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I DEN TIFICATION:
PURPOSE:
ACTION:
i4
SCIENTIFIC DATA SYSTEMS
SDS PROGRAM LIBRARY
PROGRAM DESCRIPTION
042005 (900 Series)
Catalog Nos.
642019 (9300)
MONARCH MESSAGE ANALYSIS TABLES (TABLES - $CODES,'!
$PARAMS, $CHAR)
To provide the following tables for use by the MONARCH Control
Rout i nee
a.
Table of MONARCH Control message function codes ($CODES).
Each entry in this table contains (1) the function code mnemonic
for the control message, (2) the address of the processor (Action
Subroutine) for that control message, (3) the minimum and maxi-
mum number of parameters wh ich can be supp lied in the control
message, (4) the address of the memory area in which parameter
values are to be stored,
if
applicable.
For control message functions which require loading a system rou-
tine from the system tape, the initial load relocation bias and
parameters designati ng input/output functions are a Iso contai ned
in this table.
b.
Table of symbolic parameters ($PARAMS). Each entry inthe table
containsa 1-t04-character symbol and a 24-bit binary value for
that symbo I.
c.
Character classification table ($CHAR).
Each entry in this table
corresponds to one of the 64 possible internal character codes.
The position of the tabie entry for a given character, with re-
spect to the origin of the table, is determined by the internal
character code for that character.
Each table entry consists of
one word conta in i ng:
1.
A left delimiter classification code for the character.
This
code determines the role that the character plays when it oc-
curs as the leftmost character in a control message word. Oc-
cupies bit positions 12 through 17.
2.
An "internal" classification code for the character.
This
code determines the role that the character plays when it oc-
curs to the right of the leftmost character in a control mes-
sage word.
Occupies bit positions 18 through 23.
None.
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