6F3B0253
Basic Hardware and Function 111
7. Instructions
Compare instructions (continued)
FUN
No. Name Expression Function Steps Speed
(µs) Page
108 Unsigned
greater than
−[ A U> B ]−Turns ON output if A > B.
(Unsigned integer compare) 3 190
109 Unsigned
greater than or
equal
−[ A U>= B ]−Turns ON output if A ≥ B.
(Unsigned integer compare) 3 191
110 Unsigned
equal
−[ A U= B ]−Turns ON output if A = B.
(Unsigned integer compare) 3 192
111 Unsigned
not equal
−[ A U<> B ]−Turns ON output if A ≠ B.
(Unsigned integer compare) 3 193
112 Unsigned
less than
−[ A U< B ]−Turns ON output if A < B.
(Unsigned integer compare) 3 194
113 Unsigned
less than or
equal
−[ A U<= B ]−Turns ON output if A ≤ B.
(Unsigned integer compare) 3 195
Special data processing
FUN
No. Name Expression Function Steps Speed
(µs) Page
If A is a device:
Sets device A to ON.
114 Device/register
set
−[ SET A ]−
If A is a register:
Stores HFFFF in register A.
2 4.2 196
If A is a device:
Resets device A to OFF.
115 Device/register
reset
−[ RST A ]−
If A is a register:
Stores 0 in register A.
2 4.2 197
118 Set carry −[ SETC ]−Sets the carry flag to ON. 1 4.2 198
119 Reset carry −[ RSTC ]−Resets the carry flag to OFF. 1 4.2 199
120 Encode −[ A ENC (n) B ]−Finds the uppermost ON bit
position in the bit file of size 2n
bits starting with register A, and
stores it in B.
457.0 -
141.4 200
121 Decode −[ A DEC (n) B ]−In the bit file of size 2n bits
starting with register B, sets ON
the bit position indicated by
lower n bits of A, and resets
OFF all other bits.
469.5 -
99.1 201
122 Bit count −[ A BC B ]−Counts the number of ON bits
of A and stores it in B.3 202
147 Flip-flop S F/F Q
R ASets ON device A when set
input (S) is ON, and resets OFF
device A when reset input (R) is
ON.
(Reset takes priority)
2 26.7 215
149 Up-down
counter U U/D Q
C
E A
While enable input (E) is ON,
counts up or down the number
of cycles the count input (C)
comes ON, depending on the
up/down select input (U).
Up when U is ON, down when U
is OFF.
2 30.1 216