Motorola MVME2600 Series User Manual Page 489

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H
H-1
HNetwork Communication
Status Codes
There are two types of network communication status codes,
controller independent and controller (DEC21040 orDEC21140)
dependent.
The controller independent error codes are independent of the
specified network interface. These errors are normally some type of
operator error. The controller dependent error codes relate directly
to the specified network interface. These errors occur at the driver
level out to and including the network.
The status word returned by the network system call routine flags
an error condition if it is nonzero. The most significant byte of the
status word reflects controller independent errors, and they are
generated by the network trap routines. The least significant byte
reflects controller dependent errors, and they are generated by the
controller. The status word is shown below:
The error codes are returned by driver, and will be placed in the
controller dependent field of the command packet status word. All
error codes must be non-zero, an error code of $00 signifies no
error.
15 8 7 0
Controller-Independent Controller-Dependent
Table H-1. Controller-Independent Status Codes
Code Description
$01 Invalid controller logical unit number
$02 Invalid device logical unit number
$03 Invalid command identiÞer
$04 Clock (RTC) is not running
$05 TFTP retry count exceeded
$06 BOOTP retry count exceeded
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