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Re: [N8VEM-S100:1808] S-100 68K CPU board V3
Not sure it makes sense on an S-100 board as the address space is limited to 16 MB. It will probably be an SBC with a couple hundred MB of memory - when we start getting in the GB range it is not quite as practical and the old chips are limited to 4GB anyway without a lot of additional memory decode tricks. I can probably get old version of NetBSD flavor running on even a 68K with some tricks - at least I will be able to gauge the complexity.
On Tuesday, August 13, 2013 1:22:59 PM UTC-5, David Brownlee wrote:
On Tuesday, 13 August 2013 18:22:09 UTC+1, yoda wrote:
> Yes I will be posting a lot of stuff in a couple of weeks (source code, pictures, etc).
> Yes I have not forgotten the other project and am using this as a stepping stone for monitor and other code. I have been thinking about it a lot and have come to the conclusion we may be better off with just a 68040 SBC then trying to marry the 68360 to one. The 68360 introduces a lot of complexity that is not really necessary. I think we are going to have to accept some type of small board with SMT memory on it to get to where we want to go. I think we are seeing the same thing happen on the 80386 board as well. I am looking at ways to make a small FPGA into a memory controller and still have room for some more functions in it like timers which we will need for linux or other unices.
I've been looking for an S-100 board which could potentially run NetBSD. Theoretically the baseline would be a 68020 plus 68851, though '040 would probably make more sense there as well :) (or Coldfire, but thats a different path).
If the 040 SBC gets to the "pre-order but with no defined timescale" stage then I'd definitely be interested :)