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Superfast Multicomp implementation!! [message #5567] Thu, 22 November 2018 01:02 Go to previous message
jonb is currently offline  jonb
Messages: 91
Registered: August 2016
Location: UK
Member
Hi

I've been looking at some of the Multicomp implementations on the Wiki and wondering what the difference is, apart from the obvious (such as multiple serial ports). What I am looking for is a really fast CP/M FPGA machine. At the moment I have a standard Multicomp exactly per Grant's design running at 25Mhz which is pretty zippy, but I do wonder how much quicker it could be.

I saw a tidy looking board here: https://www.retrobrewcomputers.org/doku.php?id=builderpages: rhkoolstar:start - that uses a Cyclone IV breakout board. I'd like to ask, is it any faster than the Cyclone II or is it just a matter of providing more space / pins?

There was another thread discussing Cyclone IV Multicomp designs and wondering about adding graphics and other capabilities: https://www.retrobrewcomputers.org/forum/index.php?t=msg& ;amp ;th=79&start=0&

Did anything come of this? I did suggest to Grant that the ROM BASIC in his original design could be dropped in favour of a limited graphical capability on the Cyclone II but I don't have the expertise to do it.

Also, on the subject of performance, might a more efficient core like the NextZ80 be used for this? Grant's design uses a core called T80 at the moment.

Sorry, lots of questions! I've been playing with real CP/M hardware fro quite a while now and only just coming back to the Multicomp.

Thanks
JonB

[Updated on: Tue, 08 January 2019 03:13]

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