MTHD: Difference between revisions

From Bitchin100 DocGarden
Jump to navigationJump to search
No edit summary
No edit summary
 
(One intermediate revision by one other user not shown)
Line 1: Line 1:
This project it still under development.
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 basic idea for this project is to add a hard drive via the [[System bus]] on the 100/102/200


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


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


[[Image:Mthdv11.jpg]]
[[Image:Mthdv11.jpg]]


[[Category:Model T Hardware]]
[[Category:Model T Hardware]]

Latest revision as of 17:56, 17 December 2009

This project it still under development.

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

The circuit is based on a 8255 which controls the hard drive data and control signals.

A 74573 is used to split the ADDRESS and DATA signals 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