Specifications

48 Software Interface
3.5 Basic ROM Commands
This section describes commands that the host can use to move data into
the module’s shared memory and check the module’s current status. This
section covers three basic commands: LOAD, JUMP, and STATUS.
3.5.1 LOAD
The LOAD command copies a block of data into the module’s main
memory. During initialization, the host uses this command to copy
the base microcode image into main memory. After the module is up and
running, the host uses the LOAD command to copy images of module
subsystems into main memory.
Figure 3-7 shows the structure of the LOAD command.
MA-0561-88
Figure 3–7 LOAD Command Format
MSGTAG
The message tag informs the driving software which messages belong
with which commands. DECvoice does not interpret the message tag. The
message tag is only significant to the driving software.
Slot
This field contains the slot code that identifies the module subsystem to
process the command. The slot code for the LOAD command is 0.