Activity Stream

For what it's worth--and I don't know if it has any bearing on your issue--I find that NOS DSHD 5.25" floppies tend to not format up as well as DSDD...

I’ve got an extra WD1002S-WX2. It’s got a wide bracket so it might be for 5150 or an early clone.

I have a couple of boards I can send with some RAM if you want for $100, I'll see which ones I have that have 3.3V support. I have one on eBay here...

Excuse me while I indulge is some massive hand-wavy simplistic statements :) I think there are 2 reasons that the TRS-IO uses an ESP32: 1)...

Unfortunately, I do not have another 1.2MB drive. And yes, this is a recent acquisition that I'm testing out the first time. I'll see if I can grab...

The latter could be the case. My XT clones have the Omnibridge and DTK Mini-micro boards; the former is WD37C65-based, the latter 8473.

*coughs softly* The nicad bomb looked like it leaked a bit in the pictures, but hopefully I can fix it. Paid too much, but I have been looking...

Ok. Yeah I think these caps may be different brands and thus may not be the same. I don't see the usual capacitor 'cheese coming out the tops where...

It's not CP/M 3, but it is possible to port CP/M 2.2 to banked-RAM systems and get a 61+kB TPA. I've done this for the NC200. The BIOS bank manually...

Hi Greg, You need to be a little bit careful with what you are looking at on a scope / logic analyser. You need to know what is happening on the...

See the photos of electrolytic capacitors at here]. By "triangles", I presume that you are referring to the triangular segments shown in the second...

Curiosity, not specifically in topic, but, maybe. Can the Z380 work with "virutal Z80s"? Like, more than one? Specifically, say you had a native...

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

I am fairly certain that the original IBM PS/2 mice will not work with a PS/2 to serial adapter. I didn't like that mouse from a comfort standpoint...

You are not seeing any issues at all using 360K floppies, so this does not sound like a 'dirty heads' issue. What is the background of the subject...

I snared a (relatively) cheap DE1 last year to run CoCoFPGA - happy to try some cross testing if you go that way and it will help. So long as you...

This might have been easier if I had an M8650 to look at. What makes it confusing is the use of the default jumpers. On a board used for codes 03...

Jos, Would it be easier to change the IO address in one of the ROMs so the RTC and AUXMEM have different IO addresses? Monty

My artwork in case anyone is interested...

With such a nice looking Logic Analyser... it would be nice to see.. RA1, RA2, RA3, RA4 and RA5 all found at H9. Also... Nice to see nCAS0 and...

I tested it in another 5160 that had a hard drive, but the computer I want to install it in does not currently have a hard drive or controller.

This is my immediate problem too, I have both a GW and FE but can't find a 40 track drive. Well, unless I dismantle either my RML380Z or TRS80 Model...