🚀 go-pugleaf

In article <829945593snz@amdavies.demon.co.uk>, Martin Davies
<Martin@amdavies.demon.co.uk> writes
>I'm trying to confirm the characteristics of a SIMM which I've
>recently been given, and would like some help please.
>
>The SIMM's a 72-pin device and I believe it's 16M; it came out
>of a working 486/66 PC which contained two such devices and
>reported 32M, but it's unlike any other SIMM I've encountered
>before.  Its description is as follows:
>
>The main label identifies it as a "Toshiba THM364020SG-70" and
>it has a smaller label which indicates what I assume is the date
>and batch number "9319AAA".
>
>The SIMM has eight chips, Tosh type number TC5117400J-70, on one
>side and four chips, Tosh type number TC514100ASJ-70, on the
>other side.  I deduce that the four chips on the reverse side
>are for parity, but I've never seen it implemented in such a
>fashion before.  My assumption is therefore that it's a 36-bit
>device.  I would also assume that it's a 70nsec device - anyone
>contradict these?
>
Yes its 32 bit ie non parity, if it was 36 bit it would have a total of
12 chips 2 per side extra for parity checking
>From the date code on the SIMM and the age of the AST Bravo PC
>from which it was removed (legally, I hasten to add!) I would
>guess that it's not an EDO device - can anyone confirm this?
>
yep not EDO
>It's my intention shortly to buy a new 5x86-based motherboard to
>upgrade from my current 386DX40 which can't take 72-pin SIMMs,
>so I'd like to be confident that the SIMM will work in a
>standard m/board.  Can anyone foresee any problems?
>
If you are upgrading to a Pentium you would have to fit another 16MB
simm as they have to be fitted in matched sized pairs.
>PS - what's the fastest m/board in which 70nsec memory will work
>correctly?
Pentium or Cyrix
>
>TIA,

-- 
George
Upgrade solutions             Telephone 0161 442 4813 or 0589 824608
Stockport                     Email george@ggedge.demon.co.uk
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