View Profile: fritzeflink - Vintage Computer Forum

Today, 01:46 PM

lowen replied to a poll System architecture for a Z380 TRS-80 compatible. in Tandy/Radio Shack

I will certainly keep that in mind, and I appreciate your offer!

17 replies | 253 view(s)

Today, 12:17 PM

lowen replied to a poll System architecture for a Z380 TRS-80 compatible. in Tandy/Radio Shack

Indeed! :-) As a bonus the Z380 is still an active component and can be ordered new. Z280 hasn't been new in 23 years. The typically...

17 replies | 253 view(s)

Today, 05:25 AM

lowen replied to a thread Z'DOS Model I & III on eBay in Tandy/Radio Shack

See http://www.trs-80.com/wordpress/multidos/trs-80-dos-multidos-5-zdos/ for the scoop on Z'DOS.

1 replies | 59 view(s)

Today, 04:53 AM

lowen replied to a poll System architecture for a Z380 TRS-80 compatible. in Tandy/Radio Shack

Thanks for the thoughts! You're very right when you say using an ARM just feels wrong; and yet TRS-IO uses an ESP32.... Storage emulation especially...

17 replies | 253 view(s)

January 16th, 2021, 11:54 AM

lowen replied to a poll System architecture for a Z380 TRS-80 compatible. in Tandy/Radio Shack

Care to elaborate any on those choices?

17 replies | 253 view(s)

January 16th, 2021, 06:51 AM

lowen replied to a thread Why does TRS-80 Model III/4 corrupt inserted disks on power-on/off? in Tandy/Radio Shack

The Tandon and Texas Peripherals (a joint Tandy/Tandon venture) drives that Tandy used in the Models I, III, and 4 (until the 4D) lacked a proper...

8 replies | 141 view(s)

January 14th, 2021, 12:59 PM

fritzeflink replied to a thread 8080 disassembler in CP/M and MP/M

@durgadas311 it works, I had a typo :-) @mike_z I use the dazzlestar since the 80th. I just took a look onto my MYZ80 Z3plus as I know where...

13 replies | 234 view(s)

January 14th, 2021, 07:13 AM

fritzeflink replied to a thread 8080 disassembler in CP/M and MP/M

My dazzlestar run well under CP/M and I even just take a look onto @durgadas311 JAVA version of dazzle. It's nice - I only like to get some...

13 replies | 234 view(s)

January 14th, 2021, 05:45 AM

lowen replied to a poll System architecture for a Z380 TRS-80 compatible. in Tandy/Radio Shack

Hi, Fritz! Good to see you around!

17 replies | 253 view(s)

January 14th, 2021, 05:32 AM

fritzeflink replied to a poll System architecture for a Z380 TRS-80 compatible. in Tandy/Radio Shack

Hi lowen... I'm with you.;)

17 replies | 253 view(s)

January 14th, 2021, 02:09 AM

lowen replied to a poll System architecture for a Z380 TRS-80 compatible. in Tandy/Radio Shack

You mention two of the Z380's killer features. The greatly expanded instruction set is another. This is an excellent question, by the way, as too...

17 replies | 253 view(s)

January 13th, 2021, 07:12 PM

lowen replied to a poll System architecture for a Z380 TRS-80 compatible. in Tandy/Radio Shack

For something to drop in to an existing system, you basically have the Z180 (in either Z80180 or Z8S180 form, or even the HD64180) or the Z280. ...

17 replies | 253 view(s)

January 13th, 2021, 07:03 PM

lowen replied to a poll System architecture for a Z380 TRS-80 compatible. in Tandy/Radio Shack

First, thanks for the question, because one of the biggest lessons I learned in 2020 is that 'feeping creaturism' is the enemy. I want to be as...

17 replies | 253 view(s)

January 13th, 2021, 05:37 PM

lowen started a poll System architecture for a Z380 TRS-80 compatible. in Tandy/Radio Shack

So, after a lot of investigation and thought, I have found that it really isn't feasible to make a 100% compatible super TRS-80 using an eZ80F91 as...

