Ram Upgrade


cobbleware doesn't say whether it's the right chip or not, it gives a load of technical info about the chipbut i dont know whether it's the right one or not. the detail given about it on the site where the bloke who i'm getting it off got it:
ram chip
 
The chip that is used on Cobbleware.com is a VDATA 16MX16-SDRAM CHIP

The micron chip is compatible ... because it is also 16MX16-SDRAM However, the Micron chip is faster becasue it is CAS LATENCY 2 ... and the VDATA Chip is CAS LATENCY 3

The Micron Number you need is: MT48LC16M16A2TG-75 this is the CAS LATENCY 3 part number.

Hope this helps.

(FYI - I have worked in the memory business for the last 8 years)
 
The data sheet says it can run at CL3 or CL2. At CL2 it can run up to 133MHz and CL3 up to143MHz. Will this not work on GP32 then?

I haven't looked at RAM much since I did some simple static RAM to VME bus thing at Uni! Not entirely relevant!

Mark
 
Darkfader's site has a list of common manfacturer's and model numbers for memory that is suitable to do the upgrade:

http://darkfader.net/gp32/morehw.html

Your Micron RAM is listed for doing a 32mb upgrade, so should be suitable. Might be worth looking at the datasheet for the Micron RAM and cross-referencing it with the info on cobbleware.com. I'm not sure if things like the memory's number of refresh cycle's, etc, make a difference if they are not the same.


I've also just noticed that on Mr Spiv's site, there is an update on his progress on changing MMU functions to support 32mb/64mb RAM, as well as some updated chatboard example code (kbdtest_fifo_04)
 
Seraptin posted on May 20 2004 at 04:56 PM said:
where can i find such ram-modules ?

best would be a german shop :unsure:
You can buy them from Farnell. See the link above. They have a German site iirc. Go to www.farnell.com and click on the German flag.

(edit: Can't see them on the German site -> sorry -> they can probably order them if not though)
 
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