View Profile: DeltaDon - Vintage Computer Forum

Today, 03:14 AM

DeltaDon replied to a thread Any Epson QX-16 owners out there?? in CP/M and MP/M

Got'cha. I don't recall what I paid for my QX-16 (maybe $200-$250), but I got it back when there were quite a few QX-10's on the market and 3 or 4...

54 replies | 1180 view(s)

Yesterday, 05:47 PM

DeltaDon replied to a thread Tandon TM-100-2 drive problems in CP/M and MP/M

Jon, I guess the SB is one weird system and I know oh so little about it. Sounds like each computer needed hand tweaking since resistors and cap's...

8 replies | 139 view(s)

Yesterday, 05:34 PM

DeltaDon replied to a thread Any Epson QX-16 owners out there?? in CP/M and MP/M

Gordon, I forgot, what exactly are you missing to have a working system? Was any of the missing items promised in the auction?

54 replies | 1180 view(s)

Yesterday, 09:21 AM

DeltaDon replied to a thread Surface mount soldering magnification with a used $50 document camera? in General Vintage Computer Discussions

Yes, I was diagnosed with this condition when I first went to school at age 5 or 6 and wore a patch for a couple of years. Didn't do much good and...

12 replies | 265 view(s)

Yesterday, 08:56 AM

DeltaDon replied to a thread Tandon TM-100-2 drive problems in CP/M and MP/M

Per Herb Johnson's website the Tandon 100-2 is a 40 track drive. https://www.retrotechnology.com/herbs_stuff/tandon_TM100.html

8 replies | 139 view(s)

Yesterday, 08:53 AM

DeltaDon replied to a thread Any Epson QX-16 owners out there?? in CP/M and MP/M

I contacted a company that sells keyboard foam replacement kits for Keytronic keyboards in the hopes of receiving a single foam piece to see if it...

54 replies | 1180 view(s)

January 13th, 2021, 01:08 PM

DeltaDon replied to a thread Any Epson QX-16 owners out there?? in CP/M and MP/M

Gordon & Robert, I ran into a major problem (for now) my keyboard has about a 1/3 of the keys not working. I pulled it apart hoping Epson used...

54 replies | 1180 view(s)

January 13th, 2021, 05:09 AM

DeltaDon replied to a thread Any Epson QX-16 owners out there?? in CP/M and MP/M

Gordon, I must have 100 laptop bricks floating around here, so I don't need one. I'm not sure what band of voltage(+/- X) is to not going to...

54 replies | 1180 view(s)

January 12th, 2021, 12:49 PM

DeltaDon replied to a thread Any Epson QX-16 owners out there?? in CP/M and MP/M

Success! I got some time to mess with powering up the QX-16 with the video cable running to the monitor. Turned on the QX and my bench power...

54 replies | 1180 view(s)

January 12th, 2021, 06:58 AM

DeltaDon replied to a thread Any Epson QX-16 owners out there?? in CP/M and MP/M

Progress update. I took a closer look at the suspect cap's in my monitor and realized that the tops were domed from epoxy and not due to bulging. So...

54 replies | 1180 view(s)

January 10th, 2021, 05:54 AM

DeltaDon replied to a thread S-100 bus pin assignments new and old. in S-100

Glad to help out. OBTW, I found those lists some time ago when trying to figure out why a 256K RAM board won't play nice with my otherwise operating...

3 replies | 186 view(s)

January 9th, 2021, 07:33 AM

DeltaDon replied to a thread Any Epson QX-16 owners out there?? in CP/M and MP/M

Here's a good old Epson QX10/16 thread posted in a google group: https://groups.google.com/g/comp.os.cpm/c/p2bBENe_ow0 Plus difference between...

54 replies | 1180 view(s)

January 6th, 2021, 01:36 PM

DeltaDon replied to a thread Soldering station heating element replacement in Vintage Computer Tools

Will this work: ...

3 replies | 142 view(s)

January 4th, 2021, 03:03 PM

DeltaDon replied to a thread S-100 bus pin assignments new and old. in S-100

Google is your friend. But since you asked: http://retrotechnology.com/herbs_stuff/s100bus.html Note IEEE-696 defined new use next to each...

