/mkeprom.js
2021-12-15 14:38:52 +01:00

40 lines
1.1 KiB
JavaScript

/*
const fs = require('fs');
function prg2bin(){
let prg = fs.readFileSync("tetris_apple1.prg");
prg = prg.slice(2);
fs.writeFileSync("tetris_apple1.bin",prg);
console.log("bin written");
}
*/
const fs = require('fs');
if(process.argv.length < 3) {
console.log("usage: node mkeprom.js <inputdir> <outputfile>");
console.log(" <inputdir> is the directory containing 'apple1_codeseg.bin' and 'apple1_dataseg.bin'");
console.log(" <outputfile> is outfile binary eprom file ($4000-$7FFF)");
process.exit(0);
}
let file_in = process.argv[2];
let file_out = process.argv[3];
let code = fs.readFileSync(`${file_in}/apple1_codeseg.bin`);
let data = fs.readFileSync(`${file_in}/apple1_dataseg.bin`);
let mem = new Uint8Array(65536).fill(0xAA);
let code_address = 0x4000;
let data_address = 0x8000-0x7ff-0x280+1;
for(let i=0;i<code.length;i++) mem[code_address+i] = code[i];
for(let i=0;i<data.length;i++) mem[data_address+i] = data[i];
let prg = mem.slice(0x4000,0x8000);
fs.writeFileSync(file_out, prg);
console.log(`bindump: written to ${file_out}`);