| Re: Z80 MC6845 video board examples [message #9860 is a reply to message #9859] |
Tue, 12 April 2022 09:50   |
norwestrzh
Messages: 196
Registered: November 2015
|
Senior Member |
|
|
Andrew --
I built the original ZRT-80, and thought it was a good approach to a video terminal. Unfortunately, I found that mine worked well for a short time, but it hung up periodically. It had to be reset constantly. I don't know if the problem was my limited build skill, or if there was a problem with the design. I do remember (I think?) that the build instructions that came with the device specified that some of the components (speed?) were critical for proper operation. Maybe it would be prudent to evaluate the original design to be sure that this hang-up/reset problem doesn't persist in a newer version?
Roger
[Updated on: Tue, 12 April 2022 10:40] by Moderator Report message to a moderator |
|
|
|
RetroBrew Computers Forum
Members
Search
Help
Login
Home
