mains unchanged, and the instruction actually exe-
uted byEXECUTE is Op Code B, 0, B. D. I MvclIT 112 1151 100 100
move 113 bytes.
Assembly Language Examples
These programming examples use theSystem/360 as
sembly-language format and mnemonics. In general,
the operands are shown symbolically with indexing or
length specification following the symbol and enclosed
in parentheses. Lengths are given as the total number
of bytes in the field. This differs from the machine
definition regarding lengths which states that the
length is the number of bytes to be added to the field
address to obtain the address of the last byte of the
field. Thus the machine length is one less than the
assembly-language length. The assembly language
automatically subtracts one from the length specified
when the instruction is assembled.
Examples
l. Decimal right shift -even number of places.
Assume symbolic location"Source" is: Source: 12 34 56 78 9S and we wish to drop two places. MOVE NUMERICS (MVN) can be used to accomplish this Source MVN Source + 3 (1), Source + 4 12 34 56 7S 9S
bohc locatIOnSource, the result is accomplished.
2. Decimal right shift -odd number of places.Source: 12 34 56 78 9S Assume we wish to drop three places.
The move with offset(MVO) instmction is used. Source MVO Source (5), Source (3) 00 01 23 45 6S 3. Decimal left shift -even number of places.
Assume tbe following at symbolic location"ZERO." Zero: 00 00 Source: 12 34 56 78 9S A left shift of four places can be performed as follows: Source MVC Source + 5 (2), Zero 12 34 56 78 9S 00 00 MVN Source + 6 (1), Source + 4 12 34 56 78 9S 00 OS NI Source + 4,240 12 3456 78 90 00 OS . Note the number 24010 in the AND IMMEDIATE instmction pro
VIdes a mask of11110000 which is to be used to make the old
sign positions zero.
128
4. Decimal left shift -odd number of places.Zero: 00 00 Source: 12 34 56 78 9S Assume the shift to be three places. Source MVC Souree + 5 (2), Zero MVN Source + 6 (1), Source + 4
NISouree + 4, 240 MVO Source (6), Source (5)
12 34 56 789S 00 00 12 34 56 78 9S 00 OS 12 34 56 78 90 00 OS 01 23 45 67 89 00 OS 5. A master inventory file is to be updated by issue
and receipt transactions. There may be multiple trans
actions pertaining to a master record. Both inactive
and updated master records are to be rewritten. The
following calculations are performed to update the
master:
Receipts
l. Receipt quantity X unit cost== receipt cost
2. Receipt cost + total cost== new total cost
3. Receipt quantity + quantity on hand new
quantity
4. New total cost--;- new quantity == new average
unit cost
Issues
l. Quantity on hand -issue quantity== new quantity
(if quantity on hand is less than issue quantity, go
to an exception routine) .
2. Issue quantity X average unit cost== issue cost
3. Total cost -issue cost== new total cost
4. If new quantity is not greater than the reorder level,
go to an exception routine.> Record Description NI aster Record:
Item #: 6 alphameric characters
Description:20 alphabetic characters
Quantity: 7 digits plus sign
Total cost: 11 digits plus sign (2 decimal places)
Average unit cost: 7 digits plus sign (3 decimal places)
Reorder level: 5 digits plus sign
Transaction Record:
Type code: 1 digit plus sign
(plus 1== receipt)
( plus 2== issue)
Item #: 6 alphameric characters
Quantity: 5 digits plus sign
Receipt unit cost: 6 digits plus sign (2 decimal places)
uted by
move 113 bytes.
Assembly Language Examples
These programming examples use the
sembly-language format and mnemonics. In general,
the operands are shown symbolically with indexing or
length specification following the symbol and enclosed
in parentheses. Lengths are given as the total number
of bytes in the field. This differs from the machine
definition regarding lengths which states that the
length is the number of bytes to be added to the field
address to obtain the address of the last byte of the
field. Thus the machine length is one less than the
assembly-language length. The assembly language
automatically subtracts one from the length specified
when the instruction is assembled.
Examples
l. Decimal right shift -even number of places.
Assume symbolic location
bohc locatIOn
2. Decimal right shift -odd number of places.
The move with offset
Assume tbe following at symbolic location
VIdes a mask of
sign positions zero.
128
4. Decimal left shift -odd number of places.
NI
12 34 56 78
and receipt transactions. There may be multiple trans
actions pertaining to a master record. Both inactive
and updated master records are to be rewritten. The
following calculations are performed to update the
master:
Receipts
l. Receipt quantity X unit cost
2. Receipt cost + total cost
3. Receipt quantity + quantity on hand new
quantity
4. New total cost
unit cost
Issues
l. Quantity on hand -issue quantity
(if quantity on hand is less than issue quantity, go
to an exception routine) .
2. Issue quantity X average unit cost
3. Total cost -issue cost
4. If new quantity is not greater than the reorder level,
go to an exception routine.
Item #: 6 alphameric characters
Description:
Quantity: 7 digits plus sign
Total cost: 11 digits plus sign (2 decimal places)
Average unit cost: 7 digits plus sign (3 decimal places)
Reorder level: 5 digits plus sign
Transaction Record:
Type code: 1 digit plus sign
(plus 1
( plus 2
Item #: 6 alphameric characters
Quantity: 5 digits plus sign
Receipt unit cost: 6 digits plus sign (2 decimal places)
