Download MVME147BUG 147Bug Debugging Package User`s Manual Part 2 of 2

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System Mode Operation
The memory dumped is the Þrst block of memory past the
exception vectors in the address range $800 to $1FFF. The
memory is formatted into S-records as deÞned by Motorola.
The S-record is sent and an ACK character $06 is expected
after each record is sent. If any other byte is received, the
record is resent. The record is resent 10 times before the
command is aborted. The S2 record is used for the 24-bit
address of the data sent. When the end of the private
memory is reached, the S9 record is sent to terminate the
dumping of memory. The dumping command displays on
the console that S-records are being dumped and that
dumping is complete. After dumping memory is complete,
the code waits for another command. Refer to Appendix C
for details on S-records.
mess
Message command.
The command to send a message from the CSO center to the
console of the calling system is mess, 4 bytes, followed by a
string of data no more than 80 bytes in length terminated
with a carriage return. The ROM code moves the string to the
console followed by a CR/LF. This command can be used to
send canned messages to the operator, giving some
indication of activity while various processes are taking place
at CSO. For example, Please Stand By. Many of these
message commands may be sent while in the command
mode.
rcc
Request for concurrent console command.
The Òrequest for concurrent consoleÓ command is rcc, 3
bytes only, and prompts you for a response. If you enter y,
the single character ÒyÓ is sent to CSO followed by the
console menu as displayed on your console. If you enter n,
the single character ÒfÓ is sent to CSO and the call is
terminated.
In concurrent mode, all input from either port, console or
remote, is taken simultaneously. All output is sent to both
ports concurrently. Either the console or the remote console
may terminate the concurrent mode at any time by typing a
CTRL-A. The phone line is hung up by the MVME147 ROM
code and a message is displayed indicating the end of the
concurrent mode.
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