Reference Manual

PMAC 2 Software Reference

182 PMAC On-Line Command Specification

With jumper E51 in non-default state (ON for PMAC-PC, -Lite, -VME, OFF for PMAC-

STD), this command does a reset and re-initialization of the PMAC. On PMACs without the

Option CPU section (not option 4A, 5A, or 5B), factory default I-variable values, conversion-

table settings, and DPRAM and VMEbus addresses stored in the firmware (EPROM) are

copied into active memory (RAM). (Values stored in EAROM are not lost; they are simply

not used.)

On PMACs with the Option CPU section (option 4A, 5A, or 5B), PMAC enters a special re-

initialization mode called “bootstrap mode” that permits the downloading of new firmware

(see PMAC PROM SOFTWARE UPDATE LISTING for details of this mode). In this

bootstrap mode, there are very few command options. To bypass the download operation in

this mode, send a <CONTROL-R> character to PMAC. This puts PMAC in the normal

operational mode with the existing firmware. Factory default values for I-variables,

conversion table settings, and bus addresses for DPRAM and VME are copied from the

firmware section of flash memory into active memory. The saved values of these values are

not used, but they are still kept in the user section of flash memory.

Because this command immediately causes PMAC to enter its power-up/rest cycle, there is

no acknowledging character (<ACK> or <LF>) returned to the host.

Example

I130=60000 ... ; Change #1 proportional gain

SAVE.................. ; SAVE I-variables to EAROM

I130=80000 ... ; Change gain again

$$$ .................... ; Reset card

I130.................. ; Request value of parameter

60000 ............... ; PMAC reports current value, which is SAVEd value

(Put E51 on)

$$$ .................... ; Reset card

I130.................. ; Request value of parameter

2000 ; PMAC reports current value, which is default