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| MVME177 Functional Description | |
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| Jumper or Control Bit | Control Condition | Memory ConÞguration | |
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| FLASHJP jumper J8 | Jumper in (= low) | 2MB EPROM (lower) and 2MB Flash | |
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| (upper) | |
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| Jumper out (= high) | All 4MB Flash | |
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| VMEchip2 bit GPIO2 | GPIO2 bit low (and | First 2MB Flash accessible (Note) | |
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| with J8 jumper in) |
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| GPIO2 bit high (and | Second 2MB Flash accessible (Note) | |
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| with J8 jumper in) |
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Note: These 2MB of Flash will be following the EPROMs in memory if the FLASHJP (J8) jumper is in, and could be read or write depending on the Flash write protect control.
Because only 1M x
The memory map for the Flash devices is controlled by the
VMEchip2 ASIC. The
❏8 bit
❏16 bit, and
❏32 bit access
Flash write protection is programmable through the VMEchip2 GPIO register. The address map location of Flash is at $000000 through $3FFFFF at local reset if the FLASHJP jumper (J8) is in, providing for the
Because the MVME177 uses 1M x
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