[comp.sys.misc] Memory, 32-bit vs 16-bit

asplund@alcor.usc.edu (Daryl) (02/07/90)

Hello all,

I have a Compaq '386/16 and have some questions regarding the 
design and architecture of the 32-bit memory and how it interacts 
with 16-bit memory.

My questions arise because I have completely filled the 32-bit 
2 Megabyte memory board.  It seems as though my options are 
limited in respect on how to add more memory to my system.  Now 
the questions:

1.  I was told that if I added a 16-bit memory expansion card 
(using a slot) that the memory would not be linked contiguously 
with the current 2Mb that is on the 32-bit board; thus not 
allowing me to use one memory manager/driver to access all the 
extended/expanded memory.  The reason given for this is that 32-bit
memory works completely differently that 16-bit, therefore it 
would not all be seen as one "chunk" of memory.  IS THIS CORRECT? 


2.  As the Compaq 32-bit expansion card (connects to the current 
32-bit card) is about $700.00, does anyone know of any other 
makers of expansion cards that connect DIRECTLY to the Compaq 
supplied 32-bit memory card?

I have heard that Kingston (a company in California) makes such a 
product.  Has anyone had experience with this company / product?  
Is it reliable?


3.  If I could get a 16-bit card to work (i.e. all memory 
accessible contiguousness), would I have to use static column ram 
as is on the 32-bit card?  Or would I be safe using DRAM, since 
the access speed is 16-bit as opposed to 32-bit?


Thanks in advance for the time and effort to answer my questions.  
Responses to any, all (or combination there of), are welcomed and 
appreciated.  

Please send ALL responses directly to me at:  asplund@alcor.usc.edu