Rocksolid Light - comp.lang.forth - Re: BugsBoard: an FPGA design for the Digilent Cmod S7

Re: BugsBoard: an FPGA design for the Digilent Cmod S7

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https://news.novabbs.org/devel/article-flat.php?id=24354&group=comp.lang.forth#24354

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Subject: Re: BugsBoard: an FPGA design for the Digilent Cmod S7
From: myronplichota@gmail.com (Myron Plichota)
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by: Myron Plichota - Mon, 21 Aug 2023 02:39 UTC

On Sunday, August 20, 2023 at 10:09:02 PM UTC-4, Hugh Aguilar wrote:
> On Sunday, August 20, 2023 at 6:35:21 PM UTC-7, Myron Plichota wrote:
> > I wish that clf culture relaxed a wee bit and became famous for promoting
> > the merits of fundamental Forth programming precepts.
> I remember that I told you about Testra's MiniForth built on the Lattice
> isp1048 PLD in 1995 and how it held the data-stack in external memory.
> My processor design also holds the data-stack in memory (internal now).
> You said that myself and everybody at Testra should take a Programming-101
> class to learn basic programming concepts. You seem to think that the only
> viable solution for a Forth processor is to hold the entire data-stack in
> cell flip-flops so that Forth words such as DUP SWAP OVER + etc. can be
> single clock-cycle. The data-stack would be fairly small, like 8 elements..
> There are actually serious problems with this technique. For one thing,
> you can't have ISRs because you have no way to save/restore the Forth context.
> I think that you could really relax a wee bit too --- dial down the arrogance!
>
> The MiniForth was used in a a motion-control board that was less-expensive
> and higher-performing than the competition's motion-control board that used
> an MC68000 programmed in C. Has the Bugs18 processor ever competed
> successfully with C? Has it ever been used in a real-world application?
> This is the year 2023 --- the MiniForth came out in 1995 --- nobody in the
> Forth community has come up with anything comparable after three decades.
>
> Your Bugs18 has a 6-bit opcode, so there are 64 instructions.
> That is not very many! There is no future in a processor with only 64
> instructions --- this is a toy --- it will never be used for real-world applications.

Hi Hugh, you has been troll!

Bugs18 in fact has a mere 4-bit opcode per slot and runs on my bench performing real-time audio programs, not that you care about the facts.

Without life, Biology itself would be impossible.

devel / comp.lang.forth / Re: BugsBoard: an FPGA design for the Digilent Cmod S7

Subject	Author
Re: BugsBoard: an FPGA design for the Digilent Cmod S7	Myron Plichota