64 entries in 0.393s
: last i dun into subj in depth, formed impression that usg may have exterminated (and swallowed the bones of) all extant makers of antifuse
rom, in early '90s . on acct of the intrinsic radiation resistance of antifuse
: and i have nfi currently how to even approach the antifuse
'actel a1010a', antifuses aint even visible under electron micro. prolly will have to be inferred logically.
: and that actel, it's a 1200 gate antifuse
fpga (well, without the 'f', lol), turns out.
: if you don't like that, get an antifuse
rom chip for it.
: mircea_popescu: i'd even settle for something entirely like ice40 but with fuse/antifuse
: would also have some antifuse
rom on-board, with option to run entirely from same.
: mircea_popescu: i wasn't even thinking of asking for true antifuse
sd card , considering that antifuse
roms have been unavailable since early 1990s ( see prev thread re subj )
: asciilifeform, there's some argument (cheapness) for including one single antifuse
rather than making the whole thing out of them.
: (blocks really oughta live in antifuse
rom. we had a thread..)
: the one 'republican ic' i would immediately put into production if i had a fab, is the humble antifuse
: until silicon can be made piecewise, like a printer page, rather than photographically by the million copies, we are stuck with it. (and antifuse
costs 0 and eliminates problem, so i have nfi what mircea_popescu is smoking)
: wouldja stop clinking to the supid idea ? antifuse
: it would not be so hard to implement, just put antifuse
link in the relevant circuit
: (i would even use antifuse
roms but they are NOT SOLD)
: to warrant antifuse
: blocks really oughta live on storage that doesn't measurably wear. luckily this was invented in the '70s, and is called antifuse
: jurov: these likes are from my recent attempt to locate a modern supplier of antifuse
rom of reasonable density
: Logged on 30-07-2015 20:25:52; ascii_field: keep all blocks in antifuse
: likely, somewhere in there is an antifuse
that, e.g., switches the workfunction to use sha3, or the like.
: ^ possible alf's antifuse
: to complete this story, i will add a diode on each antifuse
and a collective rail to blow'em all
: use a bit once, then blow the antifuse
it lived in.
: pogo is useless without hard drive, either (and no, we don't have antifuse
: there's gigabyte antifuse
: because now i can't use 1MB antifuse
: asciilifeform: thinking about antifuse
, a 'jungle' version could be made: make a pcb with 4096 shorts, scrape the desired bitpattern by hand. could be made into a 'pluggable module' and hand-verified
: ideally one would store keys in off-net antifuse
: ascii_field: tactically speaking, supposing there just isn't time for antifuse
: now go buy a silicon fab so that antifuse
rom gets produced again.
: (mask rom for known blocks from the past, antifuse
for future ones)
: blockchain really belongs on combo of mask and antifuse
: (ideally, in one-time-burn antifuse
rom, but we don't have it in this box)
: ^ the 'won't boot anything not signed by key in antifuse
rom' thing - finally arrived.
: mircea_popescu: data sheet reveals that there is, in fact, 64 bits of antifuse
eprom in there. but it appears that 'pogo' was lazy, did not use these for anything.
: whenever someone says 'immutability', i wish i could replace his ram with antifuse
: mircea_popescu: just gotta bring back antifuse
. it doesnt really get much simpler than antifuse
: wonder if anyone else has toyed with the idea of hardware purpose-built to store blockchain. think ssd, but write-only (antifuse
: now go and try to buy a 1980s style antifuse
ROM that actually burns
: anyone else notice how you more or less can't buy antifuse
roms any more?
: coin should be electronic. with small camera, dead-reckoning navigation gyro... antifuse
ROM for log.
: at any rate you set the flag once in antifuse
& forget about it.
: B) Cardanos firmware. This is a socketed antifuse
(OTP) ROM which is unique to your unit and is engraved with the latters serial number. If desired, it can be read on a common instrument sold for this purpose and its contents checksummed or otherwise perused. The checksum of your firmware ROM is printed on the bottom of the chassis, under the units serial number. For your safety, this ROM is non-reprogrammable