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SCIENTIFIC DATA .sYSTEMS
IDE NTIFICA TIO N:
PURPOSE:
ACTION:
CALLING
SEQUENCE:
PROGRAMMING
CONVENTIONS:
MEMORY
REQUIREMENTS:
SUBROUTINES
USED:
SDS PROGRAM LIBRARY
PROGRAM DESCRIPTION
042006 (900 Serie
Catalog Nos.
642020 (9300)
MONARCH CONTROL MESSAGE INPUT SUBROUTINE (QMSGRD)
To obtain a record from the control message input medium (cards, mag-
netic tape, paper tape or typewriter).
The medium is specified by the
MO NARCH Unit Assignment Table entry for control messages (QMSG).
If
the record length exceeds 72 characters (18 words), only the fi rst 72
characters are stored in the control message input area ($MSG).
If
the
record length is less than 73 characters, the entire record is stored in
the control message input area.
The control message input area is lo-
cated in the MONARCH Control Routine.
a.
If
the medium is paper tape or typewriter, the record is read di-
rectly into the control message area by executing the subroutine
whose program ID is MTYIO.
b.
If
the medium is cards or magnetic tape, the record is read into a
40-word input area (CW) in QMSGRD.
Cards are read using the
subroutine whose program ID is CARD.
The record is read in the
binary mode.
The binary card image thus obtained is converted
from Hollerith code (12-bit code) to SDS internal code (6-bit code)
and the first 72 characters of this converted record are moved to
the control message input area (MSG).
Note that the maximum
magnetic tape record length that can be accommodated is 160
characters (40 \vords).
BRM QMSGRD
Relocatable subroutine with no transfer address in End Record. No regi-
sters are preserved.
No PROGRAMMED OPERATORS are used. Com-
munication with input/output subroutines is via the MONARCH Unit
Assignment Table.
Approximately 310 8 or 200 10 locations.
MTYIO, CARD, MAGTP, HOLBCD
17
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