Memory Upgrade for 164SX

[Rajiv Prasad]

Hi folks:

I'm looking to upgrade memory on my 164SX.  I know I must use matching 
DIMMs in its two banks.  Questions:

1. What is the single largest module capcity 164SX can handle (256 MB, 
or 512 MB)?  If it can take 512 MB DIMMs, I could get a couple to bump 
up the memory past 1GB.  The other bank has 2 128MB DIMMs.  Would the 
164SX recognize that much?

2. Can my 164SX use registered ECC DIMMs?  I'm found these DIMMs on ebay 
(item #3842099226).

Thanks in advance.

Rajiv