Normal Sequences

Instead of using CCWs designed for BSC line transmissions, the channel-to-channel adapter sequences are as those shown in Table 1.

Table 1. CTC Adapter Program
Opcode	Definition	Comments
X'14'	Sense	This CCW will cause other end of adapter control to fall through to the read CCW.
X'01'	Write	Writes data to the adapter.
X'07'	Control	Causes the channel program to wait until the other end of the adapter issues a SENSE. A block multiplex channel is freed for other programs.
X'02'	Read	Reads data from the adapter.

Figure 1. CTC Adapter Normal Sequences hasa6036