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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 |
User-agent: |
Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7) Gecko/20040917 Firefox/0.9.3 |
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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