View Profile: Dwight Elvey - Vintage Computer Forum

January 17th, 2021, 10:47 PM

Dwight Elvey replied to a thread Aim-65 video card mystery in Vintage Computer Hardware

The video card manual is on the web someplace. The cards were made in a Euro card like format and a STD bus like card. Neither cards were compatible...

23 replies | 348 view(s)

January 14th, 2021, 06:12 AM

Dwight Elvey replied to a thread Pet 2001 Video Ram Adapters in Commodore

If it is that black rubber foam, that is not good stuff. At some point the rubber will break down and rot the leads. The best way is to wrap them in...

7 replies | 211 view(s)

January 13th, 2021, 07:29 AM

Dwight Elvey replied to a thread Dr. Suding questions in General Vintage Computer Discussions

We all know there are differences in the flags. Still, none of the test to that point had tested that difference. It looked good for a short time,...

21 replies | 501 view(s)

January 12th, 2021, 01:24 PM

Dwight Elvey replied to a thread Dr. Suding questions in General Vintage Computer Discussions

Other than the instruction set, the design of the Z80 was not an exact copy of the 8080. There is no question that Faggin copied a lot of the main...

21 replies | 501 view(s)

January 8th, 2021, 07:28 AM

Dwight Elvey replied to a thread 4xAA BIOS battery replacement not working in Vintage Computer Hardware

Diodes are not linear devices. The voltage drop is about 0.65V for a reasonable current. For a 1N4148 that would be in the ma range. Hopefully, the...

47 replies | 1627 view(s)

January 4th, 2021, 07:33 PM

Dwight Elvey replied to a thread IMSAI 8080 / RAM17 / NorthStar / VSG / 88-2SIO and CP/M in S-100

I'm curious as to how one get N* dos to run on a S100. Does the N* have firmware on the mother board or is that just for I/O and the disk controller...

8 replies | 410 view(s)

January 2nd, 2021, 06:01 PM

Dwight Elvey replied to a thread Priam V150 exploded part, can anybody identify ? in Other

One can tell if there is a short on the power line but you may not be able to identify which one. Don't depend on beeping as an indication of being...

16 replies | 539 view(s)

January 2nd, 2021, 12:34 PM

Dwight Elvey replied to a thread Priam V150 exploded part, can anybody identify ? in Other

Not all drive will damage the platters but some have a sharp edge on the back and will cut a chunk of the platter out. You'd need to replace the...

16 replies | 539 view(s)

December 30th, 2020, 03:42 PM

Dwight Elvey replied to a thread 4xAA BIOS battery replacement not working in Vintage Computer Hardware

6V may be too high. The original battery was likely a 4.8V NiCad, not 6V. Dwight

47 replies | 1627 view(s)

December 25th, 2020, 05:55 AM

Dwight Elvey replied to a thread Broken CRT mounts, how might I fix this? in PCs and Clones

This would require removing the fragile plastic bezel. That is what is trying to be avoided. Dwight

13 replies | 565 view(s)

December 24th, 2020, 08:36 PM

Dwight Elvey replied to a thread Broken CRT mounts, how might I fix this? in PCs and Clones

I like the idea of small triangle gussets. Dwight

13 replies | 565 view(s)

December 23rd, 2020, 11:59 PM

Dwight Elvey replied to a thread Broken CRT mounts, how might I fix this? in PCs and Clones

Use JB weld. Use the slow setting, not the quick setting. You may need to grind the ends of the mounts to get them through the ripped metal. Wipe all...

13 replies | 565 view(s)

Dwight Elvey
Senior Member

Mini Statistics

Recent Visitors

Basic Information

About Dwight Elvey

Statistics

Total Posts

General Information

Dwight Elvey Senior Member

Mini Statistics

Recent Visitors

Basic Information

About Dwight Elvey

Statistics

Total Posts

General Information

Dwight Elvey
Senior Member