Motorola MVME1X7P User Manual

Page 71

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structure for that set. For example, for a 64MB, 33MHz
MVME167P board at revision C, the PWA field contains:

01-W3620F35C

(The 13 characters are followed by three blanks.)

5. Four bytes contain the speed of the board in MHz. The first two

bytes are the whole number of MHz and the second two bytes are
fractions of MHz. For example, for a 25.00 MHz board, this field
contains:

2500

6. Six bytes are reserved for the Ethernet address. The address is stored

in hexadecimal format. (Refer to the detailed description earlier in
this chapter.)

7. These two bytes are reserved.

8. Two bytes are reserved for the local SCSI ID. The SCSI ID is stored

in ASCII format.

9. Eight bytes are reserved for the systems serial ID, for boards used in

a system.

10. Eight bytes are reserved for the printed wiring board (PWB) number

assigned to the first mezzanine board in ASCII format. This does not
include the

01-W

prefix. For example, for a 16MB parity mezzanine

at revision E, the PWB field contains:

3690B03E

11. Eight bytes are reserved for the serial number assigned to the first

mezzanine board in ASCII format.

12. Eight bytes are reserved for the printed wiring board (PWB) number

assigned to the optional second mezzanine board in ASCII format.

13. Eight bytes are reserved for the serial number assigned to the

optional second mezzanine board in ASCII format.

14. Growth space (153 bytes) is reserved. This pads the structure to an

even 256 bytes. System-specific items, such as size of system side,
and systems side version, may go here.

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