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Can anyone offer any insight into my latest problem please? I have an IBM AT which currently has an AST Advantage expanding it to 640kB. This works fine and POST counts to 640kB. I wish to remove it and add the below: I have bought the board pictured below. It's marked ASM 55X3543 EC A25158...

I have been lucky enough to be able to purchase the IBM Enhanced Memory Expansion Adapter for my IBM 5170. I also ordered what should have been 8 3 chip 1Mx9 30 pin SIMMS. They don't work in the 5170... The 1Mx8 non-parity portion tests and passes fine in the retro chip tester pro. The parity...

Whilst I’m waiting for the ram chips to arrive from Poland, I want your opinions. Do I replace the broken keyboard feet with the black nylon ones or the CNC aluminium ones?

I got out my 5155 today to find it's poorly. It beeped (1 long, 2 short suggesting a CGA fault) and then proceeded to boot otherwise fine, save quite a bit of graphical corruption and flickering. See photos and video. Some things are constant. Some things are flickering, for example on Edit...

It's not my day... As you'll see from my other post I had no luck with and have had to ask for assistance aligning a floppy drive. Now I have had a recurrence of what I suspect is a boot sector virus. It has wiped out all standard files and folders from my MFM drive when I booted my IBM DOS 3.30...

I have picked up a cheap non-working Tandon TM100-2A. The drive is cleaned and lubricated but I can't get it to align. It's a whole track out! The cam only seems to want to adjust it within the bounds of the one track. I have it reading nicely, just to the wrong track. What do I adjust on this...

The below is more of a log of my activities so I don't forget what I've done and to help others. Inspired by my IBM 4865 and 4869 floppy drives, I embarked on a mission to setup a Gotek floppy emulator to work with my IBM PC XT 5160 and IBM Portable PC 5155. For the purposes of providing power...

My IBM 5155 has a wd1002a-wx1 MFM controller with NEC drive. This works beautifully on its own. I would like to add an XT-IDE so bought the same Blue Lava XT-IDE Deluxe as I have already put in my 5160 with an IBM MFM controller. The XT-IDE works perfectly in the 5155 on its own but put...

I needed a short 8-bit ISA network adapter for my IBM 5155 but couldn't find any in stock or for sensible money, so made my own from skiselev's design (https://github.com/skiselev/isa8_eth). I made 5. I have for sale the remaining 4, all programmed, tested and working. Note the brackets are 3D...

Hi Does anyone have an IBM 4865 720KB external floppy drive they would be willing to sell to me? Preferably a UK seller but I'm willing to pay for international shipping if needed. Thank you mikeyp

So I bought a cheap "untested" Seagate ST412 drive for my IBM PC. For the price it was worth taking the chance. I wasn't particularly bothered with it when it arrived so it went in the garage and sat for a year or so before I got around to taking a look at it. Today I found it and it had two...

Hi all When replacing the cartridge on the HP Thinkjet 2225, it comes with what looks like a little absorbent pad. In the instructions, there is a little graphic which shows it only goes one way around but it doesn't suggest whether the smooth plastic side or the felt side should face the...

Hi all I have an IBM PC XT with a Seagate ST-225 hard drive controlled by an Everex EV391 controller. It spins up, sounds pretty good and low level formats fine. It will run for days without issue so long as it’s not allowed to power off and allowed to go cold. When I power it back on, there is...

Hi all Really weird issue today with my 5160. It's been working fine, no major issues, everything pretty reliable so far. Today I went to put a 2nd floppy drive (Gotek with HxC firmware) in above the hard disk. Connected it up, turned off switch 7 on the motherboard, everything good to go...

Hi all I would really like an IBM XT branded HDD fascia and mounting bracket please like the example below. I don't need the HDD. My ST-225 works fine. I'm based in the UK but obviously happy to pay for shipping. Thank you Michael

I collect old computers and consoles that were relevant to me growing up. My wife despairs. Amongst other things in my collection are: PCs/Laptops: IBM 5160 XT - DOS Toshiba T1850C - DOS/Win3.0 Toshiba T3400CT - DOS/Win3.1 Pentium II laptop - Win 98 Pentium II desktop - Win95/98 Pentium III...

I need some help with resources configuration please. I have an IBM 5160 XT which is, at the moment, period correct. I've tried to install a Soundblaster 2.0 card, however whenever I run utilities like test-sbc or diagnostics, it hangs the system. I realise this is likely some sort of conflict...