"Andy Ball" wrote to "Roy J. Tellason" (12 Nov 02  23:25:22)
 --- on the topic of "ram parts"

 AB> Here's my 'best guess' as to the nature of some of the chips that you
 AB> mentioned.  I've not looked any of this up with the manufacturers'
 AB> data sheets, so the following should be taken with a pinch of salt...
 AB> Your list...

 AB> 41000J7 (GSM)             1M x 1 bit 70nS DRAM?     (3)
 AB> 4217100-70 (NEC)
 AB> 424256-70 (NEC)           256K x 4 bit DRAM (70nS?) (1)
 AB> MM514400N-06              1M x 4 bit 60nS DRAM ?
 AB> EC5004042E-60
 AB> GM71C4400AJ70 (Goldstar)  1M x 4 bit DRAM (70nS?)   (1)
 AB> GS81C4100370 (GSM)        4M x 4 bit DRAM 70nS?     (3)
 AB> HMS11000AS7 (Hitachi)     1M x 1 bit DRAM 70nS?     (3)
 AB> KM44C100J-6 (Samsung)
 AB> KM44C256AJ (Samsung)      256K x 4 bit DRAM         (1)
 AB> M511000A (OKI)            1M x 1 bit DRAM           (1)
 AB> M514256A-80J (OKI)        256K x 4 bit DRAM (80nS?) (1)
 AB> M5M4256AJ (Mitsubishi)    256K x 1 bit DRAM         (1)
 AB> M5M44256BJ (Mitsubishi)   256K x 4 bit DRAM         (1)
 AB> MM514400N-06              1M x 4 bit DRAM (60nS?)   (1)
 AB> MT4C4M481DJ
 AB> TC55V328SJ-15 (Toshiba)
 AB> TMS417400ADJ (TI)         4M x 4 bit DRAM FPM 2KHz  (1)
 AB> TMS41709ADJ
 AB> UM61M256k-15
 AB> UM61 3232AF-7
 AB> W24257AK-15

 AB> Additions from the SIMMs in front of me...

 AB> AAA4M204J-06A             1M x 4 bit DRAM 60nS?     (3)
 AB> 81C1000A-60               1M x 1 bit DRAM 60nS?     (3)
 AB> 424400-70                 1M x 4 bit DRAM (70nS?)   (1)
 AB> V53C404HK60               1M x 4 bit DRAM 60nS?     (3)

 AB> (1) http://www.electrospec-inc.com/cross_references/ic_crossref.asp
 AB> (3) Guess based on numbers

The TMS44400J -70 is a 1M x 4 and so is HMS44400J.
I think the one at the top marked 41000J is also 1M x 4 because there is
a 4Meg stick around here with numbers like that only with a prefix.

 Mike
 ****

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