This project is a small component count, generic 8 bit 10base-T Ethernet interface targeted at either an hc11 or an 8051 system.  The software includes a partial IP stack with support for UDP. The hardware been interfaced as examples to both hc11 and 8051 systems.


6 April 2002 - Software version 3.0 released includes 8051 support. 8051 code runs on multiplexed simmstick and IO mapped designs
4 February 2002 - SimmStick hardware prototype under development
25 December 2001 - Version 2.1 software released (see here for more details)

Hardware features

Interface Details

HC11 interface details

Simmstickô compatible 8051 interface details

Cygnal 8051 IO mapped interface details

Software features

Discussion Group

Discussion Group At Yahoo There is a discussion group for this project at Yahoo Groups.

Further reading

Alternate Hardware