MTHD

From Bitchin100 DocGarden
Revision as of 11:44, 23 February 2009 by Roger (talk | contribs)
Jump to navigationJump to search

This project it still under development.

The basic idea for this project is to add a harddrive via the System bus on the 100/102/200

The circut is based on a 8255 which controls the harddrive data and control signals.

A 74573 is used to split the ADDRESS and DATA singnals and a 138 is used for IO mapping

The 8255 is split into 3 x 8bit ports, one is used for address, CS, RD, WR and RST. The other two port are used for the 16 data bus.

Mthdv11.jpg

Retrieved from "https://bitchin100.com/wiki/index.php?title=MTHD&oldid=1100"