3 replies | 186 view(s)

January 4th, 2021, 01:09 PM

DeltaDon replied to a thread Any Epson QX-16 owners out there?? in CP/M and MP/M

Adding more to put everything in one thread. QX-10 video is 80 x 25 lines plus in graphics mode is 640 x 400. Horz. frequency = ?, Vert frequency...

54 replies | 1180 view(s)

January 4th, 2021, 12:42 PM

DeltaDon replied to a thread Any Epson QX-16 owners out there?? in CP/M and MP/M

Thanks for the info. Plus I'm adding the following to my last post. I guess the QX video is somewhat like the IBM PC MDA video, but is the lacking...

54 replies | 1180 view(s)

January 4th, 2021, 12:26 PM

DeltaDon replied to a thread Any Epson QX-16 owners out there?? in CP/M and MP/M

Okay, I dug out my Q702A Green CRT monitor and read the labels on the back. It states it is for use with Q701, Q801 or Q916 A,B or C models. A second...

54 replies | 1180 view(s)

January 4th, 2021, 06:31 AM

DeltaDon replied to a thread Any Epson QX-16 owners out there?? in CP/M and MP/M

I guess I'll dig out my system and rig up a power supply to my QX-10 monitor and see what happens. Worst case I've wasted a few hours and have no...

54 replies | 1180 view(s)

January 3rd, 2021, 06:03 AM

DeltaDon replied to a thread Any Epson QX-16 owners out there?? in CP/M and MP/M

My guess? is that the QX-16 at first used the same monochrome monitor as the QX-10 and perhaps Epson found that the power supply was overloaded and...

54 replies | 1180 view(s)

January 3rd, 2021, 05:39 AM

DeltaDon replied to a thread Any Epson QX-16 owners out there?? in CP/M and MP/M

Gordon, The following is quoted from the site I referenced earlier: "QX-10 monitor cable 7-pin 8-pin monitor QX-10 function wire...

54 replies | 1180 view(s)

January 2nd, 2021, 05:46 AM

DeltaDon replied to a thread Any Epson QX-16 owners out there?? in CP/M and MP/M

My previous post provides the pin out of the video cable -- at both ends. Since we're using a QX-10 CRT the connector on it has the wires internally...

54 replies | 1180 view(s)

January 1st, 2021, 02:17 PM

DeltaDon replied to a thread Any Epson QX-16 owners out there?? in CP/M and MP/M

I don't believe the QX computers use a PC video card.

54 replies | 1180 view(s)

January 1st, 2021, 02:11 PM

DeltaDon replied to a thread Any Epson QX-16 owners out there?? in CP/M and MP/M

QX-10 video cable details: https://fjkraan.home.xs4all.nl/comp/qx10/qx10.html Notice the last line that refers to the Horz. & Vert. frequencies...

54 replies | 1180 view(s)

January 1st, 2021, 09:11 AM

DeltaDon replied to a thread Any Epson QX-16 owners out there?? in CP/M and MP/M

I think I posted that the QX-16 monitor has an internal power supply. The QX-10/11 CRT gets +12VDC via the video cable from the CPU unit. Same...

54 replies | 1180 view(s)

December 31st, 2020, 07:24 AM

DeltaDon replied to a thread Any Epson QX-16 owners out there?? in CP/M and MP/M

From memory, I have the CPU unit with two 5.25 drives, a video cable and a keyboard with cable. No mouse or printer cable. Mine came in the original...

54 replies | 1180 view(s)

December 30th, 2020, 09:47 AM

DeltaDon replied to a thread Valuation Opinions - Wordstar 2000 R2 in General Vintage Computer Discussions

Yeah, I remember the discounted offers and I did buy a Windows version at one point. A much nicer WYSIWYG program that one didn't need to remember...

9 replies | 460 view(s)

December 30th, 2020, 09:29 AM

DeltaDon replied to a thread Any Epson QX-16 owners out there?? in CP/M and MP/M

QX-11 was the 3.5" drive model. I got that from the QX-10/16 wiki page that has a few details on the various models, keyboards and OS systems. I...

54 replies | 1180 view(s)