IngoQ wrote: ↑Thu Sep 21, 2017 3:17 pm
Okay, so the ATMEL in this case replaces the MACH210.
Basically yes.
IngoQ wrote: ↑Thu Sep 21, 2017 3:17 pm
I was hoping someone else did something alike, so to say a Magnum with a current PLD like the Atmel. Only as a standalone version to interface with the CPU bus.
I don't think so no. You still need a large PLD as they are 23 address pins, plus you need a few other control lines as well, plus chip enable lines, plus a few others for power etc so you still end up needing a pretty large PLD anyway. So if using a large PLD might as well have the booster and ROM decoding in their, aka V2.5 booster.
There's a similar situation with the the 2.2 booster. That people wanted simply a TOS 206 upgrade, but as I said to people in the past, by the time you have added the GALs and all the logic, you might as well add the ROM and CPU booster code into it as well. So in a way it becomes a bit pointless doing a separate ROM board. Not only that, it generates a lot more work as then 2 projects have to be completed instead of one.