Motorola MVME2603-1121A, Installation And Use Manual

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Hardware Preparation and Installation
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The MVME2603/2604 is factory tested and shipped with the
configurations described in the following sections. The
MVME2603/2604Õs required and factory-installed debug monitor,
PPCBug, operates with those factory settings.
Cache Mode Control (J3)
256KB of L2 cache memory is available on the MVME2603/2604. L2
cache operation is transparent to users, but its write-through mode
is configurable via header J3 on older boards.
On newer
MVME2603/2604 boards, header J3 is not provided. With a jumper
installed on J3, cache write-through is under CPU control. With the
jumper removed, cache write-through occurs in all cases.
Flash Bank Selection (J10)
The MVME2603/2604 base board has provision for 1MB of 16-bit
Flash memory. The RAM200 memory mezzanine accommodates
4MB or 8MB of additional 64-bit Flash memory.
The Flash memory is organized in either one or two banks, each
bank either 16 or 64 bits wide. Both banks contain the onboard
debugger, PPCBug.
J3
Cache Write-Through under CPU Control
J3
(factory configuration)
Cache Write-Through Always
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