Larry

Me too, and I suspect quite a few others here.

Outstanding!

What are your approximate main board dimensions? I used to have several of these, but got rid of them since they were so big (and I also traded for some other stuff). There is another thread here about a recreation of the ATR8000, although it did not include your enhancements. If you look at this thread, it is probably best to start on page 6.

It's a fact that compared to most later commercial assembler-editors, the Atari Editor Assembler was seriously slow. I never found that much of an obstacle since my assembly projects were always very small. But I always did wonder why it is so slow. Anybody have some insight into its lagging performance? Just a quick thought -- it would be so fitting to have the EA loaded and used with a cassette system! 😉

Was the 1450 designed to use ISA floppy drives or some specialized version? Presume this uses a 1200 keyboard?

Thanks for taking the plunge. Maybe we'll come up with a working, obtainable device. Has anyone used the SCSI2SD 3.5 version?

Is there one that works with the MIO and you can actually purchase? I did a fair amount of searching, and the RP2040 is all that I found. Edit: Actually, I found a Zuluscsi 1.2 from Rabbithole. Any info on it? https://www.ebay.com/itm/195536301143? And is anyone aware of any videos about the MIO? I haven't found any (yet) on YouTube.

This one/source? https://samplerzone.com/products/zuluscsi-mini-v1-0-scsi-sd-drive And then you use an adapter to connect to 50-pin SCSI? Thanks.

Hi- Sorry, but I have never done either of those things. Offhand I can't really see much advantage to adding an U1MB to an MIO in Altirra. It has 1 MB of added ram and the OS are so easy to change. But I'm pretty much a neophyte with Altirra. And I sure like not having to get out of my recliner to use my Atari. 🙂

I don't use Sparta. MyDos works great with the emulated MIO HD. Plenty fast. Boots to Dos in about 2-3 seconds. The MIO menu works great (I use 1.42). Fn + F3 + F5 invokes the menu. Don't forget to declare 1.42 as default if you have more than one rom version saved! That had me tearing my hair out! Yes, make a VHD.

I wondered how the heck one loses a keyboard!

After scrolling down at BEST for a half-hour 😜, I got to the price of $99.95 for a reconditioned keyboard. Good to have a reliable source, but the OP can probably do better here. I'm still in sticker-shock at the prices of retro stuff these days.

Thanks, I got it going as far as I want to go. I only wanted the HD. But for emulation, I found that I prefer the MIO version.

I'm game. Count me in for one.

You're going to have to tell me what BTT means? 🙄 And you're saying it will work with a proper E: or S: handler based on your 1090XL card, right?