Navtel 9460 Protocol Analyzer info? - test-drb@ccmp.vtda.org

14 Apr 2005

...
 Subject: Re: Navtel 9460 Protocol Analyzer info?
   From: Scott Stevens <chenmel at earthlink.net>
   Date: Wed, 13 Apr 2005 22:50:15 -0500

 How about one Z8530?  :-)  [it's a DUART, for the Zilog-impaired]

The 8530 is a useful part for dedicated purposes, but isn't it severely
bandwidth cramped?  I am thinking that it's the serial chip in the 
Nope, it's a 2mb/s part thats what the DMA is for.  Even the Z80 dart
a earlier part was good for more than 800kb/s.

...
 Sparcstations, correct me if I'm wrong.  A few
years ago I was pondering
making a 'dialup connecting system with NAT server' out of a
SparcStation Classic (the little lunchbox type Sparc).  I discovered
quickly that the serial ports on the Sparc are VERY speed constrained
because of the 8530 chip.  It would have been impossible to connect my
USB Courier V-everything modem to it at, say 57,600 baud, because the
8530 just plain won't go that fast. 
That was implmentation not the part.

Allison