MEM11 Status Update
jnc at mercury.lcs.mit.edu
Tue Jan 20 10:02:44 CST 2015
> From: Guy Sotomayor
> I'm using FRAM. They have unlimited write cycles
Although I hear the latest flash have very, very large numbers of write
cycles. But if you can get large enough FRAMs, yeah, they seem like a better
> I didn't want to have any sort of removable media as that bring its own
> sets of challenges.
Oh well, back to loading all the bits in over a serial line (although I
suppose if one has some other removable media drive, e.g. a RX02, one could
get the bits in that way).
>> (Or perhaps even a front-end running on a PC which is connected to
>> the MEM11 over the serial line.)
> That was my original thought (command front end) but that would mean
> writing/supporting a bunch of different programs for different
Well, probably only at most two (Windoze and Linux), and maybe only one (since
there are Windows emulation packages for Linux). Although if one stuck to a
line-oriented interface, something like CygWin would allow one to have only
> and I want the MEM11 to pretty much stand on its own
Oh, I agree that that's a worthy goal - the front-end would only be to make it
'user-friendly', instead of cryptic and terse.
> the realistic limit will be on the Unibus interface ICs. I have (at
> last inventory) enough for ~25 boards. After that I'll have to see if I
> can either source additional parts or re-design that part of the board
> to use something else.
Yes, that _is_ a problem...
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