User`s guide

90 DC 900-1516D
ICP2432 User’s Guide for OpenVMS Alpha (DLITE Interface)
6.2 OS/Impact and Downloaded Files
Software on the ICP2432 executes under control of Protogate’s OS/Impact operating
system. The OS/Impact system generation procedure typically creates several different
files, each of which must be downloaded to the ICP. A load address is specified for each
file; this defines the address at which each file is to be placed within the ICP’s memory.
In addition, an execution address is specified for the ICP. After all the component files
have been downloaded to the ICP, the ICP is informed of the execution address and it
transfers control to that location.
If you are using an integrated hardware/software product, the necessary files, load
addresses for each, and execution address are described in the product-specific docu-
mentation.
A download operation will only succeed if the ICP device is in the proper state to receive
it. This is normally ensured by first issuing a reset command to the ICP. If a debugging
console is connected to the ICP, there will be a brief delay before the ICP will accept the
download.
6.3 Get or Set the Timeout Value
The ICPLOAD program can be used to read the driver’s current I/O timeout value or to
set a new timeout value. When the timeout value is 0, there is no timeout. Protogate
highly recommends that you do not change the default timeout value unless you are
debugging protocol software using the SingleStep debugger.