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My Pentium I Build Thread

Well I may have spoke too soon. I spent some time fiddling with the machine trying to get USB to work and now it is not posting. I've taken everything back out and jockied the remaining cards around. It can't be a CMOS setting because those can't be saved. I was getting “Conflict I/O ports: 378” before it stopped posting.
 
I didn't read the whole thread, but if the motherboard had USB headers and you wired them wrong (early USB headers weren't standard) and plugged something in, you could have shorted the 5v rail to ground and damaged something.
 
hunterjwizzard said:
The serial port card has worked great. My next goal is to see if I can't get USB to work. Supposedly its physically possible under windows 95 OSR2.5. Although whether it will still work under DOS or not is another question. IF I can get it all working I can use this machine with my video capture card and play with it at my desk.
Click to expand...
Checkout VOGONS:

USB storage drivers that work in DOS 6.22? \ VOGONS

www.vogons.org www.vogons.org
 
GiGaBiTe said:
I didn't read the whole thread, but if the motherboard had USB headers and you wired them wrong (early USB headers weren't standard) and plugged something in, you could have shorted the 5v rail to ground and damaged something.
Click to expand...
I did not. When I discovered the USB header was non-standard, I abandoned the onboard USB and focused my efforts on USB peripheral cards.

Here's what happened:

I first installed a SIIG JU-P20012 USB 1.1 card I have new-old-stock that works in other PCs. It did not work in this machine, '95 couldn't find the drivers. I found this download pack on archive.org: https://archive.org/details/drivers-usb-1.1-2.0-for-win-95-mac but my SIIG card has a sticker over the chip I am unwilling to peel off.

Next I tried a USB 2.0 card from my bin with an NEC chip and the NEC drivers from the IA pack. But I couldn't figure out how to point '95 at the correct driver file and it couldn't find the drivers when I put them on a virtual floppy.

I then decided to try a new-old-stock card with an NEC chip that I have an actual driver CD for. This is when the issue started. First it got into windows, started detecting the card, and then the screen went black. Then it stopped posting. I took the card out, it posted a few times with an I/O error, now it won't post at all.

I don't THINK the problem was the USB card itself. I followed standard troubleshooting and took out the new card, then the other new card, then every card except the graphics card. No joy. My beautiful little AT machine will not post.
 
hunterjwizzard said:
I reeeeeeeeallllly hope its not too non-standard...


That could be handy except I'm guessing I can't hook a normal one to it?
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For the usb one all you need is to poke a hole to make it a 10-pin, 2x5 connector.
When plug it in, the 2 red wires should go to the 2 pins closer to the edge of the motherboard.

For the ps/2 mouse, you may need to make your own connector.

Refer to the motherboard doumentation on retroweb, for the pinout. your ps/2 mouse port should go to J3.

 
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h2ospa said:
For the ps/2 mouse, you may need to make your own connector.
Click to expand...
I've discovered long time ago I should not attempt to make my own connectors.

h2ospa said:
For the usb
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I'm attempting to use a USB peripheral card instead. I'm gonna have the same problem with getting driver to work. Also I've noticed the motherboard USB does not appear in my device manager, so probably it has to be turned on in the BIOS which I can't do because no CMOS battery.

Oh and also I broke it and it won't post now. /cry emoji
 
So I left it unplugged most of an hour. Then I decided to try it one more time... and it booted! Then it rebooted mid-use. I don't know if I can take this emotional rollercoaster.
 
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