View Profile: TheDrip - Vintage Computer Forum

Yesterday, 08:09 AM

TheDrip replied to a thread Tandy dmp-300 malfunction in Tandy/Radio Shack

It would help greatly if we knew your location. Keep in mind this is a very multinational forum so finding semi local help is easier if we know where...

1 replies | 29 view(s)

January 14th, 2021, 07:06 PM

TheDrip replied to a thread Model 4 S/N 14897 in Tandy/Radio Shack

After a little fighting, and reading, and fighting and tracing wires.... the 4D/4P have the two pots for brightness and contrast wired slightly...

23 replies | 1063 view(s)

January 14th, 2021, 02:43 PM

TheDrip replied to a thread Adding a CF card slot to a 5170 without wasting an expansion card bay? in PCs and Clones

Back to the OP's questions ... The battery slot would make a great place to keep the CF card, and "mangling" a card bracket would be a neat and...

18 replies | 342 view(s)

January 13th, 2021, 02:49 PM

TheDrip replied to a thread TRS-80 Model II/12/16/16b/6000 Expansion Card Protoboards. in Tandy/Radio Shack

Is there a common address/IO decoding circuit that would be used on most boards? Maybe something for Rev B (Not V2, the card plainly says Rev A). ...

7 replies | 238 view(s)

January 13th, 2021, 09:00 AM

TheDrip replied to a thread Is hard disk failure because of HDD 0 having 2 partitions and HDD 1 having 1: 2+1=3? in Vintage Computer Hardware

SpeedStor, not Speed Store. http://www.minuszerodegrees.net/software/speedstor.htm

9 replies | 143 view(s)

January 13th, 2021, 08:47 AM

TheDrip replied to a thread OEMs & clones on eBay (continuous listings) in Vintage Computer Auctions

I was the 2nd bidder, but its not exactly what I want in a Model 25 and I'm sure the 286 upgrade card will take the price way past what is...

461 replies | 81452 view(s)

January 12th, 2021, 08:23 PM

TheDrip replied to a thread Model 4 S/N 14897 in Tandy/Radio Shack

I knew I read that somewhere. The pinout from the 3/4 board to the 4D/4P board changes. All I need to do is repin. I hope.

23 replies | 1063 view(s)

January 12th, 2021, 07:14 PM

TheDrip replied to a thread Model 4 S/N 14897 in Tandy/Radio Shack

Next problem..... cleaned the top enough that my wife allowed it in the house. Plugged into my 4 and.... very bright raster. brightness/contrast...

23 replies | 1063 view(s)

January 12th, 2021, 05:03 PM

TheDrip replied to a thread Model 4 S/N 14897 in Tandy/Radio Shack

Parts are here. 4D case, TEC drives, CRT card and Green CRT. Survived the trip, definitely been on a shelf for years, as described!

23 replies | 1063 view(s)

January 12th, 2021, 03:19 PM

TheDrip replied to a thread Problem with Expansion Interface in Tandy/Radio Shack

What would be at 3E00 ? Is that one of the FreHD ROMS, or is that a ROM onboard the EI I know nothing about Model 1's, just recognized the 15872...

4 replies | 113 view(s)

January 11th, 2021, 04:38 PM

TheDrip replied to a thread Can anybody help identify this 80s machine? in Other

Any chance it was a Merlin? Doesn't exactly match your descriptions but they were pretty ubiquitous in the early 80s.

3 replies | 142 view(s)

January 10th, 2021, 06:59 PM

TheDrip replied to a thread On to the next problem: Model 4 FDC issues in Tandy/Radio Shack

Have you cleaned the head and relived the slider yet? Simplest solution first.

11 replies | 266 view(s)

January 10th, 2021, 11:27 AM

TheDrip replied to a thread Bought some random stuff in General Vintage Computer Discussions

28 pins populated, so a single db-25 wouldn't have sufficed. Maybe the other box with the db25 + db15 and a very creative cable?

14 replies | 315 view(s)

January 10th, 2021, 11:03 AM

TheDrip replied to a thread Bought some random stuff in General Vintage Computer Discussions

Sure enough, that connector looks like a d-sub 51. That is a thing according to Google but I've never heard of it before. Mouser still sells them....

14 replies | 315 view(s)

January 10th, 2021, 10:42 AM

TheDrip replied to a thread Model 4 video problem in Tandy/Radio Shack

Glad to hear it's fixed, that would explain why the pot wasnt having an effect

9 replies | 198 view(s)

January 9th, 2021, 05:00 PM

TheDrip replied to a thread Model 4 S/N 14897 in Tandy/Radio Shack

Well that sort of worked. Replacing IC201 AN5763 V-Process has solved the vsync changing issue. VSync is now rock solid no matter how long the...

23 replies | 1063 view(s)

January 9th, 2021, 03:47 PM

TheDrip replied to a thread Model 4 video problem in Tandy/Radio Shack

I believe this is the adjustment you're looking for, called HPHASE. When the card is mounted, that is the adjustment pot closest to the back of...

9 replies | 198 view(s)

January 9th, 2021, 03:31 PM

TheDrip replied to a thread Model 4 video problem in Tandy/Radio Shack

That is the 2nd design, large digital board. Its definitely an issue on the CRT card itself. The missing lines aren't missing, they're in the...

9 replies | 198 view(s)

January 9th, 2021, 01:39 PM

TheDrip replied to a thread Model 4 video problem in Tandy/Radio Shack

Can you take a picture of your CRT controller board? There are at least 2 different style boards in the 4 non Gate array. I found the Model 4...

9 replies | 198 view(s)

January 7th, 2021, 10:34 AM

TheDrip replied to a thread New Model F (PC/XT) Keyboards in PCs and Clones

Or any keyboard without a 2" wide border to the case. I think my current 104 key is physically smaller than those "F77 Model F"s with the keypad

10 replies | 396 view(s)

January 7th, 2021, 08:43 AM

TheDrip replied to a thread Intel Dual 486 DX-50 for free in Silicon Valley (local pickup only) in Vintage Computer Items For Sale or Trade

Its only a 16 hour round trip by car for me .... It seems odd that I can buy airfare to fly up and back for about the same money as shipping this...

4 replies | 278 view(s)

January 7th, 2021, 08:40 AM

TheDrip replied to a thread Has a game ever used the IBM 5151's "long" P39 phosphor to get around charset limits? in PCs and Clones

I use a screensaver (fallscr) written by a user here (profdc9) which calls out that the Matrix falling characters effect works especially well on the...

21 replies | 583 view(s)

January 3rd, 2021, 08:44 PM

TheDrip replied to a thread TRS-80 Trash Talk - Live #10 - Saturday Jan 2 at 9pm EST in Tandy/Radio Shack

My apologies to everyone, I just reviewed the recording of last night's Trash Talk Live.... I didn't doubt that my mic was too loud, but I did think...

6 replies | 552 view(s)

January 2nd, 2021, 11:11 AM

TheDrip replied to a thread Model 4 S/N 14897 in Tandy/Radio Shack

Of course, I have one last hail mary part for this video board in the mail and then it will be dead beyond my ability. Last night I un-did all of...

23 replies | 1063 view(s)

January 2nd, 2021, 09:47 AM

TheDrip replied to a thread Need TRS-80 Model IV software on disk! in Tandy/Radio Shack

https://discord.gg/yXSsm3cagq

4 replies | 238 view(s)