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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.
Cache Write-Through under CPU Control
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
2
1
Hardware Preparation and Installation
J3
2
Cache Write-Through Always
(factory configuration)
1
1-7
1
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