All files / src serial.js

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39x
 
 
 
261x
261x
 
 
 
357x
357x
357x
 
 
 
28x
28x
28x
28x
28x
28x
28x
28x
 
 
 
1x
1x
 
 
 
const table = [19200, 9600, 4800, 2400, 1200, 300, 150, 75];
 
export class Serial {
    constructor(acia) {
        this.acia = acia;
        this.reset();
    }
 
    reset() {
        this.reg = 0;
        this.transmitRate = 0;
        this.receiveRate = 0;
    }
 
    write(addr, val) {
        val &= 0xff;
        this.reg = val;
        this.transmitRate = val & 0x07;
        this.receiveRate = (val >>> 3) & 0x07;
        this.acia.setSerialReceive(table[this.receiveRate]);
        this.acia.setSerialTransmit(table[this.transmitRate]);
        this.acia.setMotor(!!(val & 0x80));
        this.acia.selectRs423(!!(val & 0x40));
    }
 
    read() {
        this.write(0, 0xfe);
        return 0;
    }
}