Marty
Veteran Member
Hi All;
I have John Monahan's S-100 Z80 CPU Board Ver 02, and I am trying to make John's Serial IO Board Version 3 work together..
It will not Display anything on Tera-term, but Pressing any key on Tera-term makes it thru to the SCC IC..
But, if I take out the SCC IC and connect pins 13 and 15 together, I shows the correct letter that I pressed..
I have a Breakout Box, and I have been using that to see which signals are making it in and out..
I have also tried different combinations for the other pins (DTR, DCD, CTS and RTS)..
But, still nothing is displayed on the Screen..
I do not have the USB Upload/Download connected, Do I need that to make the SCC IC work, or does the Z-80 Board and it's EPROM Load the SCC IC ??
I am at a Loss, can anyone help me, find the Problem.. Thank You!!
THANK YOU Marty
I have John Monahan's S-100 Z80 CPU Board Ver 02, and I am trying to make John's Serial IO Board Version 3 work together..
It will not Display anything on Tera-term, but Pressing any key on Tera-term makes it thru to the SCC IC..
But, if I take out the SCC IC and connect pins 13 and 15 together, I shows the correct letter that I pressed..
I have a Breakout Box, and I have been using that to see which signals are making it in and out..
I have also tried different combinations for the other pins (DTR, DCD, CTS and RTS)..
But, still nothing is displayed on the Screen..
I do not have the USB Upload/Download connected, Do I need that to make the SCC IC work, or does the Z-80 Board and it's EPROM Load the SCC IC ??
I am at a Loss, can anyone help me, find the Problem.. Thank You!!
THANK YOU Marty