On Thursday, January 23, 2003, at 11:27 PM, Jeffrey Sharp wrote:
>> 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.
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
Received on Sat Jan 25 2003 - 04:37:12 GMT