Yes there was the Crytronics/PCSG ROM Module (attached photo). It can hold up 
to six (6) Option ROMs and it has a rechargeable battery pack. It attaches into 
the M100 leg holes and plugs into the Option ROM socket. The batterles plug 
into the power socket and the wall wort plugs into the ROM Module.

Switching between ROMs was/is done through a rotary switch on the right. Best 
if switched with the unit off. The active Option ROM in the M100 Menu only 
shows the last active ROM. So, you must enter and exit the available option 
before it changes. Say you're in the Super ROM using Lucid and want to send the 
spreadsheet over to your desktop PC. You'd save the file to RAM, exit Lucid and 
Super ROM to the M100 Menu, and shut off the M100. Then change the ROM Module 
rotary to Disk+ and turn on the M100. At the M100 Menu select SUPER (last 
active ROM) to enter Disk+. There you can send files to a desktop running Disk+ 
Desktop (PC, I/III/IV, CoCo). When you finish sending and exit Disk+ the M100 
Menu will have DISK+ and not SUPER. Will need to do the whole switching bit to 
change back to SUPER.

At the time, it didn't seem like much to do. to be sure it was less trouble 
than writing this reply, with picture, on my iPhone with a Palm Graffiti 
wannabe. 



Greg’s <><
Sent from my iPhone

> On Jul 8, 2024, at 11:43, B 9 <[email protected]> wrote:.
> 
> What! That's extraordinary. I had presumed "floppy ROM" was just an old 
> Altair term for a ROM one could use to replace a floppy drive (a ROM 
> cartridge). How well did "Floppy ROMs" work? Did they run at 16⅔ RPM, like 
> Voyager's Golden Disk to maximize length? I wonder how common it was to press 
> records (vinyl or otherwise) with executable code.
> 
> —b9
> 
> P.S. Wasn't there an expansion for the Tandy 200 that added a ROM cartridge 
> port (as well as allowing switching between ROMs)?
> 

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