■
Format of data buffer (FIFO buffer)
Buffer size
Stored data amount
Reading pointer
Writing pointer
・・・
Size of the data buffer area
・・・
Stored data amount (by operation unit)
・・・
Relative number from [D]+4
・・・
Relative number from [D]+4
Data buffer area
* The data buffer area is not cleared.
Default: [n] (buffer size)
Default: H 0000
Default: H 0000
Default: H 0000
[D]
[D]+1
[D]+2
[D]+3
・
・
・
・
・
・・
・
■
Format of data buffer (LIFO buffer)
Buffer size
Stored data amount
Fixed to 0
LIFO pointer
・・・
Size of the data buffer area
・・・
Stored data amount (by operation unit)
・・・
Fixed to 0
・・・
Relative number from [D]+4
Data buffer area
* The data buffer area is not cleared.
Default: [n] (buffer size)
Default: H 0000
Default: H 0000
Default: H 0000
[S]
[S]+1
[S]+2
[S]+3
・
・
・
・
・
・・
・
■
Processing
1. [n] (buffer size) is specified in [D] (buffer start).
2. The range from [D]+1 (stored data amount) to [D]+3 (writing pointer) is cleared to zero.
K 8
K 128
K 0
K 4
K 6
K 1
K 3
K 5
K 7
K 0
K 2
K 4
K 6
DT0
DT1
DT2
DT3
DT4
DT5
DT6
DT7
K 0
K 0
K 5
K 7
DT0
DT1
DT2
DT3
DT4
DT5
DT6
DT7
DT8
K 8
DT8
(Buffer size)
(Stored data amount)
(Writing pointer)
(Reading pointer)
[n]…K 128(U 128) [D]…DT0
Example) Operation unit: 16 bits (US, SS)
[i]…US,SS
■
Related instructions
● FIFR (Read data from the 16- or 32-bit data buffer (First-In-First-Out))
● BUFW (Write data in the 16- or 32-bit data buffer)
● LIFR (Read data from the 16- or 32-bit data buffer (Last-In-First-Out))
■
Flag operations
Name
Description
SR7
SR8
(ER)
To be set in the case of out-of-range in indirect access (index modification).
To be set when [n] (buffer size) is out of the available range.
8.17 DEFBUF (Buffer Definition)
WUME-FP7CPUPGR-12
8-35
Содержание FP7 Series
Страница 2: ... MEMO 2 WUME FP7CPUPGR 12 ...
Страница 18: ... MEMO xviii WUME FP7CPUPGR 12 ...
Страница 52: ... MEMO 1 34 WUME FP7CPUPGR 12 ...
Страница 61: ...Example 2 Use PSHS RDS or POPS instruction 2 1 Structure of Instructions WUME FP7CPUPGR 12 2 9 ...
Страница 104: ... MEMO 2 52 WUME FP7CPUPGR 12 ...
Страница 123: ...3 9 ANS AND stack WUME FP7CPUPGR 12 3 19 ...
Страница 125: ...3 10 ORS OR Stack WUME FP7CPUPGR 12 3 21 ...
Страница 129: ...3 11 PSHS Push stack RDS Read stack POPS Pop stack WUME FP7CPUPGR 12 3 25 ...
Страница 139: ...4 CNDE instruction 5 Step ladder instructions 6 Subroutine instructions 3 16 ALT Alternate out WUME FP7CPUPGR 12 3 35 ...
Страница 146: ... Application example of timer instructions serial connection of timers 3 17 TM Timer 3 42 WUME FP7CPUPGR 12 ...
Страница 147: ... Application example of timer instructions parallel connection of timers 3 17 TM Timer WUME FP7CPUPGR 12 3 43 ...
Страница 190: ...3 26 JP LBL Jump Label 3 86 WUME FP7CPUPGR 12 ...
Страница 239: ...Name Description SR8 ER 3 46 ST ST ST ST ST ST Data Comparison Start WUME FP7CPUPGR 12 3 135 ...
Страница 246: ... MEMO 3 142 WUME FP7CPUPGR 12 ...
Страница 251: ...Name Description SRA Depending on the comparison result SRB SRC 4 1 CMP Data Compare WUME FP7CPUPGR 12 4 5 ...
Страница 258: ... MEMO 4 12 WUME FP7CPUPGR 12 ...
Страница 277: ...F E D C B A 9 8 7 6 5 4 3 2 1 0 Digit 3 Digit 2 Digit 1 Digit 0 bit 5 8 DGT Digit Data Transfer WUME FP7CPUPGR 12 5 19 ...
Страница 304: ... MEMO 5 46 WUME FP7CPUPGR 12 ...
Страница 321: ...Name Description ER 6 7 DIVFP2 Division FP2 Compatible WUME FP7CPUPGR 12 6 17 ...
Страница 348: ... MEMO 6 44 WUME FP7CPUPGR 12 ...
Страница 388: ... MEMO 7 40 WUME FP7CPUPGR 12 ...
Страница 438: ... MEMO 8 50 WUME FP7CPUPGR 12 ...
Страница 450: ... MEMO 9 12 WUME FP7CPUPGR 12 ...
Страница 520: ... MEMO 10 70 WUME FP7CPUPGR 12 ...
Страница 602: ... MEMO 11 82 WUME FP7CPUPGR 12 ...
Страница 622: ... MEMO 12 20 WUME FP7CPUPGR 12 ...
Страница 650: ... MEMO 13 28 WUME FP7CPUPGR 12 ...
Страница 1160: ... MEMO 18 66 WUME FP7CPUPGR 12 ...
Страница 1188: ... MEMO 19 28 WUME FP7CPUPGR 12 ...
Страница 1211: ...20 4 ASCII Code Table JIS8 Code Table Reference Table ASCII Codes 20 4 ASCII Code Table JIS8 Code Table WUME FP7CPUPGR 12 20 23 ...
Страница 1220: ... MEMO WUME FP7CPUPGR 12 ...
Страница 1221: ... MEMO WUME FP7CPUPGR 12 ...