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What is FWACBAR

 
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Harvey Sullivan

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PostPosted: Sat Jan 05, 2008 8:04 am    Post subject: What is FWACBAR
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Any old CICS programmers out there? I see this in some old macro programs I am converting to command CICS. Since I don't have any manuals is this a local thing or does it have any significance as a naming convention to macro level programs? Thanks for any help you can give. Harvey
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enrico-sorichetti

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PostPosted: Sat Jan 05, 2008 2:09 pm    Post subject: Reply to: What is fwacbar?
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File work area base address
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Earl Haigh

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PostPosted: Sat Jan 05, 2008 10:29 pm    Post subject: Reply to: What is fwacbar?
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If my memory serves me correctly,

fwacbar is an assembler tag equated to a register defined when you copy
the DFHFWADS dsect


after reading a cics file in macro level , you need to establish
addressability to the DFHFWADS area, normaly

L FWACBAR,TCAFCAA
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Harvey Sullivan

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PostPosted: Mon Jan 07, 2008 11:23 am    Post subject: Re: Reply to: What is fwacbar?
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Earl Haigh wrote:
If my memory serves me correctly,

fwacbar is an assembler tag equated to a register defined when you copy
the DFHFWADS dsect


after reading a cics file in macro level , you need to establish
addressability to the DFHFWADS area, normaly

L FWACBAR,TCAFCAA


Hi Earl, I think your memory is pretty good. My situation is PL/I but it is about the same thing. I find FWACBAR = TCAFCAA ; every where throughout the program. these are pointers which is just about the same thing as loading regs in ALC. What I am having a real problem with is that I found:
%INCLUDE (DFHFWADS);
2 RL2 BIN FIXED(15),
2 INREC CHAR(1498);

The Include is like a DSECT in ALC but the strange part for me right now is the 2 fields appended to the end of DFHWADS as it seems like a record is being placed in this area after file reads then used to update records from. I think this is a coincedence at the moment and the OP did not understand something. Anyway thanks for your response and if you can shed any light on this it would be greatly appreciated. Of course I have no documetation on macro level and the DFHWADS copybook is long gone so this makes it more of a mystery. Thanks, Harvey
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William Thompson

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PostPosted: Mon Jan 07, 2008 9:44 pm    Post subject: Re: Reply to: What is fwacbar?
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Harvey Sullivan wrote:
What I am having a real problem with is that I found:
%INCLUDE (DFHFWADS);
2 RL2 BIN FIXED(15),
2 INREC CHAR(1498);

The Include is like a DSECT in ALC but the strange part for me right now is the 2 fields appended to the end of DFHWADS as it seems like a record is being placed in this area after file reads then used to update records from.
Consider the included DFHFWADS to be a standardized header returned with the actual record - The RL2 looks like a record length while the INREC is the actual data.....
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Harvey Sullivan

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PostPosted: Mon Jan 07, 2008 11:09 pm    Post subject: What is fwacbar?
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William thanks you are right it is a variable length record as defined in VSAM and many pointers (not fwacbar) are set on it. I just wonder why the OP happened to place the spot for the record there without a higher level (1) identifier. I think the record definition could have really gone anywhere. Maybe I should just let curious minds rest until testing occurs. Thanks, Harvey
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Harvey Sullivan

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PostPosted: Fri Jan 11, 2008 12:27 am    Post subject: Re: Reply to: What is fwacbar?
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Earl Haigh wrote:
If my memory serves me correctly,

fwacbar is an assembler tag equated to a register defined when you copy
the DFHFWADS dsect


after reading a cics file in macro level , you need to establish
addressability to the DFHFWADS area, normaly

L FWACBAR,TCAFCAA


Earl, what is the equivalant to TCAFCAA in command level? Is it still around somewhere?
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Earl Haigh

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PostPosted: Fri Jan 11, 2008 6:59 pm    Post subject:
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dfhfwads, fwacbar, and tcafcaaa
is no longer needed for command level
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JPeters

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PostPosted: Mon Mar 24, 2008 8:50 pm    Post subject:
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Henry - FWACBAR stands for File Work Area CSect Base Address Register.

I have some pretty extensive Macro LVL experience so I may be able to help answer any questions you may have. A very good manual to have a a resource would be the "CICS DATA AREAS" manuals for the releases the program(s) were written under. Macro goes back to at least Release 1.7 of CICS, this is the release I wrote under. I do have a macro level high level storage layout that I could e-mail to you if you want a copy.

JPeters
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