Re: new ROMs and 3rd party upgrades

Article View: comp.sys.mac

Article #15865

#15865

From: Mike Ching
Date: Fri, 01 May 1987 20:36

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In article <127200005@inmet> callen@inmet.UUCP writes:
>
>NOW - What's the difference between the DDJ upgrade and a REAL 512K
>Macintosh?

The only difference I've seen is that the REAL Mac has pullup
resistors on address lines A17 and A18 and they're needed for
reliable operation.

mike ching

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Message-ID: <3946@amd.UUCP>

Path: arc1-ca.pugleaf.net!utzoo!mnetor!seismo!rutgers!mit-eddie!uw-beaver!tektronix!cae780!amdcad!amd!ching

References: <127200004@inmet> <127200005@inmet>

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Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Path: arc1-ca.pugleaf.net!utzoo!mnetor!seismo!rutgers!mit-eddie!uw-beaver!tektronix!cae780!amdcad!amd!ching
From: ching@amd.UUCP (Mike Ching)
Newsgroups: comp.sys.mac
Subject: Re: new ROMs and 3rd party upgrades
Message-ID: <3946@amd.UUCP>
Date: Fri, 1-May-87 16:36:14 EDT
Article-I.D.: amd.3946
Posted: Fri May  1 16:36:14 1987
Date-Received: Sun, 3-May-87 04:52:07 EDT
References: <127200004@inmet> <127200005@inmet>
Reply-To: ching@amd.UUCP (Mike Ching)
Organization: Advanced Micro Devices
Lines: 10

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