GEM80-400
2. Controller Architecture and Program Operation
Issue 3 04/99
ALSPA GEM80-400 SERIES CONTROLLERS TECHNICAL MANUAL
Page 2-27
To transfer the system into EPROM, halt the controller and set S0 to 2. This causes
the following sequence of events to occur:
•
Stop scanning I/O
•
Check EPROM areas:
-
Any Video processors halt and display the "EPROM FORMAT"
-
The word "PROG" is written to the front panel alphanumeric
display
-
The required EPROM storage areas are checked to ensure that
they
are present and programmable
If the check on the IMAGEM format area is unsuccessful the IMAGEM formats will
not be transferred to EPROM, however, the transfer of the rest of the system will still
be attempted.
If the check on the onboard or requested Off-line areas is unsuccessful, the
transfer operation is aborted:
•
error messages are sent to the System Log and programming tool, and the
corresponding error code is displayed
•
the "PROG FAILED" LED lights to indicate which sub-module caused the failure
•
the controller remains halted
•
S0 remains unchanged. The controller cannot be run until S0 is set to 0
•
Any IMAGEM Modules are restarted.
Program EPROM areas:
•
the on-board FLASH EPROM is programmed
•
the "PROG" LED on the front panels of the 8272 Memory Modules light, in turn, as
any Off-line blocks are programmed
•
if the IMAGEM video formats are to be transferred to EPROM, the "PROG" LED on
the front panels of the 8272 Memory Modules light, in turn, as the Video Formats
are programmed
If an any area of EPROM fails to program:
•
error messages are sent to the System Log and programming tool, and the
corresponding error code is displayed
•
the "PROG FAILED" LED lights to indicate which sub-module caused the failure
•
the controller remains halted
•
S0 remains unchanged. The controller cannot be run until S0 is set to 0
•
Any IMAGEM Modules are restarted.
Switch to EPROM:
•
the "EPROMS Successfully Programmed" message is sent to the System Log and
programming tool
•
the "PROG PASSED" LEDs light on any 8272 Memory Modules
•
the S0 table is set to 1
•
the controller remains halted
•
the word "Halt" is written to the alphanumeric display
•
any IMAGEM Modules restart.
