Specifications

EPC-21/22 Hardware Reference
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If errors occur during the power-on self-test, the BIOS will display the error on the
appropriate line of the screen display and attempt to continue. For instance, if a
failure is discovered in COM1, the BIOS will disable COM1, display the error on the
line "TESTING ONBOARD SERIAL PORT #1 ....." and then continue as if the error
did not occur. It is important to watch the POST display to verify that no errors
occur.
If error messages are displayed during or after the POST display, see chapter 5,
Troubleshooting & Error Messages on page 27.
BIOS Setup Screen
The EPC-21/22 BIOS contains a setup function to display and alter the system
configuration. This configuration information is maintained in the EPC's battery-
backed CMOS RAM and is used by the BIOS to initialize the EPC's hardware.
The setup function can be invoked any time after the POST completes and first clears
the screen. Simultaneously press the CTRL+ALT+ESC keys. This may be done
during system operation in most, but not all circumstances. Some programs that take
control of the keyboard at a low level, such as Microsoft Windows, cause this key
sequence to be interpreted differently, or not at all. It should always work, however,
when the DOS operating system prompt is shown on the screen.
The main setup screen resembles the following:
RadiSys EPC-22 CMOS Setup, BIOS V3.06
386SL, 4 MBytes memory, 387SX present
Date (mm/dd/yy) ............. 08/12/93
Time (hh:mm:ss) ............. 07:34:56
Configuration Errors ........ Halt on all errors
Diskette Drive A ............ 1.4M 3.5 inch
Diskette Drive B ............ None
Fixed Disk Drive C .... AT
Fixed Disk Drive D .... None
Com1: ........................ Enabled F2 = EXM Menu
Com2: ........................ Enabled F3 = Fixed Disk Menu
F10 = Save CMOS and EXM data
Cache ........................ Enabled ESC = Exit without saving
Quick Boot .................. Disabled ↑ ↓ ↵ move between items
← → select values
Available EXM Slots ......... 8 slots