Atari IDE disk interface

This project is for people with some soldering and electronical knowledge. Unfortunatelly Atari ST machines have no internal bus connections, and soldering is only way to make some specific hardware extensions.

This interface will allow to connect IDE hard disks, CD ROM drives and other Atapi compatible devices to an Atari ST(E) computer. It is AHDI compatible, and all standard drivers should work on with it. Additional it supports optional ROM upgrade to TOS 2.06 (what is at address $E00000, and has 256KB size) in older (ST) machines, which have 192KB ROM at address $FC0000.

Schematic

GAL listing

Useful links:

http://www.nitebeat.demon.co.uk/ata.zip - ATA-3 IDE interface specification, commands etc.

Schematics for diverse Atari models:

Schematics Mania

The Atari Hardware Hack - TOS section

E-mail

Copyright: Pera Putnik

Last revised: January 07,1999