TRACE - syntax of trace commands.

Description:

Trace commands may be grouped into two general categories according to type. Type 1 commands require a single letter function identifier, some of which must be accompanied with parameters. Type two commands require a word response. Although the full word may be specified if desired, only the first four characters are required.

In most cases, both types of commands require accompanying parameters, while with some, parameters are optional. Unless otherwise stated, the following rules apply to parameter specification:

All numeric parameters (addresses, repeat count, etc.) must be specified in OCTAL.
Parameters must be separated from one another by a single comma, or by one or more blanks. If the first parameter is numeric, however, it may immediately follow the command with no intervening delimeter.
Alphabetics may be specified in either upper or lower case.
All non-printing characters except, or course, the carriage return will be ignored.
If more parameters must be specified than will fit on a single line, the line can be terminated with a delimiter. This will cause a request for continuation input to be issued to the user. The termination delimited may be a comma, blank, colon or semi-colon - whichever is syntactically correct for the command.

In the individual command descriptions, certain conventions have been adopted for representing generic quantities (parameters) which must be supplied by the user, viz:

A1: an octal address, composed of octal numbers and symbolic addresses combined with '+' and '-' operators
An: the nth such address
D1: a first 1-12 digit octal data word specification. This too may involve symbolic address expressions.
Dn: the n-th such data word.
N: a 1-6 digit octal repeat count.

Note that if fewer than the prescribed number of digits are specified, leading zeros will be assumed; i.e., the quantity will be right-justified.

Multiple commands may be specified on the same line of input by separating the commands by a slash (/).