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NEC Ram Module
I have as NEC memory module with the following markings on each of the two chips: 4218160-70 and 9451AU600.
the back of the board contins the following:P7460 and P10-14B74600.
Can anyone advise me as to the capacity of the module and whether it is parity or not.
the back of the board contins the following:P7460 and P10-14B74600.
Can anyone advise me as to the capacity of the module and whether it is parity or not.
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ASKER
Thanks for your help. This is information which NEC refused to answer.
ASKER
Thanks Frache.
Excuse my ignorance, but what is an Mo.
Excuse my ignorance, but what is an Mo.
1 Mo = 8 Mb
1 Mb = 1024 bits
-> 1 Mo = 8 * 1024 * 1024 bits.
-> 1 bit = 1 binary data ( 0 or 1).
ASKER
Thanks for the clarification.
Ok, have a nice day.
More details :
1 Mb = 1 000 000 bit
1 octet = 8 bits
16 * 1 M = 16 Mb = 16/8 Mo = 2 Mo
1 module = 32 * 1 Mb = 32 Mb = 32/8 Mo= 4 Mo.
Parity : you need one bit more per octet
-> 4 (8+1) * 1 Mb = 36 Mb ... you have only 32 Mb
ECC : you need two bits more per octet
-> 4 (8+2) * 1 Mb = 40 Mb ...