189 lines
3.7 KiB
TypeScript
189 lines
3.7 KiB
TypeScript
import { byte, Memory, word } from 'js/types';
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const LETTERS =
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' ' +
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' !"#$%&\'()*+,-./0123456789:;<=>?' +
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'@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_' +
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'`abcdefghijklmnopqrstuvwxyz{|}~ ';
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const TOKENS: Record<byte, string> = {
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0x02: '_',
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0x03: ':',
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0x04: 'LOAD',
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0x05: 'SAVE',
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0x06: 'CON',
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0x07: 'RUN',
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0x08: 'RUN',
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0x09: 'DEL',
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0x0A: ',',
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0x0B: 'NEW',
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0x0C: 'CLR',
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0x0D: 'AUTO',
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0x0E: ',',
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0x0F: 'MAN',
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0x10: 'HIMEM:',
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0x11: 'LOMEM:',
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0x12: '+',
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0x13: '-',
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0x14: '*',
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0x15: '/',
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0x16: '=',
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0x17: '#',
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0x18: '>=',
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0x19: '>',
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0x1A: '<=',
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0x1B: '<>',
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0x1C: '<',
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0x1D: 'AND',
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0x1E: 'OR',
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0x1F: 'MOD',
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0x20: '^',
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0x21: '+',
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0x22: '(',
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0x23: ',',
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0x24: 'THEN',
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0x25: 'THEN',
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0x26: ',',
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0x27: ',',
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0x28: '\'',
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0x29: '\'',
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0x2A: '(',
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0x2B: '!',
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0x2C: '!',
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0x2D: '(',
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0x2E: 'PEEK',
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0x2F: 'RND',
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0x30: 'SGN',
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0x31: 'ABS',
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0x32: 'PDL',
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0x33: 'RNDX',
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0x34: '(',
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0x35: '+',
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0x36: '-',
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0x37: 'NOT',
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0x38: '(',
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0x39: '=',
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0x3A: '#',
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0x3B: 'LEN(',
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0x3C: 'ASC(',
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0x3D: 'SCRN(',
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0x3E: ',',
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0x3F: '(',
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0x40: '$',
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0x41: '$',
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0x42: '(',
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0x43: ',',
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0x44: ',',
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0x45: ';',
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0x46: ';',
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0x47: ';',
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0x48: ',',
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0x49: ',',
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0x4A: ',',
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0x4B: 'TEXT',
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0x4C: 'GR',
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0x4D: 'CALL',
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0x4E: 'DIM',
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0x4F: 'DIM',
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0x50: 'TAB',
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0x51: 'END',
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0x52: 'INPUT',
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0x53: 'INPUT',
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0x54: 'INPUT',
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0x55: 'FOR',
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0x56: '=',
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0x57: 'TO',
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0x58: 'STEP',
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0x59: 'NEXT',
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0x5A: ',',
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0x5B: 'RETURN',
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0x5C: 'GOSUB',
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0x5D: 'REM',
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0x5E: 'LET',
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0x5F: 'GOTO',
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0x60: 'IF',
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0x61: 'PRINT',
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0x62: 'PRINT',
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0x63: 'PRINT',
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0x64: 'POKE',
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0x65: ',',
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0x66: 'COLOR=',
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0x67: 'PLOT',
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0x68: ',',
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0x69: 'HLIN',
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0x6A: ',',
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0x6B: 'AT',
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0x6C: 'VLIN',
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0x6E: 'AT',
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0x6F: 'VTAB',
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0x70: '=',
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0x71: '=',
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0x72: ')',
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0x73: ')',
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0x74: 'LIST',
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0x76: 'LIST',
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0x77: 'POP',
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0x78: 'NODSP',
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0x79: 'NODSP',
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0x7A: 'NOTRACE',
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0x7B: 'DSP',
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0x7C: 'DSP',
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0x7D: 'TRACE',
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0x7E: 'PR#',
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0x7F: 'IN#'
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};
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export default class IntBasicDump
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{
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constructor(private mem: Memory) {}
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private readByte(addr: word) {
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const page = addr >> 8,
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off = addr & 0xff;
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return this.mem.read(page, off);
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}
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private readWord(addr: word) {
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const lsb = this.readByte(addr);
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const msb = this.readByte(addr + 1);
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return (msb << 8) | lsb;
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}
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toString () {
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let str = '';
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let addr = this.readWord(0xca); // Start
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const himem = this.readWord(0x4c);
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do {
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/*var len = */this.readByte(addr++);
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const lineno = this.readWord(addr);
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addr += 2;
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str += lineno;
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str += ' ';
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let val = 0;
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do {
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val = this.readByte(addr++);
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if (val >= 0xB0 && val <= 0xB9) {
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str += this.readWord(addr);
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addr += 2;
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}
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else if (val < 0x80 && val > 0x01) {
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const t = TOKENS[val];
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if (t.length > 1)
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str += ' ';
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str += t;
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if (t.length > 1)
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str += ' ';
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}
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else if (val > 0x80)
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str += LETTERS[val - 0x80];
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} while (val != 0x01);
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str += '\n';
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} while (addr < himem);
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return str;
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}
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}
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