Re: OctoRAM Memory upgrade

[kentm@pro-applejacks.cts.com (Michael Kent)]

Thye Chean and any other OctoRAM owners out there,

I own an OctoRAM board, but since the SIMMs I got for it were bad, I've 
never actually used the card.  I have played with it for a while though.

1) Yes, you can upgrade to more than 4 MB.  The OctoRAM will hold up to 8
   1 Meg SIMMs giving you 8 MB of RAM.

2 & 3) Yes, you must remove all of the 256K SIMMs to use 1 Meg SIMMs, you
       can't mix and match.  You can replace the 256K SIMMs with 2 1-Meg
       SIMMs to break even, or 4 1-Meg SIMMs to get 4 Meg, or 8 1-Meg
       SIMMs to get 8 Meg (neat how that works, huh?)  :)

4) I just moved back to St. Louis and can't find my manuals yet.  E-mail me
   in about a week, and I'll have them.

5) This may be related to your previous post about your DMA SCSI problems.
   There are some limitations on DMAing to the upper 4 banks of your Octo-
   RAM with either the DMA or RAMfast SCSI, but I don't remember the de-
   tails.  Sorry.  One of my projects this spring is to get my OctoRAM
   working and up to 8 Meg.  If you get it to work, please email me.

Hope this helps.

Mike
Michael Kent                             ProLine:  kentm@pro-applejacks
McDonnell Douglas                        Internet: kentm@pro-applejacks.cts.com
St. Louis, MO                            UUCP:     crash!pro-applejacks!kentm
All opinions herein are solely those of the author.          APPLE II FOREVER!!