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SECTION VIII.
OPERATOR'S CONSOLE
the console types out the contents of both registers and returns the carriage.
Thus, no change
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is ITlade in control or ITlain ITleITlory.
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Contents
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Contents of MLR
L (Logging) Key
If the TYPE indicator is extinguished and the carriage is returned, the console ITlay be
placed in the logging ITlode (see page 8-5, "Logging Mode") by striking the L key.
B (Bootstrap) Key
To perforITl a bootstrap operation:
1.
Strike the B key.
2.
Strike two octal keys to define the peripheral device.
3.
Strike five octal keys to define the starting address into which inforITlation is
to be transferred.
The graphics are printed in the following forITlat:
B 40 00000
When the second peripheral unit key is struck, the six bits defining the peripheral device are
inserted (with zero punctuation) into the ITleITlory local register.
When the fifth starting address
key is struck, the following operations occur:
1.
The specified starting address is inserted into the ITleITlory address register,
the sequence register, the A-address register, the B-address register, and
both the starting and current location counters of read/write channel one.
2.
A siITlulated PDT (read) instruction specifying read/write channel one (with
interlock) is generated.
The peripheral control is designated by the low-
order six bits of the ITleITlory local register.
If a tape control is designated
by the ITleITlory local register bits, the tape drive addressed as logical zero
is read.
3.
The console carriage is returned.
4.
The punctuation bits of each ITleITlory location loaded during the bootstrap
operation are autoITlatically cleared to zeros.
5.
A bootstrap operation is not terITlinated by a record ITlark in ITleITlory;
instead, the inforITlation flow is terITlinated by the appropriate peripheral
control.
8-11
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