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I just checked DR-DOS 3.31 on PCjs and it has the far call at PSP:50h. Not surprising since DR-DOS was compatible enough that Microsoft created the...

I'd wager your problem is a lack of conventional memory. Adding more RAM won't fix that

Even though I have a decent Hakko desolder gun, I use a pretty inexpensive Chinese soldering Iron:...

I would love to modify my Pets datasette (and C64 ones as well), so I can import audio data right into them. I honestly dont care if some people...

OpenDOS (DRDROS 7) lists support for PSP:50h.

IBM designed the Multistation (5550) before the PC-98. The specifications were similar except IBM included much better displays at a much higher...

Something is wrong with your setup. Commander Keen 5 lists required RAM as 565K so a 2MB system should have no problem with any of the earlier DOS CK...

There was a time when 2MB of memory wasn't considered to be "paltry". Consider a 1960s supercomputer, the CDC 6600. 128KiW maximum memory--that...

Thanks for doing the investigation! :thumbsup: Not that I'm likely to use old DOS versions nowadays, but you never know. FreeDOS has it; I...

Oh, really? Do tell. AFAIK you're speaking of the IBM 3363 Optical drive of 200MB capacity in 5.25" disc form factor:...

It's not, I checked every version of DOS for my website. See info here - https://sites.google.com/site/pcdosretro/dostables Also my History of DOS...

That makes sense for old programs that have been auto-translated from x80 code. It was certainly the case for SuperCalc. I'll have to boot an old...

I believe that code has been there since DOS 2.0. The file inc\pdb.inc has the comment "portable method of system call". Of course no known program...

I just realized that our club had a posting here. It's out of date though, so here's the new critical info for anybody looking. Location: Cowork...

Yes, its just standard IDE. That would explain that then.

Could be. But these guys want to know much too much. I don't mind to share some info but things like my telephone number and the company I work for...

I found the mouse.com file from IBM online, and installed it instead. Works much better! Thanks!

That's not an IDE interface, it's a Panasonic interface. Is your optical drive IDE? If so, that's why it's not working.

Its a CT2770, SB16 Value. Had alot of trouble finding drivers for it, only found Windows 3.1 drivers which broke my Win 95 install. There are also...

Thanks! That's really good to know that they should be compatible. I don't know if I'll have any other way of transferring data between systems....

I've used these guys for oddball or obsolete connectors. Looking, they have several 50 pos/100 pin 3.18 mm spacing possibilities for pretty good...

The sound card that you were using that had the IDE channel on it, what card was it? You most likely need to install drivers for it before the...

I unfortunately don't have any ISA IDE controllers.

What kind of filter element was used on these? While my rack mount Straight 8 has filters on the intake fans in the bottom of the racks none of my...