[BBC-Micro] Reversing the Tube ULA (destructively)

Rick Murray rick at rs432.net
Tue Oct 26 05:24:32 BST 2010


On 26/10/2010 05:53, Phill Harvey-Smith wrote:

> I believe his clone, doesn't have as many bytes in it's FIFOs,

Yes, I remember, though this could just be a limitation of the 
programmable logic he used - that adding a larger FIFO would not have 
provided suitable gains for the work involved?


> and I seem to remember him saying that it didn't do DMA I think,

The Tube does DMA!?


I suppose the question is, do we want an EXACT replica, or "something 
that works"?


Best wishes,

Rick.

-- 
Rick Murray, eeePC901 & ADSL WiFI'd into it, all ETLAs!
BBC B: DNFS, 2 x 5.25" floppies, EPROM prog, Acorn TTX
E01S FileStore, A3000/A5000/RiscPC/various PCs/blahblah...





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