National Instruments Low-Cost Multifunction I/O Board for ISA Lab-PC+ - Manual (Page 142)

Register Map and Descriptions Appendix D
Lab-PC+ User Manual D-26 © National Instruments Corporation
Counter A2 Data Register
The Counter A2 Data Register is used for loading and reading back contents of
8253(A)Counter A2.
Address: Base address + 16 (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 A2 contents.