Path: utzoo!mnetor!uunet!cbmvax!fred
From: fred@cbmvax.UUCP (Fred Bowen)
Newsgroups: comp.sys.cbm
Subject: Re: Info needed on HD46506 chip ( 80 col PET video CRTC)
Message-ID: <3421@cbmvax.UUCP>
Date: 7 Mar 88 13:00:48 GMT
References: <7386@tut.cis.ohio-state.edu>
Organization: Commodore Technology, West Chester, PA
Lines: 17
Keywords: Video chip PET 8032 registers

erd@tut.cis.ohio-state.edu (Ethan R. Dicks) writes:
> I need an explanation of the CRT controller chip so I can implement my own
> $F000 rom to do what I need it to, and not start up PET BASIC.

The CRT controller used in the 8032 is a common 6545, whose two registers,
address and data, appear at $E880 and $E881 in the 8032 memory map.

It should be pretty easy to locate information for this device- one such
book is the CRT Controller Handbook by G.Kane, published by Osborn/McGraw
Hill (ISBN 0-931988-45-4).
--
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Fred Bowen			uucp:	{ihnp4|rutgers|caip}!cbmvax!fred
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Commodore Electronics, Ltd.,  1200 Wilson Drive,  West Chester,  PA,  19380