U UNIVAC 1218 - Bitsavers

2.5 DEBUGGING OPERATIONS
TRIM III provides two debugging operations for punching a paper tape output
of either the contents of registers AU, ALt and current B, or the contents of
specified sequential memory locationso TRIM III recognizes these operations
only if a DEBUG declarative operation is read prior to the first PROG header
operation. When recognized, these operations generate a set of three or five
instructions in the object program which, when run on the computer with the
DEBUGio c subroutine, produce the desired dump. 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 pathso The debugging operations take the following form.
L w N
L W N
[label] ---- DUMPM •
1) L - Label is optional.
2) W - DUMPR or DUMPM must always be presento
3) V o - Applicable to the DUMPM operation onlyo Specifies the total number
of memory loca tions to be dumped. The number may be expr.essed in
octal or in decimal followed by the letter Do
4) V I - Applicable to the DUMPM operation onlyo 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 of coding for DUMPR or DUwiPM operations are given below.
[label] --+ DUMPR --.
[label] --+ DUMPM • 12 • 10000 --+
[label] --+ DUMPM • 10D • 10000 --.
[label] --+ DUMPM • 10D • CAT+28D ---+
[ label] ----+ DUMPM • 12 • CAT-15 --+
[label] --+ DUMPM • 64D • CAT --.
*See paragraph 3 0 4 6).
III-C-24