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Board Description and Memory Maps

20.Eight bytes are reserved for the serial number, in ASCII, assigned to the optional third IndustryPack c.

21.Eight bytes are reserved for the printed wiring board (PWB) number assigned to the optional third IndustryPack c.

22.Eight bytes are reserved for the board identifier, in ASCII, assigned to the optional fourth IndustryPack d.

23.Eight bytes are reserved for the serial number, in ASCII, assigned to the optional fourth IndustryPack d.

24.Eight bytes are reserved for the printed wiring board (PWB) number assigned to the optional fourth IndustryPack d.

25.Growth space (65 bytes) is reserved. This pads the structure to an even 256 bytes.

26.The final one byte of the area is reserved for a checksum (as defined in the Debugging Package for Motorola 68K CISC CPUs User’s Manual) for security and data integrity of the configuration area of the NVRAM. This data is stored in hexadecimal format.

Interrupt Acknowledge Map

The local bus distinguishes interrupt acknowledge cycles from other cycles by placing the binary value %11 on TT1-TT0. It also specifies the level that is being acknowledged using TM2-TM0. The interrupt handler selects which device within that level is being acknowledged.

VMEbus Memory Map

This section describes the mapping of local resources as viewed by VMEbus masters. Default addresses for the slave, master, and GCSR address decoders are provided by the ENV command.

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Motorola MVME172 manual VMEbus Memory Map, Interrupt Acknowledge Map