Mac Plus with 256K ROMs?

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Article #15477

#15477

From: rs4u#
Date: Wed, 08 Apr 1987 12:14

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I was reading IM volume 4, and I came across the following paragraph:
 
        "The Macintosh Plus contains two 512K-bit (64Kx8) ROM chips,
providing 128K bytes of ROM. This is the largest size of ROM that can be
installed in a Macintosh 128K, 512K, or 512K enhanced. The Macintosh Plus
ROM sockets, however, can accept ROM chips of up 1M-bit (128K x 8)
in size. A configuration of two 1M-bit ROM chips would provide
256K bytes of ROM."

        Does this mean that it's possible to upgrade a Mac Plus with a pair
of ROMS from the Mac SE? Would a Plus so upgraded behave properly
(as far as compatibility with Plus and SE)?

	Are such upgrades available?

	Inquiring minds wnat to know...

		--Rich

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From: rs4u#@ANDREW.CMU.EDU.UUCP
Newsgroups: comp.sys.mac
Subject: Mac Plus with 256K ROMs?
Message-ID: <MS.V3.18.rs4u.80022404.brownsville.ibm032.385.4@andrew.cmu.edu>
Date: Wed, 8-Apr-87 07:14:01 EST
Article-I.D.: andrew.MS.V3.18.rs4u.80022404.brownsville.ibm032.385.4
Posted: Wed Apr  8 07:14:01 1987
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