I/o base addressing – Contemporary Control Systems PC10420 Adapters User Manual
Page 4
TD874100-0IH
4
I/O
Read
Write
Address
Register
Register
Base + 0
Status
Interrupt Mark
Base + 1
Diagnostic Status
Command
Base + 2
Address Pointer High
Address Pointer High
Base + 3
Address Pointer Low
Address Pointer Low
Base + 4
Data
Data
Base + 5
Reserved
Reserved
Base + 6
Configuration
Configuration
Base + 7
Test ID/..../Next ID
Test ID/..../Next ID
Base + 8
Node ID Switch
Reserved
Base + 9
Node ID Switch
Reserved
Base + A
Reserved
Reserved
Base + B
Reserved
Reserved
Base + C
Reserved
Reserved
Base + D
Reserved
Reserved
Base + E
Reserved
Reserved
Base + F
Reserved
Reserved
Table 1—Register Map
I/O Base Addressing
The I/O base address for the register map can be set with jumpers. The
PC10420 does not require any memory address space—simplifying
installation. Se
e Table 2 fo
r details.
A9
A8
A7
A6
A5
A4
I/O ADDRESS
n
n
n
n
n
100
n
n
n
n
110
n
n
n
n
120
n
n
n
130
n
n
n
n
140
n
n
n
150
n
n
n
160
n
n
170
n
n
n
n
180
n
n
n
190
n
n
n
1A0
n
n
1B0
n
n
n
1C0
n
n
1D0
n
n
1E0