Miniscribe M8225XT Controller \ VOGONS

Miniscribe M8225XT Controller

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First post, by Jason_rg

Posted on 2022-02-06, 11:51

Jason_rg Offline

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Hi all

Looking to some interesting topics refering Miniscribe drives, I havent found any info about Miniscribe XT controllers.
May be some one could help for findeing one XT Contoller board Bios used with M8225XT hard disk, due to the bios is broken. Not possible to read.
May be there are some "compatible" Bios available. Any Help will be apreciated.

The Hard disk It looks broken due to no head moving, but spinning.

Some board picture attached:

More helpfull info founded in this web in the past (like amstrad 8256 floppy adapter), expect to find more info about this controller.
Thanks to all.

Regards

Reply 1 of 5, by Jason_rg

Posted on 2022-02-07, 13:17

Jason_rg Offline

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Joined: 2021-03-14, 11:32

Just found this rom but I think is the hard disk one not the controller:
http://www.bitsavers.org/pdf/miniscribe/Miniscribe_8225XT/

In my hard disk shows MXX 06AE 4.08

Regards

Reply 2 of 5, by rmay635703

Posted on 2022-02-07, 17:03

rmay635703 Offline

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Odd one wonders if an actual XT 8-Bit only controller could just use the generic “16bit XTIDE” bios one uses in the home built 16 bit XTIDE controller?

XT compatible drives are getting hard to find, might need to bite the bullet and get a 16 bit compatible card.

The only system I encountered XT drives were in Tandy’s which had the ideotic smart drive software requirements

Reply 3 of 5, by rasz_pl

Posted on 2022-02-07, 17:45

rasz_pl Offline

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Olivetti Prodest PC1-HD, Commodore, there were a few systems with 8bit IDE
https://www.vcfed.org/forum/forum/genres/pcs- … isk-replacement

Open Source AT&T Globalyst/NCR/FIC 486-GAC-2 proprietary Cache Module reproduction

Reply 4 of 5, by rmay635703

Posted on 2022-02-07, 18:07

rmay635703 Offline

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rasz_pl wrote on 2022-02-07, 17:45:

Olivetti Prodest PC1-HD, Commodore, there were a few systems with 8bit IDE
https://www.vcfed.org/forum/forum/genres/pcs- … isk-replacement

8 bit ide released after the 16 bit Winchester version and never made much sense

My other thought was the ide standard both controller and drive should have had autosensing for 8 bit / 16bit and been interchangeable.

Some 16bit drives will accept 8 bit transfers which means only the pinout was a problem which is an extremely stupid limitation to having a universal standard between both controllers

Reply 5 of 5, by highvoltage

Posted on 2024-04-26, 10:07

highvoltage Offline

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Hi, do you still have this card? I have something that seems similar, full thread is here: Working XTA (IDE on XT) setup on GLaBIOS

And I managed to dump a ROM that might work on that card, it's here:

https://jonathancarter.org/files/temp/xt/PX-HDC.BIN

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