as a PC/104), remove this jumper.
User jumper
The user jumper is W12[7–8]. The INT17 functions provide an easy
method to implement software routines according to whether or not a
jumper has been installed. Refer to the INT17 calls to read user jumper
on page 112.
BIOS recovery jumper
The BIOS recovery jumper on the PC–600 is W12[9–10]. This jumper
allows you to reinstall the BIOS from a floppy disk using a serial link
from COM1 of the PC–600 to COM1 of a host computer. When the BIOS
recovery jumper is removed, the system will use the boot block recovery
process to program a new BIOS.
The BIOS recovery process uses the
embflash.exe
utility. This utility
can be obtained from Octagon Systems Technical Support. To use the
BIOS recovery jumper the following steps must be taken:
1.
Copy the
EMBFLASH.EXE, PLATFORM.BIN
, and
BIOS.ROM
files to the
root directory of a DOS floppy disk.
2.
Remove power from the PC–600.
3.
Remove the W12[9-10] BIOS jumper.
4.
Using a VTC-20F or VTC-20M cable and a null modem adapter, connect
COM1 on the PC–600 to COM1 on the host computer. It does not matter
what OS is on the HOST computer as long as a DOS session can be
started.
5.
Start a DOS session on the host computer. Put the floppy disk with the
embflash.exe and support files in drive A of the host computer and change
to the A: drive.
6.
Power up the PC–600. If you have a post card, you can place it on the
PC–600 PC-104 or PC-104 plus bus and the system will boot to a post A1,
or you can allow about 5 seconds for the system to boot to the boot block
recovery state.
7.
On the host computer type:
embflash <enter>
The host computer will display a status screen that shows the progress of
the BIOS programming.
8: When the status screen indicates the process is complete, power down the
PC–600 and replace the W12[9-10] jumper.
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