Softload
Chapter 13
Softload
The optional softload feature lets you download new software into the TA through the local DTE port. The new software is stored in nonvolatile
The new software files are downloaded into the TA from the customer’s host computer using the
Note: If the softload feature is not present, the %P1, $Q, $Y=x, $Y2=x, and $T=x commands will return an ERROR message.
The softload feature does not interfere with normal TA operation, except for the swap command. While the softload is in progress the TA remains fully operational.
TA SOFTWARE ARCHITECTURE
The concepts of sets of software and how the TA’s Central
Processing Unit (CPU) use them are described below.
Software Sets
The TA has two sets of operational software: the active set and the alternate set. The TA operates from the active set and performs software downloads into the alternate set.
A swap command allows the user to swap software sets at any time. The active software becomes the alternate software, and vice versa. This swap also allows the unit to return to its previous version of software. The active software set selected is stored in a separate nonvolatile memory location and is retained even after powering down the unit.
Swaps to invalid software are prevented. If a
Software Format
Updated software for the TA is provided on a standard
UTA220/UTA220k |