| 摘要 |
PURPOSE:To set two kinds of logical address for a 4-channel processor, by giving the channel controller two logical addresses for a noncross call and a cross call mode, and by switching them automatically. CONSTITUTION:When the OS of a system O is operated by a system 1, logical addresses 2 and 3 of a channel processor CHP at a noncross call mode and logical addresses 0 and 1 at a cross call mode are prepared. When the CHP logical addresses 2 and 3 are set in a floating channel address register FCA, the addresses 2 and 3 are given to channel processors 3-2 and 3-3, and when the CHP logical addresses 0 and 1 are set in the FCA, the channel processors 3-2 and 3-3 are given the addresses 0 and 1. Thus, the OS of one system is operated by the other system. |
