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Functional Description
MC68060 MPU
4
Flash Memory and EPROM
Flash Memory
4-4
The MC68060 microprocessor is the main processor for the
MVME177. The superscalar MC68060 processor has:
Two MC68040-compatible CPU integer cores
MC68040-compatible floating point core
Independent 8KB instruction and operand data caches
MC68040-compatible paged memory management unit
A bus controller
The processor is in a PGA socket. Its clock speed is 50 MHz (for the
-00x models), and 60 MHz (for the -01x models). Note that the local
processor bus runs at only half the processor speed. Refer to the
MC68060 user's manual for more information.
The MVME177 includes four 28F008SA Flash memory devices. The
Flash devices provide 4MB of ROM at address $FF800000-
$FFBFFFFF. The Flash is organized as one 32-bit bank for 32-bit
code execution from the processor. The Flash could, for instance, be
used for the onboard debugger firmware (177Bug) which would be
downloaded from I/O resources such as:
Ethernet
SCSI
A serial port, or
The VMEbus
When Flash is used with EPROM, either the top or bottom 2MB of
Flash is available in the second 2MB of memory space after the
EPROM. Refer to Table 4-1 below.
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