Recent content by eeguru

Unfortunately I have to liquidate some of my collection. I'm starting with the NIB items that really only ever sit on a shelf. If anyone is interested, please take a look: IBM 5170 PC/AT Desktop - P/N 6134298 - New Old Stock (in Box) IBM PC 5150 Desktop - New old sock (in box) w/o Keyboard...

If you love your pets, leave them at home!

There are lots of errors, but it's a good start. I've started looking at it over the last few days. The signals you have labeled FDD and HDD are not for the disk drives. The HDD path is feeding the DC/AC boost converter for the electroluminescent backlight. The path labeled FDD is feeding...

Uhm... did @eightbitter just post the holy grail for 1400HD owners?!? I have maybe10-11 HDs and all but one have bad PSUs. AFAIK nearly all 1400HDs at this point have a failed or failing PSUs. I've had on my bucketlist for a long time to build and sell a low-cost PSU replacement PCB w/ a...

I'm partial to a couple in my collection: - SPARCserver 20 w/ dual Ross 200 MHz hyperSPARCs, 384 MB RAM, 2x VDIMMs w/ Aux output, fast-wide SCSI w/ 320 GB disk, 100 Mbps Enet, FDDI, and Cyrix 5x86 CPU board - Ultra Enterprise 6500 w/ 24x 400 MHz ultraSPARC IIs, 24 GB RAM, FDDI, OpenGL graphics...

I doubt you are planning on in-circuit flash/reflash, but if you are, keep in mind the preambles need to be written at offsets beyond 16KB. JR-IDE is reflashable in-circuit, but only because I can pan an additional 16KB page frame around the entire 512KB part.

A lot of the 4800 bps telco standards were for always connected leased lines (eg Bell 208, etc). I don't recall any consumer nor USR modems that maxed at 4800 symbols per second. And as has already been pointed out, MNP is a form of data compression. It allows up to 4800 bits per second to...

Don't encourage the OP. He's a newly-wed and I want him to celebrate his 1 year anniversary w/o a divorce....

Intel RapidCAD was direct marketed in box.

Does anyone know (definitively) if a 486SLC2 is both pin-for-pin and voltage rail - ie. a true drop-in replacement - for a 386sx? And I mean desolder the sx and solder-in the slc2. I've read conflicting information online. Since the 386 members require a CLKx2 input, I assume the SLC runs at...

I have a couple dead and one dying Amiga 2000s - the later with extensive battery leakage but still works. I was planning on replacing the MB in the dead ones with the rescan/remake by Floppy209. However I'm making a few enhancements first - like using 30 pin SIMMs, ATX power connector, and a...

What do pangolins taste like anyway? Are they anything like Tasty Wheat?

I have a few Weller WX2 stations that I use for everything. Highly recommended.

I go down rabbit holes often and this pleasant distraction came from getting an old machine working and thinking about a related telecom project. I'm not sure where to turn for telephony advice, so I'll ask here in desperation. I had a project sketched up at one point to build a T1/PRI...

Can't recommend them enough. Fabulous work. Pricey $$ but you get what you pay for. This is my umteenth-millionth order from them and not sure if you can tell which two brackets are from them and which one is an original: Not a compensated endorsement.