bolo@spool.wisc.edu (Joe Burger) (11/04/87)
I'm designing a 32032 system, and have been wondering if the 32203 dma
controller is "real" or not. It is referenced in all my 32000 series
databooks, but I have never found any information about the 32203 itself.
Does it really exist? If so, which National databook has the info
on it?
thanks in advance
Josef Burger -- University of Wisconsin - Madison -- Computer Systems Lab
arpa: bolo@cs.wisc.edu
uucp: {world}!seismo!uwvax!bologrenley@nsc.nsc.com (George Grenley) (11/06/87)
In article <4592@spool.wisc.edu> bolo@spool.wisc.edu (Joe Burger) writes: > >I'm designing a 32032 system, (GREAT! - GG) and have been wondering if >the 32203 dma controller is "real" or not. >Josef Burger -- University of Wisconsin - Madison -- Computer Systems Lab No, it is not really real. We did make it, but it did not set the world on fire, so it is not available for new designs. By the way, I recommend you use the 32332 and 32382 rather than the older parts, unless you are on a tight budget. The 332 is 20% faster (about) than the 032, and is available at 15 mhz, rather than 10 for the 032. It also supports memory spaces greater than 16 meg (24 address bits). On the other hand, the '032 is a good part, so if you are on a budget it is a very good choice. If you decide to use it, the AMD9516 universal DMA controller might be a good companion piece. It is 24 bit addressing. I have used it in earlier designs (not 32032, unfortunately) and it is a good part. Good luck with your design. If you have any questions, let me know. George Grenley - {sun, hplabs, pyramid, decwrl, amdahl}!nsc!grenley