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IBM System/7 Functional Characteristics - All about the IBM 1130 ...

IBM System/7 Functional Characteristics - All about the IBM 1130 ...

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IPL sequenceHost DC1 DC1 Enq DLE STX Data DLE ETX BCC EOTrAWIFirst wordin 0000tWAw r w<strong>System</strong>/7 ACKO ACK1Figure 8-1. Initial program load operationUpon receiving a COD control character followed by a valid BCC, <strong>the</strong> <strong>System</strong>/7processor branches to location 0000 and begins executing <strong>the</strong> bootstrap program thatprocesses <strong>the</strong> host IPL as a normal transparent message.Binary Synchronous Communications Adapter 8-13

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