14 Apr
2005
14 Apr
'05
9:25 a.m.
From: "Allison" <ajp166 at
bellatlantic.net>
Hi
As I recall it was the selection of the crystal frequency.
Dwight
Subject: Re: Navtel 9460 Protocol Analyzer info?
From: Scott Stevens <chenmel at earthlink.net>
Date: Wed, 13 Apr 2005 22:50:15 -0500
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.
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 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