Shared Buffer Status Byte - IBM 4684 Store Loop Adapter/A Manual

5.13 Shared Buffer Status Byte

This table describes the bits of the shared buffer status byte.
is updated by the store loop adapter microprocessor before it interrupts
the 4684 microprocessor.
+------------------------------------------------------------------------+
¦ Table 5-7. Shared Buffer Status Byte
+------------------------------------------------------------------------¦
¦ Bit ¦ Definition
+-------+----------------------------------------------------------------¦
¦ Bit 7 ¦ 1 = The diagnostic self-test is complete.
+-------+----------------------------------------------------------------¦
¦ Bit 6 ¦ 0 = All commands are complete.
¦ ¦ 1 = Busy
+-------+----------------------------------------------------------------¦
¦ Bit 5 ¦ 1 = Poll received.
+-------+----------------------------------------------------------------¦
¦ Bit 4 ¦ 1 = Loop message received.
+-------+----------------------------------------------------------------¦
¦ Bit 3 ¦ 1 = An error message is present.
+-------+----------------------------------------------------------------¦
¦ Bit 2 ¦ 1 = An internal 8051 storage dump is present.
+-------+----------------------------------------------------------------¦
¦ Bit 1 ¦ 1 = An EC level message is present.
+-------+----------------------------------------------------------------¦
¦ Bit 0 ¦ Reserved
+------------------------------------------------------------------------+
4684 Store Loop Adapter/A
Shared Buffer Status Byte
¦ Copyright IBM Corp. 1991
5.13 - 1
This byte
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