Re: Neat A2 goodies

[supertimer@aol.com (Supertimer)]

mikeford@netwiz.net (Mike Ford) wrote:

>Both are Laser128 branded, one is the memory expansion card for a IIe/IIc,
>and the other is a RGB cable to allow use of a IBM monochrome monitor (9
>pin). The monitor cable I will figure out, but the memory expansion has no
>chips. What memory chip should I be looking for to put on it, and where
>does the card go (or is that obvious once I open up a IIc)?

That's not a memory expansion card for the IIe/IIc.  It is a 1MB memory
expansion card for the Laser 128 series.

It has several vertical banks of sockets, right, with the banks labelled
numerically.  There is a socket for a header on the bottom of the right
side, right?  That's where it interfaces with the Laser motherboard.

You populate the card with 41256 chips.  Eight chips per 256k bank.
1MB total.  In a Laser 128EX or EX/2 (which comes with the card
preinstalled), you would use 120ns or faster chips.  In a plain Laser
128, 150ns chips are ok.