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1990-01-25
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(c) Copyright 1989 Commodore-Amiga, Inc. All rights reserved.
The information contained herein is subject to change without notice, and
is provided "as is" without warranty of any kind, either express or implied.
The entire risk as to the use of this information is assumed by the user.
Amiga 2000 Motherboard Revision History Revision
Rev # Board Change
3.9 First 2 layer board, dealer demo only.
4.0 Last 4 layer board, has German part number.
4.1 Video fix, first 2 layer board released to consumers.
4.2 Fix for HITEK type keyboard, by removing two capacitors
(the first character typed on the HITEK keyboard was
lost).
4.3 New Gary (MOS) chip used, pull-up resistors added to
support it.
4.4 Production improvements (previous modifications now
included in layout), cost-reduction.
4.5 Pull-up on U605 (74ALS245) to support certain
accelerator cards with the Signetics buffer chip.
Kickstart 1.3 ROM used.
6.0 New layout for 1 meg RAM chips.
6.1 Fix to clean up RAM-retention by adding a reset IC
(RAM-retention occasionally caused a guru on powerup
though the system would start normally if the left
mousebutton was pressed). Agnus 8372 used.
6.2 Fix to get certain expansion boards to work correctly
with 256Kx4DRAMs and Agnus 8372.