Mike, XR4 did not have any "protect the user from switching an installed ROM" functionality. It just hard-switched. You can see that when you disassemble the utilities. I think it had a couple of flip flops on the flex-board that wrapped the RAM chip. But I can't say for sure. I don't have an XR4. I do have an XR1. aka EXTRAM. Steve
On Sun, Feb 26, 2023 at 12:22 PM Mike Stein <[email protected]> wrote: > Jeff, > > Is there a way to reserve a DaR or BP for whenever they become available > again? > > Also if/when I order one of each will the shipping be combined? > > TIA, > > m > > On Sun, Feb 26, 2023 at 8:32 AM <[email protected]> wrote: > >> I’ll be doing a video on it eventually. It is quite a complex little >> beasty, need to take some time and really learn how to use it. >> >> >> >> Jeff Birt >> >> >> >> *From:* M100 <[email protected]> *On Behalf Of *Daniel L >> *Sent:* Sunday, February 26, 2023 3:44 AM >> *To:* [email protected] >> *Subject:* Re: [M100] VIDEO - Dial-A-ROM for the Model T computers (and >> others) >> >> >> >> Good video Jeff. Anyone have a demo for that weather tracker? Looks DOPE >> >> On 2/25/23 07:31, [email protected] wrote: >> >> Morning all, >> >> I just made this video live this AM. The DARs for the Model T computers >> have sold out already but my friend is making more. >> >> In this video we take a look at the ‘Dial-A-ROM’ a spiffy new multi-ROM >> for vintage portable computers. It was designed by the same guy who did the >> Backpack drive. First, we’ll learn how to use the Dial-A-ROM with the ROM >> images that come preinstalled on it. Then we’ll see how to add our own ROM >> images if we so desire. >> >> >> >> *https://youtu.be/CejyLsI0HIw <https://youtu.be/CejyLsI0HIw>Jeff Birt >> (Hey Birt!)* >> >> >> >
