[net.micro.amiga] DMA into expansion box memory

walton%DEImos.Caltech.Edu@Hamlet.Caltech.Edu@caip.RUTGERS.EDU (03/07/86)

From: walton%DEImos.Caltech.Edu@Hamlet.Caltech.Edu


My understanding from a local hardware developer is that the hardware
developers' package from Commodore includes complete blueprints for a
5-slot Amiga expansion box, including PAL programming needs.  This box
turns the n (86?) lines on the internal Amiga bus into 100 pins which are
used for such things as DMA access control to the external memory
(detecting whether two processes are trying to get at fast memory).  This
source tells me, incidentally, that the MicroForge expansion box does not
have these extra pins, and so may not have this capability.  On the other
hand, my local Amiga dealer says that the MicroForge box has C/A's
official seal of approval, and they've told all their dealers to stock
these products.  Anyone else know anything about all of this.

Steve Walton
Caltech Solar Astronomy
walton%deimos@hamlet.caltech.edu
swalton@caltech.bitnet