Edwin's HD BOOT ROM often not boot from some CF cards. After boot B-DOS from FDD is all OK and CF card is usable, but automatic boot after reset/power-on not work with all CF cards...
I compare original SAM COUPE rom 3.0 with HD BOOT ROM and sign all modified code for disassembly. Later I can detect bug(s) and fix it. Exist source code of HD BOOT ROM code ? VELESOFT ----- Original Message ----- From: VELESOFT To: SAM USERS Sent: Thursday, December 22, 2011 10:37 PM Subject: New ATOM HDD Here is original old schematic of ATOM HDD interface: http://8bit.yarek.pl/interface/sam.atom/atom.gif My first ATOM: http://velesoft.speccy.cz/samcoupe/atom_hdd_interface/atom_hdd_if.jpg Here is Polish version by Yarek Adamsky: http://8bit.yarek.pl/interface/sam.atom/ http://8bit.yarek.pl/interface/sam.atom/atom009.jpg Yarek's ATOM HDD version 007 with my design modifications: - add possibility connect reset button for removable medium as SD card - connect 5V power to IDE pin 20 (used in CFtoIDE and SDtoIDE adapters) http://velesoft.speccy.cz/samcoupe/atom_hdd_interface/IMGP8032.JPG http://velesoft.speccy.cz/samcoupe/atom_hdd_interface/IMGP8035.JPG http://velesoft.speccy.cz/samcoupe/atom_hdd_interface/IMGP8036.JPG http://velesoft.speccy.cz/samcoupe/atom_hdd_interface/IMGP8037.JPG http://velesoft.speccy.cz/samcoupe/atom_hdd_interface/IMGP8038.JPG http://velesoft.speccy.cz/samcoupe/atom_hdd_interface/IMGP8039.JPG http://velesoft.speccy.cz/samcoupe/atom_hdd_interface/IMGP8040.JPG Info about original ATOM: http://www.worldofsam.org/node/217 VELESOFT
