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[Z80asm-devel] [bugs #6659] rlc r,(ix+nn) and friends don't work


From: Bas Wijnen
Subject: [Z80asm-devel] [bugs #6659] rlc r,(ix+nn) and friends don't work
Date: Wed, 29 Sep 2004 08:20:09 -0400
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This mail is an automated notification from the bugs tracker
 of the project: Z80 assembler.

/**************************************************************************/
[bugs #6659] Latest Modifications:

Changes by: 
                Bas Wijnen <address@hidden>
'Date: 
                Wed 09/29/2004 at 12:13 (Europe/Amsterdam)

            What     | Removed                   | Added
---------------------------------------------------------------------------
            Severity | 5 - Average               | 3 - Ordinary
             Summary | shift and rotate with i[xy][hl] don't work | rlc 
r,(ix+nn) and friends don't work


------------------ Additional Follow-up Comments ----------------------------
Hmm, very strange indeed.  Well, I guess this should be supported then :-)






/**************************************************************************/
[bugs #6659] Full Item Snapshot:

URL: <http://savannah.nongnu.org/bugs/?func=detailitem&item_id=6659>
Project: Z80 assembler
Submitted by: Bas Wijnen
On: Wed 11/19/2003 at 11:48

Category:  None
Severity:  3 - Ordinary
Item Group:  None
Resolution:  None
Privacy:  Public
Assigned to:  None
Status:  Open


Summary:  rlc r,(ix+nn) and friends don't work

Original Submission:  commands like rlc ixh are not supported.  They should be.

Follow-up Comments
------------------


-------------------------------------------------------
Date: Wed 09/29/2004 at 12:13       By: Bas Wijnen <shevek>
Hmm, very strange indeed.  Well, I guess this should be supported then :-)

-------------------------------------------------------
Date: Tue 09/28/2004 at 20:29       By: H. Peter Anvin <hpanvin>
No, RLC IXH doesn't exist.  The DDCB and FDCB prefixes have an even more 
strange interpretation, apparently caused by the fact that the index comes 
*before* the final opcode byte, so:

DD CB nn 00+r actually is a bizarre opcode usually called RLC r,(IX+nn).  See:

http://www.geocities.com/SiliconValley/Peaks/3938/z80undoc.htm

... for the details.













For detailed info, follow this link:
<http://savannah.nongnu.org/bugs/?func=detailitem&item_id=6659>

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