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Article #123Re: Shifting memory to the right
From: David P. de Jongh
Date: Fri, 30 Sep 2005 16:09
Date: Fri, 30 Sep 2005 16:09
41 lines
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3548 bytes
Don't you mean one row at a time? D de J -----Original Message----- From: IBM Mainframe Assembler List [mailto:ASSEMBLER-LIST@LISTSERV.UGA.EDU] On Behalf Of Edward E. Jaffe Sent: Friday, September 30, 2005 11:01 AM To: ASSEMBLER-LIST@LISTSERV.UGA.EDU Subject: Re: Shifting memory to the right Don Nielsen wrote: >Nothing like a dumb applications programmer question to end the week. Is there an instruction like MVCL that moves memory starting at the end working to the beginning. I have a table that is in sequence. I want to insert a new row, maintaining sequence. That requires shifting right the end of the table. It would be great to just code an MVCL to do it, but I would be overwrite data. But if MVCL started with the last byte and worked its way to the start, then the shift would be easy. Does any such instruction or function exist? > > Shifting a block of data left is easy. Shifting right must be done one-byte-at-a-time in a loop. >I guess I could do something silly and build the table starting at the end of the of memory block and shift it left as I build it. > > That's precisely what I have done in similar circumstances. -- .-----------------------------------------------------------------. | Edward E. Jaffe | | | Mgr, Research & Development | edjaffe@phoenixsoftware.com | | Phoenix Software International | Tel: (310) 338-0400 x318 | | 5200 W Century Blvd, Suite 800 | Fax: (310) 338-0801 | | Los Angeles, CA 90045 | http://www.phoenixsoftware.com | '-----------------------------------------------------------------'
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From: "David P. de Jongh" <daviddejongh@worldnet.att.net>
Newsgroups: bit.listserv.asm370
Subject: Re: Shifting memory to the right
Date: Fri, 30 Sep 2005 11:09:00 -0500
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