RCA COSMAC Operator's Manual page 16

INTRODUCTION TO UTILITY PACKAGE - UTZ (cont'd)
The third utility command is $P. For example
$P6C
starts execution at location 6C with RO as the program
counter* (after the user hits CR and the utility program
provides a LF). The last-four-digits-in rule (pplies to
the address typed in.
In summary, the user has the following options after the
prompt character,
*.
He may type
?M[address]6[count]~
!M[non-hex] [address]6[data] [optional ,or;]~
(where "data" may have imbedded non-hex digits between
each hex pair)
~
or
$P[address]CR
UTZ ignores initial characters until it detects ?,
!,
or
$.
Then, inputs which are not compatible with the above for-
mats will result in an error message.
*$P always begins with RO as program counter. This is
consistent with the fact that
p=o
after the
COS~~C
CPU
is RESET.
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