Le 20/11/2012 23:59, Conrad a �crit :
>increase on its own. I am aware that its still available and I will be acquiring the CPUs I >need from WDC or a distributor. The problem with these CPUs is that they officially top out at 14MHz,@JV: Yes that is the CPU that will be used on this card (the PLCC version) and could also be used to replace the cpu of a stock IIGS (the DIP version) although it would offer no speed
>would need an alternative. That is why we were discussing an RTL implementation of the CPU.although you can push them a bit faster then that. If we wanted to make for example a 40MHz TWGS we
If fact, you'd better try to rebuild a complete "IIgs in a chip" like the Amiga minimig project (http://www.minimig.net/), if you want to build a ultra faster IIgs. They rebuilt an Amiga using an FPGA (and a 68000...For your project, you will need, also, to build an 65816 in FPGA).
For my part, it's not what I want/ I only want a working TWGS, at 14Mhz, with the maximum amount of cache if possible, but even a stable/working 7Mhz/8k will make me happy !
JV