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Shuttle HOT-433 Rev 4 - Couple of questions

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First post, by zuldan

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I managed to get one of these boards. Getting 17Fps in Quake so very happy. I wish to use a 10Gb PATA drive with the board and run Windows 95. I guess I have two options:

1) Install an IDE Controller
2) Upgrade the to the Award BIOS (2A4X5H21 - Newer AWARD Bios for HOT-433?)
3) Use XTIDE https://youtu.be/ofZLDAOmZYU?si=y2qfYnzePV8EiQVO

Couple of questions:

1. I have a Promise Ultra66 (using latest v2.00 firmware). It appears to work fine (detects the CF card correctly) but I can’t get it to boot to my CF Card (onboard IDE Controller is disabled and 33MHz PCI bus). The CF card is 4GB but formatted to 2GB and boots fine from the onboard IDE controller. I haven’t tried to boot from the 10Gb PATA drive yet. I read here My 486 UMC8886/8881 Project (Version 2.0) the board is very picky about IDE Controllers so maybe this isn’t an option unless I grab a HighPoint controller (which will boot?).

2) I read somewhere a lot of things don’t work with Rev 4 with the Award BIOS like the FDC (not sure why it’s listed on TRW if it wasn’t for Rev 4?). Will my COM ports work? I can live without a FDC but not a serial mouse (maybe a work around is to get a PicoGUS and use a USB mouse). I think I’m running the latest AMI BIOS but the BIOS post string has “-H” tagged on the end?

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Last edited by zuldan on 2024-12-02, 12:57. Edited 5 times in total.

Reply 1 of 2, by Disruptor

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Hi,
I am the author of My 486 UMC8886/8881 Project (Version 2.0)
Please be aware that mkarcher and me are using a HOT-333 Rev. 1-3, so the informations of this thread may be limited usable for you. And we use FSB 40, which means an overclocked PCI bus.

Running PCI and FSB on 33 MHz is not an option for us, despite we know we would face much less trouble.
All the troubles we faced because: 2:1 PCI clock would lead to a 20 MHz PCI bus clock which is incompatible with several controllers and/or graphics cards. 3:2 PCI clock devider does not generate a symmetric high and low signal, even more PCI cards have a problem with this.

Reply 2 of 2, by bakemono

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One time I used a utility to integrate the XT-IDE BIOS option ROM into the main BIOS (no ISA card needed) on a HOT-433. I can't remember if it was the AMI or Award though. A nice side effect of using the XT-IDE BIOS was that the motherboard IDE port worked evenat 60MHz PCI.

GBAJAM 2024 submission on itch: https://90soft90.itch.io/wreckage

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