MEMORY ?????

[DIABLO_NEGRO]

what is the difference between

256k x 4
and
1meg x 1

how can you tell??

[Kronos]

One module 4 bit wide, meaning you could connect 4 of them to an 16bit bus
(like in the early Amigas) and get 512kbyte, or 8 to 1mbyte for 32bit systems.

The x1 modules would allway have to be grouped by 16 (32) and would form 2 (4) mbyte.

[DIABLO_NEGRO]

ok ... so how much ram is on each chip??

and if 256k x 4 = 512k on a 16bit bus what would it be on an 8bit bus??

[Kronos]

There are both 1mbit chips, which is the same as 128kbyte.

Only the organizations is different.

On a 8bit system you could add the x4 in pairs adding 256kbyte per pair and
the x1 in sets of 8 adding 1mbyte per set.

[DIABLO_NEGRO]

ok, so if I wanted 1 mb of ram on an 8bit bus with x4 id have 4 banks of 2 each = 1mb
x1 would be 1 bank with 8 chips =1mb

on a 16 bit bus I would double up the banks for double the ram per bank - correct??

 :-?

[Raziel]

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