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Re: [N8VEM-S100:5533] SCC and Z80/8086 monitor

Hi Rich --

.... configuration also exhibits “input anomalies”. In this case, I
see only output — no input. I can definitely “see” characters coming
through the interface (using my protocol analyzer), but nothing on
the screen.

I'm having the same problem. I can spew output from the serial card to an RS232 device, but cannot get any input back from the RS232 device. My board also "passes" the loopback test. I was assuming that there is something about the RS232 "control" signals on the interface that I'm not doing correctly, but so far I've not found out what that is. I'm just trying to use a "simple" 3-wire connection (that works for so many other UARTS -- Z80 DART, Z80 SIO, 8251, etc. etc.). Is there something strange about the SCC?