Anyway, this is not about me... it's about Brads mad retro project :D
Ja, please don't get confused:
I'm just trying to trick new forum members into building 6502 compatible "mad retro" TTL CPUs. ;) :)

I feel I'm a Judas, though... I joined for the 7400 logic knowledge that people have on this ...

Slowly extending the Databus finally pointed me to the first (of probably a few) design errors. Glad you're making progress! For future reference, be on the lookout for chips that seem to be running hot (especially when the supply current seems excessive). These are clues that might possibly have ...

Thanks for the welcome

Yeah, 7400 logic is fascinating to learn... My background is programming games since the 80s so all the logic in digital electronics comes natural to me.

Anyway, this is not about me... it's about Brads mad retro project

I'm glad you are back doing this! I have to say, reading all your posts on various forums inspired me to start learning about digital electronics a couple of years ago. Just by reading your posts I have learnt a tremendous amount of knowledge in this area. For me, I feel when you learn a new subject ...