Re: [M100] What would it take to build a modern DVI?

The DVI boot code could run on a Z80 emulator however it would be quite a lot of work and the DVI boot code is heavily intertwined with the CRTC and FDC chips as to make it a fruitless exercise. The boot code on the DVI actually formats the sectors for the disk and simply uses the FDC to

Re: [M100] Ask a silly question

I did reverse engineer around 60% of the boot code of the DVI last year to work out how the Video and Floppy were used – most of it is very low level interface software for the FDC chip and some spaghetti code to control the graphics chip. Quite a lot of corners cut and some neat ways to deal

[M100] What would it take to build a modern DVI?

I'm barely into programming so I can't completely visualize how this would be done. I'm thinking you would still need the m100/m102/m200 cable. Then interface the cable to a USB i/o device like https://ameridroid.com/products/usb-io-board The device connects to a modern computer that is

Re: [M100] Ask a silly question

Hey George, I have reverse engineered the Video portion of DVI, at least enough to get 80x25 mode working in VirtualT. I was working on a modern equivalent called TDock, but discovered I had less than zero time between work and two young kids. The idea at the time was to build an expansion

Re: [M100] Ask a silly question

That would be pretty cool! I’ve never seen a modern similar device made for the M100/102 Randy Sent from my iPhone > On Jul 25, 2018, at 9:40 PM, George Rimakis wrote: > > Has anyone managed to reverse engineer this DVI? > > That would be a neat project. > > ~George > >> On Jul 25, 2018,

Re: [M100] Ask a silly question

Has anyone managed to reverse engineer this DVI? That would be a neat project. ~George > On Jul 25, 2018, at 9:30 PM, Randall Kindig wrote: > > Thanks, Brian, that’s very helpful. > > Randy >> On Jul 25, 2018, at 1:12 AM, Brian White wrote: >> >> Randy I never answered your last question

Re: [M100] Ask a silly question

Thanks, Brian, that’s very helpful. Randy > On Jul 25, 2018, at 1:12 AM, Brian White wrote: > > Randy I never answered your last question about the Model 200 cable. > > It's these two items: > > https://www.amazon.com/gp/aw/d/B003PU1EVG/ > > >

Re: [M100] New User - Resurrected T102

One additional note to my Supercap mod, I the cap I listed above it not the correct lead spacing and was hacked in, that particular cap I had on hand from another project, FYI. BR, On Wed, Jul 25, 2018 at 1:36 PM Andy Lawrence wrote: > Hi Greg, > > My wife had some #40 developer, it was the

Re: [M100] New User - Resurrected T102

Hi Greg, My wife had some #40 developer, it was the consistency of water, but I didn't log the necessary info before trashing the container, my apologies. The screen on my T102 isn't in great shape, but I didn't notice any damage from the developer, thought maybe I'd replace it with a piece of

Re: [M100] New User - Resurrected T102

Thanks Kevin, I have some 40 Vol Cream Developer from Sally Beauty for this go. I used some 60 liquid before when I made up my own batch of Retro Brite. 40 should do the trick and I will probably use the Frog Tape just to be sure. God Bless, GregS <>< - Original Message - From:

Re: [M100] New User - Resurrected T102

This video mentions a UK brand, BBlonde, that didn't seem to harm the screen at all. https://www.youtube.com/watch?v=uyi5ZhHzzvo On Wed, Jul 25, 2018 at 1:02 PM, Greg Swallow wrote: > Glad to be of help Andy. > > May I ask which method of Retro Briting did you use. I jave made my own > "cream"

Re: [M100] New User - Resurrected T102

Glad to be of help Andy. May I ask which method of Retro Briting did you use. I jave made my own "cream" compound before, but have gotten the 40 Cream Hair Developer for my next try. A couple of M100 screens got scarred the last time; I used masking tape. This time I've gotten Frog Tape, but am

Re: [M100] New User - Resurrected T102

I've done both. One of my NEC units is a NiCd replacement and the other a super cap. My 200 is a NiCd while my 102 is a super cap. To my surprise I left my 102 without batteries for about 10 days and when I put batteries back into it the RAM was still intact. Not what I expected at all. The NiCd

Re: [M100] New User - Resurrected T102

Keep in mind that supercaps have a high self-discharge rate. From the measurements I did when I put a 2.5F cap in my M100 I’m guessing it would back up the full complement of RAM for about 2 days. The original NiCad would last about a week will 4 option RAMs. That being said I don’t see a huge

Re: [M100] New User - Resurrected T102

Welcome to the club! Congratulations and Thanks on/for restoring a M102. I have a 102 as my "daily driver" and hope to also repair a couple of problematic 100s in the near future. Thanks, also, for the part numbers. I'm debating cap-vs-nimh for my restores. My recent experience with a capped 100

[M100] New User - Resurrected T102

Hello All, I was born in 1975, and throughout the 80s I looked forward to the annual Radio Shack catalogs, each year drooling over the T100/2s etc! Well a couple weeks ago I was cruising eBay and ran across a busted T102 and snatched it up cheap. Completed the following to fix it up: -