GE 68K System manual 68K Monitor Display

	68K System Monitor
GE Energy Services	User's Guide

68K Monitor Display

Output from the The 68K Monitor’s output is a stream of ASCII characters written back to the

68K Monitor ‘connected’ application / subsystem. The command executed determines the exact contents of the output.

When encountering a system exception error, or a defined breakpoint, exception and breakpoint handling routines will generate additional output.

Display Output While most output to the monitor port is a direct result of command input, some occurs asynchronously of the command input.

This requires the use of two methods of output display.

•The first method uses the monitor-input process, which formats the output into a common buffer and signals the output process that data is available.

−All output that occurs synchronously with the input uses this method, including command data and input line display.

•The second method uses exception-handling routines to display data that may or may not occur as the result of a monitor command, but cannot be expected to occur synchronously with the input.

−A pSOS exchange sends this data (including unassigned exception and breakpoint data displays) to the output process.

An Example: Once a breakpoint is set, the monitor cannot control when or if the system encounters the breakpoint.

The exception and breakpoint display output may occur at any time, and this output has priority over monitor input process output. This may cause occasional interruption of a command or input in progress, or the lack of a prompt re-appearing after displaying the data, but does not affect these functions in any way

SWM0023 1.00 2 General

1-6 Full Release