National Instruments PC-DIO-96 Manual Do Utilizador
Register-Level Programming
Chapter 4
PC-DIO-96 User Manual
4-2
© National Instruments Corporation
Register Map
The following table lists the address map for the PC-DIO-96.
Table 4-1. PC-DIO-96 Address Map
Register Name
Offset Address
Size
Type
(Hex)
82C55A Register Group
PPI A
PORTA Register
00
8-bit
Read-and-write
PORTB Register
01
8-bit
Read-and-write
PORTC Register
02
8-bit
Read-and-write
CNFG Register
03
8-bit
Write-only
PPI B
PORTA Register
04
8-bit
Read-and-write
PORTB Register
05
8-bit
Read-and-write
PORTC Register
06
8-bit
Read-and-write
CNFG Register
07
8-bit
Write-only
PPI C
PORTA Register
08
8-bit
Read-and-write
PORTB Register
09
8-bit
Read-and-write
PORTC Register
0A
8-bit
Read-and-write
CNFG Register
0B
8-bit
Write-only
PPI D
PORTA Register
0C
8-bit
Read-and-write
PORTB Register
0D
8-bit
Read-and-write
PORTC Register
0E
8-bit
Read-and-write
CNFG Register
0F
8-bit
Write-only
8253 Register Group
PORTA Register
10
8-bit
Read-and-write
PORTB Register
11
8-bit
Read-and-write
PORTC Register
12
8-bit
Read-and-write
CNFG Register
13
8-bit
Write-only
Interrupt Control
Register Group
Register Group
Register 1
14
8-bit
Write-only
Register 2
15
8-bit
Write-only