CP6100 I/O Process Programming Manual

Introduction
S5064-001
CPU 1
CP6100
I/O Proc
6101
6101
• • •
Protocol Protocol
6100 subsystem hardware consists of two 6101 controllers
and up to 15 line interface units running protocols.
Comm Line
Comm Line Comm Line
$comm
Protocol
Application
Process
Legend
The application process makes a file system request to $comm.
CP6100 accepts the request and sends it to the line.
Notice that CP6100 is a NonStop process pair.
A protocol task in the 6100 subsystem controls the line.
CPU 2
CP6100
I/O Proc
6100 Subsystem
1
2
3
1
2
3
Figure 1-1. The CP6100 Environment (Dual-Port Controllers)
October 1985
1-3