U UNIVAC 1218 - Bitsavers

2.5 DEBUGGING OPERATIONS
TRIM II provides two debugging operations for punching a paper tape output of
either the contents of registers AU, AL, and current B, or the contents of
specified sequential memory locations. These operations are recognized by
TRIM II only if a DEBUG declarative operation is present in the program prior
to the first PROG header operationo If this condition is satisfied, these
operations generate a set of three or five instructions in the object program
which, when run on the computer with the DEBUG* subroutine, produce the desired
punched output. Each set of instructions is assigned a sequential identifying
number which appears with each punched output, thereby enabling programmer
recognition of repeated times through given coding paths. The debugging operations
take the following form:
L
[label]
L
w
-+ DUMPR--+
w
1) L - Label is optional.
N
Vo N
-+ DUMPM • number of ]. [addreSs of first] -+
[ words to dump word to dump
2) W - DUMPR or DUMPM must always be present.
3) V O - Applicable to the DUMPM operation only. Specifies the total number
of memory locations to be dumped. The number may be expressed in
octal or in decimal followed by the letter Do
4) Vl- Applicable to the DUMPM operation only. Expresses the address of
the first word to be dumped. It may be expressed as an integer or
a tag plus or minus an integer.
Examples:
[ label] --+ DUMPR -+
[ label] -+ DUMPM • 12 • 10000--+
[ label] -+ DUMPM • 10D • 110000 --+
[label] -+ DUMPM • 10D • CAT+28D--+
[ label] -+ DUMPM • 12 • CAT-15-+
[ label] -+ DUMPM • 64D • CAT -+
*See Paragraph 3 0 2 8).
III-B-20