Counter b1 data register – National Instruments Low-Cost Multifunction I/O Board for ISA Lab-PC+ User Manual
Page 146
Register Map and Descriptions
Appendix D
Lab-PC+ User Manual
D-30
© 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 + 19 (hex)
Type:
Read-and-write
Word Size:
8-bit
Bit Map:
7
6
5
4
3
2
1
0
D7
D6
D5
D4
D3
D2
D1
D0
Bit
Name
Description
7-0
D<7..0>
8-bit Counter B1 contents.
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