24 Jan
2003
24 Jan
'03
8:37 p.m.
On Thursday, January 23, 2003, at 11:27 PM, Jeffrey Sharp wrote:
I'm currently looking at the DS80C400. That is one scary chip.
Hardware math accelerator, 10/100Mbps ethernet controller, TCP/IP stack
and multitasking OS primitives in on-chip ROM...most impressive.
This is a microcontroller that can, no shit, boot its firmware via
DHCP and TFTP.
-Dave
--
Dave McGuire "Wear whatever you want...Just don't be surprised
St. Petersburg, FL if you wind up with a blow-gun dart in your
prosthetic boobies." -Kurt Huhn
The original
8051 really suffers from only having one 16 bit DPTR
(data
address register). This has been corrected on some of the improved
versions now available, but code written for those is no longer
portable
to all 8051 derivatives.
I wrote a bit of firmware for the Dallas DS80C520, one of the improved
versions. It was great fun. There is a *lot* of functionality packed
into
that chip.