[c-nsp] AS5300 RAM

[Christophe Fillot]

Justin Shore a écrit :
> Does anyone know if there's a certain ROM version or jumper setting that
> required to support more than 32MB of RAM in an AS5300?  I've tried 
> upgrading one of our old 5300s to 128MBs twice now.  The first RAM 
> supplier was a questionable source.  The second vendor was a little more 
> well-known but also known for being questionable for over-clocking high 
> performance RAM to resell to gamers.  RAM for the EoLed 5300s is hard to 
> find at a reasonable price so you pretty much have to take what you can 
> find.  Both times the 5300 thought it only had 32MB of RAM in it.  I saw 
> a wire frame drawing on Cisco's site last week that pointed on the 
> location of 2 RAM slots on the main PCB.  It also showed 2 sets of 
> jumpers but it didn't talk about the jumpers at all (I mean literally 
> they said nothing about them even though the showed them on the drawing 
> and IIRC zoomed in on their positions).
>
> So, is there some trick to getting 128MB support in an AS5300?  I have 3
> other 5300s but I can't take them out of service and disassemble them to
> check their jumper positions or test the new 2x 64MB RAM sticks in one
> that already has 128MB running in it successfully.
>
>   
Indeed, there is a jumper (J3) configuration to modify:

http://www.cisco.com/en/US/products/hw/univgate/ps501/prod_configuration_guide09186a008007cad2.html

"*Note* If upgrading to 128 MB (MEM-128M-AS53=), move jumper J3 from 
position 2-3 to position 1-2. Figure 5 
<http://www.cisco.com/en/US/products/hw/univgate/ps501/prod_configuration_guide09186a008007cad2.html#11556> 
shows jumper J3 in default position 2-3."

HTH,

Christophe.