Hardware design
Posted: Sun Jul 06, 2008 1:07 am
Hello all,
I'm probably barking up the wrong tree here, but does anyone here have any hardware design experience (specifically, NTSC video signalling)? I'm working on a simple computer (80s-ish) as a hobby electronics project. My first impulse was to use a 6502 with a display controller IC, before I found out it's ridiculously difficult to find a 6502 any more, and even harder to find a display controller for something like this.
So now I've got most of the design down using a Z80, but I can't figure out the whole display controller thing. I'm thinking about just using shift registers and another Z80 as a display controller with the clock interleaved with the first to avoid bus contention. Basically, I'm just looking for pointers on where to further my research into this.
Anyway, I understand if nobody can help, but I just figured if there's anywhere decent to ask left, it'd be here. lol
I'm probably barking up the wrong tree here, but does anyone here have any hardware design experience (specifically, NTSC video signalling)? I'm working on a simple computer (80s-ish) as a hobby electronics project. My first impulse was to use a 6502 with a display controller IC, before I found out it's ridiculously difficult to find a 6502 any more, and even harder to find a display controller for something like this.
So now I've got most of the design down using a Z80, but I can't figure out the whole display controller thing. I'm thinking about just using shift registers and another Z80 as a display controller with the clock interleaved with the first to avoid bus contention. Basically, I'm just looking for pointers on where to further my research into this.
Anyway, I understand if nobody can help, but I just figured if there's anywhere decent to ask left, it'd be here. lol
Thank you very much. Exactly the kind of pointer I was looking for.