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Has anyone got an AST MegaPlusII (or the switch settings)?

Lorne

Veteran Member
Joined
Jul 27, 2008
Messages
1,164
Location
Chandler, AZ, USA
I'm trying to find the DIP switch settings for an AST MegaPlusII card.
"The Ref" lists the card, but there are no switch settings identified.
I've searched a few other places and can't even find mention of this card.

Here's a photo of it:

AST MegaPlusII.JPG

In addition, it has a triangular AST card mounted on it which connects to the 62 pin connector:

AST MegaPlusII triangular card.JPG

This triangular card had a cable running from it, to the 15 pin connector at the top left of the AST ConnectALL. The ConnectALL is an interesting (in that I haven't a clue what it does) little add on. The two screw holes on the left side mount under the screws holding the right side of a 5150 PSU in place, and the cables poke through one of the holes on the back of the 5150.

AST ConnectAll.JPG

Edit: the larger connector on the ConnectALL comes from J2 (the parallel port) so that's going to be for a printer. What I don't know is what the triangular card, and the other connector is for. And what's with all the other slots for other connectors? Future expansion?
 
Last edited:
Lorne,
I have an I/O Plus II user manual. The triangular board may be the joystick interface. The Mega may have options for two serial ports also.
 
modem7:
I think you should change your username to "master of documentation".
Thank you once again.

Chuck(G):
There are three banks of OKI M3764-20RS chips, and one bank of Mostek MK4564N-20.
Now you can see if your hunch was correct, by referencing modem7's document.

(Should they have been mixing up chip types like that?)

Thanks guys.
 
There are three banks of OKI M3764-20RS chips, and one bank of Mostek MK4564N-20.
Now you can see if your hunch was correct, by referencing modem7's document.
(Should they have been mixing up chip types like that?)
.

Yup, exactly what I thought it would be--a starting address. It doesn't really matter about the chips--it's best to have the same type in the same bank, but even that's not a hard-and-fast rule.
 
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