User's Manual

Chapter 4 Register-Level Programming
© National Instruments Corporation 4-21 Lab-NB User Manual
Counter B0 Data Register
The Counter B0 Data Register is used for loading and reading back the contents of 8253(B)
counter 0.
Address: Base address + 4 8000 (hex)
Type: Read-and-write
Word Size: 8-bit
Bit Map:
76543210
D7 D6 D5 D4 D3 D2 D1 D0
Bit Name Description
7–0 D<7..0> Data Bit—8-bit counter B0 contents.