17 replies | 253 view(s)

January 13th, 2021, 07:21 AM

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

Well, this is a real quandary. I want a couple, but I don't want to get them and them sit in a box and potentially not be able to find them when I...

7 replies | 272 view(s)

January 13th, 2021, 07:09 AM

lowen started a thread 2021 Vintage plans, and 2020 lessons learned. in General Vintage Computer Discussions

One of the neat things about being a member of this group, is to read the huge variety of projects being worked on by so many various people. ...

1 replies | 93 view(s)

January 12th, 2021, 08:31 PM

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

I don't think you're on the one I'm talking about; I haven't seen you join yet. I'm on my phone and not at a PC right now, so a short reply.......

11 replies | 305 view(s)

January 12th, 2021, 08:26 PM

lowen replied to a thread For sale in Vintage Computer Items For Sale or Trade

Mr. Martin, who knows, your stuff may show up when you least expect it; never give up hope.

37 replies | 4726 view(s)

January 11th, 2021, 01:30 PM

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

Hmm, may need an invite. There is a SteveH there, but I guess that's NOT you.... so I've PMed you an invite; it expires in 24 hours. You have...

11 replies | 305 view(s)

January 11th, 2021, 11:01 AM

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

While I know you're very experienced with vintage machines, you may want to review the jumpering on the drive, as the TRS-80 line is somewhat...

11 replies | 305 view(s)

January 11th, 2021, 04:20 AM

fritzeflink replied to a thread National Semiconductor 32000 items wanted in Vintage Computer Items Wanted

No, my MX300/10 isn't fore sale but some documents are there. http://www.cpu-ns32k.net/ http://www.cpu-ns32k.net/Siemens.html

3 replies | 500 view(s)

January 10th, 2021, 07:05 PM

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

If I remember correctly, /DISKIN indicates an IN from one of the FDC ports; it's basically a board READ select. It's generated by pin 11 of U48, a...

11 replies | 305 view(s)

January 10th, 2021, 01:58 PM

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

I sure appreciate your expertise in this; I've lived with these effects all my life, and it's always a bit comforting to have professional...

12 replies | 361 view(s)

January 10th, 2021, 05:58 AM

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

I will agree that, if your eyes are good enough, an optical instrument is superior. But having said that, my eyes aren't good enough. I was born...

12 replies | 361 view(s)

January 9th, 2021, 07:57 AM

lowen replied to a thread Model II/16 Floppy Disk Image Sizes. in Tandy/Radio Shack

This sounds pretty interesting, but the Facebook Group is private; can you send a link directly to the open-source WD1001 project? The code isn't...

11 replies | 499 view(s)

January 7th, 2021, 07:51 PM

lowen replied to a thread 26 Pin Floppy Drives in Later PCs

My Tektronix TDS360 scope has a 26-pin slim 3.5" drive; I have an HxC Slim to put in it, just haven't done so yet. I have a couple of combo...

10 replies | 383 view(s)

January 7th, 2021, 04:22 AM

lowen replied to a thread Model II keyboards in Tandy/Radio Shack

First, I hope you get well soon! Second, no need to apologize to me, I didn't take any offense; no worries. But thank you for your graciousness. ...

17 replies | 623 view(s)

January 7th, 2021, 04:13 AM

fritzeflink replied to a thread Using just a usable portion of an oversized physical hard drive with DOS 6.22 in Vintage Computer Hardware

My 2ct. for using a CF card with 386 cpu and I even would like to get a CF card working with my 386. The system has a transcent 256mb IDE Flash...

30 replies | 911 view(s)

January 6th, 2021, 09:29 PM

lowen replied to a thread Model II keyboards in Tandy/Radio Shack

Note that you posted while I was composing this reply; I'm using my phone, and have been typing and editing for over an hour, it feels like...but I...

17 replies | 623 view(s)

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