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Register-Level Programming Chapter 4
Lab-NB User Manual 4-22 © National Instruments Corporation
Counter B1 Data Register
The Counter B1 Data Register is used for loading and reading back the contents of 8253(B)
counter 1.
Address: Base address + 4 8010 (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 B1 contents.