Table E–3: Bit Summary of PMCTR Register for Windows NT Alpha

Bits

Name

Meaning

 

 

 

63–48

CTR0

Counter 0 value

47–32

CTR1

Counter 1 value

31

PCSEL0

Counter 0 selection:

Value Meaning

0Cycles

1Issues

30

29–16 CTR2 15–14 CTL0

Must be set to one1

Counter 2 value

Counter 0 control:

Value Meaning

0Counter disable, interrupt disable

1Counter enable, interrupt disable

2Counter enable, interrupt at count 65536

3Counter enable, interrupt at count 256

13–12 CTL1

Counter 1 control:

Value Meaning

0Counter disable, interrupt disable

1Counter enable, interrupt disable

2Counter enable, interrupt at count 65536

3Counter enable, interrupt at count 256

11–10 CTL2

Counter 2 control:

Value Meaning

0Counter disable, interrupt disable

1Counter enable, interrupt disable

2Counter enable, interrupt at count 16384

3Counter enable, interrupt at count 256

Waivers and Implementation-Dependent Functionality E–11

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Compaq ECQD2KCTE manual CTR0, CTR1, PCSEL0