View Profile: Eudimorphodon - Vintage Computer Forum

March 5th, 2021, 08:29 PM

Eudimorphodon replied to a thread Tandy 1000 & 2000 Service Manual & 1000A Supplement available for download in Tandy/Radio Shack

Thank you for finally putting out there a copy of the 1000A schematics! Bits and pieces of the 1000A supplement seem to be floating around but this...

6 replies | 116 view(s)

March 4th, 2021, 11:18 AM

Eudimorphodon replied to a thread Video output over parallel port? in Vintage Computer Hardware

To test a bare Tandy 1000 HX motherboard before hacking together a keyboard I made a boot disk with an ancient version of PC Anywhere on it set up to...

15 replies | 219 view(s)

March 3rd, 2021, 04:34 PM

Eudimorphodon replied to a thread Best SSD option for vintage PCs in Vintage Computer Hardware

Slightly related funny story: back in the day ("day" being 2004/2005 timeframe) I noticed the "platform" guy at work was using some PATA disk drives...

21 replies | 301 view(s)

March 3rd, 2021, 09:51 AM

Eudimorphodon replied to a thread Best SSD option for vintage PCs in Vintage Computer Hardware

Frankly with that vintage of software once you have a device that can do, I dunno, a couple megabytes per second in sustained read speeds, which...

21 replies | 301 view(s)

March 3rd, 2021, 08:06 AM

Eudimorphodon replied to a thread Best SSD option for vintage PCs in Vintage Computer Hardware

I did specifically say with reads. Yes, "simple" flash devices suck with writes. Granted I've hardly ever cared about write performance because,...

21 replies | 301 view(s)

March 2nd, 2021, 06:17 PM

Eudimorphodon replied to a thread Best SSD option for vintage PCs in Vintage Computer Hardware

FWIW, there are CF cards that do support TRIM, but you also need OS support for it to make a difference, and I can't off the top of my head think of...

21 replies | 301 view(s)

March 2nd, 2021, 10:57 AM

Eudimorphodon replied to a thread Cheapo multimeters in General Off Topic

Cheap multimeters with analog meters are junk (as are older analog ones that haven't been well preserved), but I've had mostly positive experiences...

27 replies | 342 view(s)

February 26th, 2021, 03:28 PM

Eudimorphodon replied to a thread Model 3 video output. in Tandy/Radio Shack

The Model III's basic scan frequencies are roughly NTSC compatible, but the machine uses a really slow dot clock for its 64 column (512 dot wide)...

10 replies | 252 view(s)

February 25th, 2021, 07:49 PM

Eudimorphodon replied to a thread Printing from an old computer using a new USB printer in Vintage Computer Hardware

My point was that unless you pay someone to put it together for you a raspberry Pi or anything else (and I guess I got confused by the repeated...

22 replies | 453 view(s)

February 25th, 2021, 07:14 PM

Eudimorphodon replied to a thread Printing from an old computer using a new USB printer in Vintage Computer Hardware

Have to admit I'm left scratching my head exactly how buying a single-board computer automatically helps with this situation. (Granted we have no...

22 replies | 453 view(s)

February 25th, 2021, 11:56 AM

Eudimorphodon replied to a thread End of an Era - Frys gone in General Off Topic

Looking back it feels like Christmas 2018 was their last Hail Mary attempt to pull back from the Event Horizon of the black hole that had been...

51 replies | 912 view(s)

February 25th, 2021, 11:08 AM

Eudimorphodon replied to a thread Printing from an old computer using a new USB printer in Vintage Computer Hardware

This question requires a lot more information to answer meaningfully. (The big one being the exact vintage and platform.) I've successfully played...

22 replies | 453 view(s)

February 10th, 2021, 12:36 PM

Eudimorphodon replied to a thread 8086 based IBM compatible PC schematics in PCs and Clones

You'll probably need to bake your own BIOS if you leave out DMA. Bad suggestion: I think there's a disassembly of the original Tandy 1000 BIOS out...

17 replies | 1349 view(s)

February 10th, 2021, 12:30 PM

Eudimorphodon replied to a thread 8086 based IBM compatible PC schematics in PCs and Clones

This is off the top of my head, but I'm reasonably certain that with the 808x all addresses are byte-sized, which means that: * 16-bit...

17 replies | 1349 view(s)

February 10th, 2021, 08:37 AM

Eudimorphodon replied to a thread Looking for very special portable pc with color monitor in Later PCs

The Compaq's monitor is indeed not composite, it has an analog video line for the grayscale and separate sync lines. But for the record, the reason...

12 replies | 585 view(s)

February 8th, 2021, 08:37 AM

Eudimorphodon replied to a thread Looking for very special portable pc with color monitor in Later PCs

Shadow mask pitch is also a significant factor when you get down to sub-13" color CRTs. Most tubes that small just can't physically quite do 640...

12 replies | 585 view(s)

February 5th, 2021, 03:26 PM

Eudimorphodon replied to a thread VT320 - Replace CRT with LCD? in DEC

Between the info on that page about making custom fonts for the terminal and pictures of the display showing pretty wide "scanlines" I think its...

17 replies | 960 view(s)

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