0 Mitglieder und 2 Gäste betrachten dieses Thema.
NOTE: If you are using the SIO2PC software, connect pin 6 of the 14C89 (75C189) to the the PC RI pins. If you are using the newer APE software (v1.16), you can connect pin 6 of the 14C89 to either DSR or RI but change the software to reflect this. If you are using WinApe, use the DSR hookup. Works better. The diode should have a low forward voltage drop. A 1N270 would work or just about any schottkey or even the humble 1N4148. What we are looking for is less than .6 volt drop here.