export var SYMBOLS = {
    0xD010: 'KBD',
    0xD011: 'KBDCR',
    0xD012: 'DSP',
    0xD013: 'DSPCR',

    0xFF1F: 'GETLINE',
    0xFFEF: 'ECHO',
    0xFFDC: 'PRBYTE',
    0xFFE5: 'PRHEX'
};