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Assembler - QSAM DCB for above the line

 
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TValintakonis

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PostPosted: Tue Dec 11, 2007 8:10 pm    Post subject: Assembler - QSAM DCB for above the line
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I have heard that it is possible to have QSAM DCB's now located above the line. I also heard this was made possible through the use of an Extended DCB, but have not been able to find specific documentation on this (above the line). There is information on extended DCB but not I could not find out if this would accomplish putting it above the line. Does anyone have any info on which manual would be relevant to this topic. Thanks
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Deru Sudibyo
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Joined: 30 Nov 2007
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PostPosted: Thu Dec 20, 2007 3:22 am    Post subject:
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I think "above the line" here means AMODE 31. As far as i know, most of address fields in DCB are 3-byte fields, which indicate that the RMODE must be 24. See DCB mapping macro. To access it from AMODE 31, use MODE=31 in OPEN macro.

PS: For DCBE, yes, you can put it above the line.
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