
Shift Register Instructions
Chapter 13
137
Figure 13.5
Format
for FIFO LOAD and FIFO UNLOAD Instructions
FIFO
UNLOAD
COUNTER ADDR:
030
FIFO SIZE: 001
NUMBER IN FILE: 000
FILE: 110- 110
INPUT ADDR:
010
INPUT DA
TA: 0000
030
(EN)
17
Numbers
shown are default values. Bold numbers must be replaced by userentered values. The number of default address digits
initially displayed 3, 4, or 5 will depend on the size of the data table. Initially displayed default values are governed by the I/O rack
configuration.
COUNTER ADDRESS
:
Address of the instruction in the accumulated value area of the data table.
FIFO SIZE :
The maximum number of words that the FIFO stack can contain.
NO IN FILE
:
Current number of words in the stack.
FILE :
Starting address of the FIFO stack location.
INPUT ADDRESS
:
Address of input word outisde the stack.
INPUT DA
TA :
Current data at input address.
030
(FL)
15
Numbers shown are default values. Bold numbers must be replaced by userentered values. The number of default address digits
initially displayed 3, 4, or 5 will depend on the size of the data table. Initially displayed default values are governed by the I/O rack
configuration.
COUNTER ADDRESS
:
Address of the instruction in the accumulated value area of the data table.
FIFO SIZE :
The maximum number of words that the FIFO stack can contain.
NO IN FILE
:
Current number of words in the stack.
FILE :
Starting address of the FIFO stack location.
OUTPUT ADDRESS
:
Address of output word outisde the stack.
OUTUT DATA :
Current data at output address.
030
(EM)
14
FIFO
LOAD
COUNTER ADDR:
030
FIFO SIZE: 001
NUMBER IN FILE: 000
FILE: 110- 110
OUTPUT ADDR: 010
OUTPUT DATA: 0000
030
(EN)
16
030
(FL)
15
030
(EM)
14
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