GE_OEC_9600_C-Arms

C-Arm Software 19
Hot-Byte Set (1)
With the Hot-Byte set at 1, the direction of data transfer will always be from the SRAM
card to EEPROM U58 as shown in both cases of Figure 2.
When the EEPROM is blank, this will be sensed by software during boot-up and the
information contained in the EEPROM.DAT file on the SRAM card is written to
EEPROM U58.
In the second case of Figure 2, the EEPROM is not blank but the Hot-Byte is set at 1. In
this case, the information in the EEPROM.DAT file on the SRAM card will overwrite the
information already on the EEPROM when the system is booted. After this takes place,
the Hot-Byte becomes a “0” and the software is back to normal operation as shown in
Figure 1.
This scenario would occur if EEPROM U58 was suspected of being corrupted and it was
desired to re-program U58. Before this could be done, the SRAM card would have to be
re-loaded with the files from the 3 1/2” floppy backup disk as explained under the Copy
Files from 3 1/2-inch Floppy Disk to SRAM heading in this section. The Hot-Byte on the
backup disk is set at 1 so that this re-write to the EEPROM can be accomplished.
Figure 2 - Data Transfer with Hot-Byte Set at 1