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United Chemi-con (subsidiary of NCC) has made shit capacitors for decades. Their KZG and KZE series have pretty much 100% failure rates. Nichicon...

I don't think anyone would care if you reverse engineered a long obsolete expansion card for a long obsolete computer and made reproductions of them....

mSATA is an interesting idea. CF holds the advantage that it's easy to transfer data to something else; SD has the advantage of being cheap but it...

ok, it looks like they're a variant of the Magnetic Peripherals Inc full height drive. I'll post some photos later. The PCB is a little different,...

The oscillator is fine. It’s a horrid circuit anyway... Do you have facilities for programming a 2716 EPROM at all? I suspect what you require is...

No, it's definitely a proprietary card created by Olivetti to add additional planes to the existing VDC. This adds 640x400 16-color support, as well...

It shouldn't require a hard drive, but is somewhat miserable to use if you don't have one.

Added to my watch later list. Very curious to see how much of the history you delve into, as that's been difficult for me to track down.

Capture the screen to a .PCX file, which you can then load into DeluxePaint II Enhanced (you should be able to find this online somewhere).

Welcome. I hope your PET RAM debug odyssey is shorter than mine. My understanding of the two messages you get there is the same as yours for Test...

I spent some quality time with my new storage scope looking at stuff and I think everything I see with respect to the RAM seems plausibly correct. ...

Very much agreed. I don’t think that CF has to be the only media type, if something else is easier, though. SD/uSD cards are definitely available...

The 8 sector thing on early DOS came from the datasheet for the µPD765 FDC. It was overly generous with the gaps, probably on the assumption that...

Cheap, yes - but don't do media mail for anything important - it takes FOREVER and often stuff goes missing. And unlike even first class, there's no...

Thank you for putting up the video.

I tried with this disk set a few months ago. Got pretty far in the process, then it started wanting to put stuff on my C:, but I only have two floppy...

There are pics of the actual board at oldskool.org

Also found these really good programs: PictView. Freeware for DOS. Recognizes over 40 file formats. Can resize and convert between formats. ...

The Tandon single sided drives are TM100-1. There should be an IBM label with a part number on each drive. If you can't find the drive model number,...

The one shown at here] ?

hi! So right now I'm just trying to whack DOS 6.22 on it, as I don't have a DOS 3.x image running on anything. That may change soon; I have...

this card is the same as the STB Super Res 400, no? Show photos. I know there are some posted already somewhere.

I will take a look at any pictures you post and if I recognize anything, I will mention it. I am sure others will also take a look so there is a fair...

Appreciate the use of the picture; snagged (and will attribute you as the source). If you can make a higher-res version of the box, both sides, that...

DOS 2.x upgraded to 9 sector tracks from the 8 sector tracks of DOS 1.x. The 5150 controller and drive should work fine with DOS 2 or later disks....