Navtel 9460 Protocol Analyzer info?

Dwight K. Elvey dwight.elvey at
Thu Apr 14 11:25:41 CDT 2005

>From: "Allison" <ajp166 at>
>>Subject: Re: Navtel 9460 Protocol Analyzer info?
>>   From: Scott Stevens <chenmel at>
>>   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.

 As I recall it was the selection of the crystal frequency.

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