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Hi there!

[UFO]

Experienced Member
Joined
Feb 6, 2012
Messages
56
Location
Spain
Hi!

My name is Rafa, from Cádiz, Spain. I arrived to this forum looking for some info about the QDI US491P3 mainboard, which was my most recent adquisition :) .

I'm 29, grew up with an IBM Aptiva equipped with a 486SX-33 and 4MB RAM bought back in 1995. Now, I have an Aptiva boosted to a 486 DX4-100 and 16 MB RAM, where I have a little FTP server. I like vintage games, both playing and editing, and programming languages, specially Basic, Pascal and C.

I do not consider myself a collector but like to get everything related to IBM PS/2 computers and newer. I hope to learn much from this forum and its people.

Cheers! :D
 

barythrin

Veteran Member
Joined
Oct 5, 2005
Messages
6,256
Location
Texas
Welcome to the forums! :) Is that the only vintage system you're using now adays? Pretty nice computer for all of the above (gaming, programming, etc).
 

[UFO]

Experienced Member
Joined
Feb 6, 2012
Messages
56
Location
Spain
Thank you all for the warm welcome! :)

Welcome to the forums! :) Is that the only vintage system you're using now adays? Pretty nice computer for all of the above (gaming, programming, etc).

Well barythrin, that is the only PC-like system that I have and use everyday. I also have a Sinclair ZX Spectrum +2A and a Sony MSX HB-10P (they were my childhood machines, back in the 80s) in excellent working condition but use them once in a while. I will put a pic soon to show them.
 

[UFO]

Experienced Member
Joined
Feb 6, 2012
Messages
56
Location
Spain
Introducing my humble machine:

Board: IBM Aptiva 2144 - Type C1
CPU: Overdrive DX4-75 (BIOS recognize it as a DX4-100!)
RAM: 16 MB - SIMM 72c
HD: IBM - 1.2 GB
Video: Cirrus Logic GD-5422 ISA - 1 MB
Sound: Sound Blaster Pro ISA
Network: 3COM Etherlink III ISA
Optical: LG CD-RW
OS: FreeDOS (thinking about a multi-boot with WIN95... will see...)




Hope you like it! :)
 

Pepinno

Veteran Member
Joined
Apr 16, 2007
Messages
553
Location
Barcelona
Introducing my humble machine:

Board: IBM Aptiva 2144 - Type C1
CPU: Overdrive DX4-75 (BIOS recognize it as a DX4-100!)
RAM: 16 MB - SIMM 72c
HD: IBM - 1.2 GB
Video: Cirrus Logic GD-5422 ISA - 1 MB
Sound: Sound Blaster Pro ISA
Network: 3COM Etherlink III ISA
Optical: LG CD-RW
OS: FreeDOS (thinking about a multi-boot with WIN95... will see...)

That nice machine is screaming it wants to run Xenix. :D
 

[UFO]

Experienced Member
Joined
Feb 6, 2012
Messages
56
Location
Spain
So, the sooner I introduce it to the community, the sooner fails. Suddenly, it does not boot. I was in FreeDOS and it appeared a MEMORY ERROR and some hexadecimal digits overwriting the current screen.

I boot it up, it does the memory test, calculates the 16 MB I have installed and stays there. No beeps, no nothing. Sometimes I can get into the IBM Configuration Utility (BIOS config), sometimes don't, it appears a screen asking for a disk and press F1... I do not know... I have to investigate what the f&$% happened. Darn it! :(
 

Caluser2000

Veteran Member
Joined
Jan 3, 2010
Messages
4,608
Location
New Zealand
So, the sooner I introduce it to the community, the sooner fails. Suddenly, it does not boot. I was in FreeDOS and it appeared a MEMORY ERROR and some hexadecimal digits overwriting the current screen.

I boot it up, it does the memory test, calculates the 16 MB I have installed and stays there. No beeps, no nothing. Sometimes I can get into the IBM Configuration Utility (BIOS config), sometimes don't, it appears a screen asking for a disk and press F1... I do not know... I have to investigate what the f&$% happened. Darn it! :(
Must be the planet alignment or something. Just scrapped my 386sx33 today.
Your problem just well be just the cmos battery or just a shady contact/connection. Here's hoping. Good luck.

Modular blah. A phillips screw driver and hammer are the only tools you need on a clone ;)
 

barythrin

Veteran Member
Joined
Oct 5, 2005
Messages
6,256
Location
Texas
Yeah, definitely an easy and quick test would be to remove and reinstall the common components, (RAM and CPU). It doesn't give you a beep code or error code on the screen though? A bit tough to tell what's happening if it's failing during POST. Probably worth giving the motherboard a quick look for bulging or burned out capacitors.
 

[UFO]

Experienced Member
Joined
Feb 6, 2012
Messages
56
Location
Spain
Problem spotted: IDE controller seems dead. I will look for an ISA adapter. Phew! :)
 
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