bugZ80 assembler - Bugs: bug #51332, Wrong opcode generated for...

 
 

bug #51332: Wrong opcode generated for "add a,ixh"

Submitted by:  Tomaž Šolc <avian>
Submitted on:  Wed 28 Jun 2017 11:36:24 AM UTC  
 
Category:  None Severity:  3 - Normal
Item Group:  None Status:  None
Privacy:  Public Assigned to:  None
Open/Closed:  Open

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Wed 28 Jun 2017 11:36:24 AM UTC, original submission:

Hi,

z80asm generates a wrong opcode for "add a,ixh" (and possibly other undocumented instructions involving IXH and IXL).

How to reproduce (using latest code from git, commit f49176a):

$ cat test.asm
add a,ixh
$ src/z80asm -o test.bin test.asm
$ hd test.bin

                1. dd 85

Generated opcode should be "dd 84" (opcode for "add a,h" with "dd" prefix). See:

http://www.z80.info/z80undoc.htm

If this project is still maintained, I can make a patch for this bug, like I recently did for "inc ixh".

Best regards
Tomaž

Tomaž Šolc <avian>

 

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