What does this OI do?

Sahoo · New User Joined: 08 Jun 2006 Posts: 49

What will the following OR Immediate instruction do?
OI WK4BTS+L'WK4BTS-1,X'F0'

CICS Guy · Posted: Tue Apr 22, 2008 9:36 pm Post subject:

It insures that the sign for the ZD field is a 'F' instead of the usual 'C'......

Sahoo · New User Joined: 08 Jun 2006 Posts: 49

How is this L'WK4BTS-1 calculated

CICS Guy · Posted: Wed Apr 23, 2008 3:54 am Post subject:

manikawnth · New User Joined: 07 Feb 2007 Posts: 5 Location: Mumbai

I think it is better to say like this:
The usual Zonal decimal format is converted to a character decimal,
as ZD cannot have a signed nibble 'F'

dick scherrer · Posted: Wed Apr 30, 2008 3:13 am Post subject:

Hello,

CICS Guy · Posted: Wed Apr 30, 2008 3:35 am Post subject:

From the PoOps
Chapter 8. Decimal Instructions
Decimal-Number Formats . . . . . . . . . . . 8-1
Zoned Format . . . . . . . . . . . . . . . . 8-1
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Zoned Format
In the zoned format, the rightmost four bits of a byte are called the numeric bits (N) and normally consist of a code representing a decimal digit. The leftmost four bits of a byte are called the zone bits (Z), except for the rightmost byte of a decimal operand, where these bits may be treated either as a zone or as a sign (S).

Appendix A. Number Representation and Instruction-Use Examples
Decimal Integers . . . . . . . . . . . . . . . A-4
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The following are some examples of decimal integers shown in hexadecimal notation: