Tektronix K1297-G20 - Manual (Page 154)

Appendix A: Interfaces
A-54 K1297-G20 Monitor User Manual
The two switches on the front panel have the following function:
ABT Abort (for future use, not yet software supported)
RST Reset all onboard devices
The four status LEDs on the front panel have the following meaning:
BFL Board failure
CPU CPU is accessing the bus
PMC Top PCI mezzanine card, if installed, is active
PMC Bottom PCI mezzanine card, if installed, is active