2. ACCUs
2a)
ACCU-2-L
ACCU-2-L contains information about the required function and the
data field used. It must have the following structure:
Bit no. 15 12 11 8 7 4 3 0
Function no. Address area type Data block no.
Parameters in ACCU-2-L
Function no.,
Permitted values: 1 = generate job
2 = read job status
Address area type,
Permitted values: 1 = DB data block
2 = DX data block
3 = F flag area
4 = S flag area
Data block no.,
Permitted values: 3 to 255 (only with address area type ’1’ or ’2’;
with address area type ’3’ or ’4’ irrelevant)
2b)
ACCU-1-L
No. of the 1st data field word,
Permitted values (depending on the address area type):
DB, DX: 0 to 2039
F flags: 0 to 248
(= no. of flag byte ’x ’)
S flags 0 to 4088
(= no. of flag byte ’x ’)
Note
There is no point in generating a timed job cyclically (e.g. with an
unconditional OB 151 call with function number ’1’ in OB 1).
Result
After correct processing of OB 151, the RLO, the condition code bits
OR,
ERAB and OS = 0.
OB 151: Set/Read Time for Clock-Controlled Interrupt
CPU 948 Programming Guide
C79000-G8576-C848-04
6 - 45
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