MicrocomputerSolutions
Veteran Member
- Joined
- Jul 30, 2012
- Messages
- 563
I've been using a SD Systems Expandoram II since they came out in around 1980.
I've always used it as a 64K board utilizing 4116 dynamic rams. Recently I was looking at the technical manual available on S100 Computers and noticed that it talks about using 4164 ram chips to get 256K on the Expandoram II. There is a detailed list of modifications, and I'm playing with the idea of trying it, since I already have the 4164 chips, and would like to try running SDOS/CPM 3.0 in Banked Memory Mode with the SBC-200.
So, I'm looking for people who have a Expandoram II and are using 4164 memory chips to verify that this works, before cutting up my perfectly good Expandoram II.
I've always used it as a 64K board utilizing 4116 dynamic rams. Recently I was looking at the technical manual available on S100 Computers and noticed that it talks about using 4164 ram chips to get 256K on the Expandoram II. There is a detailed list of modifications, and I'm playing with the idea of trying it, since I already have the 4164 chips, and would like to try running SDOS/CPM 3.0 in Banked Memory Mode with the SBC-200.
So, I'm looking for people who have a Expandoram II and are using 4164 memory chips to verify that this works, before cutting up my perfectly good Expandoram II.