Appendix EProgramming Instructions
143
IR SR HR TR AR LR TC DM #
00000 to 23515 23600 to 25507 HR 0000 to 9915 TR 0 to 7 AR 0000 to 2715 LR 0000 to 6315 TC 000 to 511 Read/Wr: DM 0000 to DM 0999
Rd only: DM 1000 to DM 1999
0000 to 9999
or 0000 to FFFF
These footnote tables show the actual ranges of all data areas. Bit numbers are provided (except for DM and TC areas); remove the rightmost two digits for word numbers.
Data
Areas
Name
Mnemonic
Operand Data AreasFunctionSymbol
ASCII CONVERT
(@)ASC(86)
ASC(86)
S
Di
D
Converts hexadecimal digits from the
source word (S) into 8-bit ASCII values,
starting at leftmost or rightmost half of
the
starting destination word (D). The right-
most
digit of Di designates
the first source
digit. The next digit to the left gives the
number
of digits to be converted. The next
digit
specifies the whether the data is to
be
transferred
to the rightmost (0) or leftmost
(1) half of the first destination word. The
leftmost digit specifies parity:
0: none,
1: even, or
2: odd.
S
D
8-bit
data
0
to F
15 08 07 00
S:
IR
SR
HR
AR
LR
TC
DM
Di:
IR
HR
LR
TC
DM
#
D:
IR
HR
LR
DM
INTERRUPT CONTROL
(@)INT(89)
INT(89)
CC
N
D
Controls programmed (scheduled) inter-
rupts and interrupts from Interrupt Input
Units.
Each PC can have up to 4
IIUs. N de
-
fines
the source of
the interrupt: 000 to 003
designate the no. of the IIU; 004 desig-
nates
a scheduled interrupt. In
IIUs, bits 00
to 07 identify the interrupting subroutine,
higher
bits are not used. Bit 00 of Unit 0 cor
-
responds to interrupt subroutine 00,
through to bit 07 of Unit 3 which corre-
sponds
to subroutine 31. CC is the control
code, the meaning of which depends on
the value of N, as follows:
CC N
= 000 to 003
N = 004
000
001
002
Masks and unmasks in-
terrupt bits for the desig-
nated Unit (N) according
to the data in D. Bits cor-
responding to ON bits in
D
are
masked, those cor
-
responding to OFF bits
are unmasked. Masked
bits
are
recorded and will
be executed when they
are unmasked (unless
previously
cleared).
Clears the masked inter-
rupt
bits of the
designated
Unit (N) according to the
corresponding ON bits in
D.
The subroutines corre
-
sponding to bits cleared
in this manner will not be
executed when the bit is
unmasked.
Copies
the mask status of
the
designated IIU to D.
The interrupt time
interval is set ac-
cording
to the
data
in D (00.01 to
99.99
s) The deci
-
mal point is not
entered. The in-
terrupt is can-
celled if D is
00.00.
The time to the
first
interrupt is
set
according to the
data
in D (00.01 to
99.99
s) The deci
-
mal point is not
entered. The in-
terrupt is can-
celled if D is
00.00.
Copies
the time in
-
terval
data to D.
CC:
000
to
002
N:
000 to
004
D:
IR
HR
AR
LR
TC
DM
#
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