6100 MPS-B Programming Manual

INTRODUCTION TO 6100 MPS-B

Message Formats

ENVOY Format. The ENVOY format is used for Burroughs and ADM-2

protocols. It allows your application process to use a station

index rather than a station character address. The ENVOY format

can be used for the ADM-2 SEND function, and for Fast select,

Sequential select, and Broadcast select requests.

Basically, the WRITEREAD buffer Text field using ENVOY format

appears as follows:

Message Control Word

|<--- (two bytes) --->|

_______________________

|||

| MCW | ...

| ||_

|<--------------- sequence header ----------------->|

_________________________ _________________________

| | | | | |

... | [EOT] | function | . . . | station | 0 | ...

|<------------------ message ------------------->|

_______________________/ /________________________

| SOH | / / | |

... | or |<--------- text --------->| ETX |

| STX | / / ||

/ /

NOTE

The ADM-2 SEND function sequence-header may be terminated

with ENQ.

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