danjovicI have found one issue with the original ZX97 lite schematic: The /WAIT line is connected to an ordinary output pin rather than an Open Collector.
A peripheral device (like my keyboard adapter ) would fail to bring down the /WAIT line to hold the Z80.
I have fixed that on my design with a diode and a pull up resistor
Discussions
Become a Hackaday.io Member
Create an account to leave a comment. Already have an account? Log In.