SCHWIETZ@DBNUOR1.BITNET (Edgar Schwietzke) (10/14/89)
Could somebody please explain whether there is the risk of damaging the soundchip when an output signal from a TTL-compatible (no tri-state or open-collector) device is directly fed to the printer port? As far as I know, the printer port is switched to output mode during system initialization. Therefore, there is a good chance that the port lines are tied to different voltage levels until the port is explicitly switched to input mode. I'm using a A/D converter directly connected to the printer port without any problems so far. Nevertheless, I'd like to know what's going on ... Edgar