Re: Run from a ROM Chip
Along the same line, I'm still looking for a USB-connected mass storage device based off of an EPROM. "Are you insane?" Maybe but hear me out.
I want a portable near-universal bootable device which is _inconvenient_ to change or erase, and which would require breaking a tamper-evident seal to do so. Something I could travel with and know that even if it's out of my sight for short periods, the intact seal is a good sign that it's contents have not changed. If border security wants to read it, go ahead. Make copies for all I care. But when I get to my destination I can use it to boot a system to a software environment I trust, and from there I can import other (more mundane) storage.
The closest I've found are a line of flash drives from Kanguru (https://www.kanguru.com/) that have a physical write-protect switch. The one I bought for my initial playing around isn't going to win any speed awards but that's fine. I figure I could file off the tip of the switch plastic and use a clear heat-shrink sleeve as the tamper-evident seal over it.
The prominence of EEPROM and the explosive mis-use of the term 'ROM' in the last 20 years has not made my searches very productive... but I suspect there wasn't any great interest in UV-erasable storage with 2-4GB per chip.