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M919 Rev. 3.4 B/F

PCChips M919 Amptron DX9500 Amptron DX9700 Eurone EM-4500U

Here you will find only little information:

• Revisions so far:
  • Rev. 1.2, Cache-Sockets, four 30-Pin and 2 72-Pin Ram-Sockets.
  • Rev. 1.4, Cache-Sockets, four 72-Pin Ram-Sockets. Picture
  • Rev. 1.5, ?
  • Rev. 3.2, Cache-Module, four 30-Pin and two 72-Pin Ram-Sockets.
  • Rev. 3.3, ?
  • Rev. 3.4, Cache-Module, four 72-Pin Ram-Sockets. Picture
Note that in the small picture above, the two FAKE-Cache-Chips are missing.
Amptron has two names for the board. The DX9500 is Rev. 1.x, Rev. 3.x is named DX9700.

• Even if the Cache-Module on this board looks like a Coast-Module, it is not!.
  A Coast-Module will not work!
• The latest Bios is at
  
  • BNS or
  • here.
  • The previous version is here.
  This bios requires (!) a flashable chip.
  An Atmel 29C010 works fine in my board.
• IDE-Drivers? Sure!
• If you have an old Bios and experience troubles with your Soundblaster PnP-Card, you'll need this tool.
• Take a look at the original pages for features and jumpers.
• I had to rplace the two transistors for the onboard power plane (the ones with the heatsinks). Mine were NEC D1691. I used compatible D826. Works perfect so far.
• All testprgs state, that the memory above 56 MB is uncached.
• I've got reports, that Adaptec 154x-ISA SCSI Controllers make troubles with this board.
• A must for the owner of such a board was the Unofficial Homepage.
  Unfortunately it's gone now.
  Here is what I have found on my backups.

If you have questions, contact me

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