Hercules-EBX CPU User Manual V1.02
Page 38
AD IN (+)
1
2
Ground
AD VIN
3
4
UNIADJ
+5V (ADC power)
5
6
-5V Reference
+15V (ADC Power)
7
8
+ Dref Voltage
-15V (ADC Power)
9
10
- Dref Voltage
Table 27: J33 – DAQ Test Point Pinout
5.5 CRISIS RECOVERY: System Recovery Contacts
Just below J18 is a small square labeled “Crisis Recovery” which encircles two metal pads on the
PCB. If these two pads are briefly shorted before and during power-up, the system will be forced
into a System Recovery mode. This mode forces the system to re-load the BIOS code from a
floppy disk and overwrite the current on-board BIOS (useful in cases where a BIOS update is
required or when BIOS corruption is suspected).
Failsafe mode operation is described on page 43.