DEC MS630/M7609 Question

Paul Anderson useddec at
Wed Jul 10 23:13:10 CDT 2019

DEC used to use the first letter of the suffix for density, and the second
letter for the chip manufacturer.

On Wed, Jul 10, 2019 at 12:08 PM Glen Slick via cctalk <
cctalk at> wrote:

> > The simple answer is to install it in a uVAX2 system and see what it
> > says :-)
> Or look up the part number on one of the DRAM chips, count the number
> of DRAM chips, and then work out the total.
> If the M7609 uses 256Kbit DRAM chips (as all MS630 boards do), then 9
> of them are 256KB with parity, 36 of them are 1MB, and the total of
> 288 256Kbit DRAM chips on the M7609 is a total of 8MB.

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