On Mon, 22 Feb 1999, Roger Merchberger <zmerch_at_30below.com> wrote:
> >> BIOTECH ELECTRONICS BCT800 graphics board - uses AMI 68047 chip and 12
>
> Erm, sounds like that AMI chip is a clone of Motorola's 6847 VDG, which
> was
> used in Tandy's CoCo 1 & 2, and the MC-10.
>
> I wonder:
>
> 1) if they're pin compatible,
> 2) if they've got added functionality -- might be fun to play with in one
> of my CoCo's if there is!
>
It's quite likely that AMI's 68047 is a clone of Motorola's 6847, because
AMI used to supply pin-for-pin equivalents of a number of Motorola
6800-family devices, including the 6821 Peripheral Interface Adapter and the
6850 Asynchronous Communications Interface Adapter. The 68047 and 6847 are
both 40-pin chips, but I don't have an AMI datasheet handy.
Arlen
--
Arlen Michaels amichael_at_nortelnetworks.com
Received on Wed Feb 24 1999 - 13:02:09 GMT