ID Number: Q74746
6.00 | 6.00
MS-DOS | OS/2
buglist6.00 fixlist6.00a
Summary:
SYMPTOMS
The Microsoft Macro Assembler (MASM) version 6.0 may generate an
incorrect offset when using the ORG directive following a previous
ORG statement that uses the current-address operator ($). For
example, incorrect code will be generated if the statement "ORG
$+1" is placed anywhere before another ORG statement.
STATUS
Microsoft has confirmed this to be a problem in MASM version 6.0.
This problem was corrected in MASM version 6.0a.
More Information:
The sample code below demonstrates this problem. You can see in the
source listing that the label "wrongoffset" has an incorrect offset.
Instead of having an offset of 200h, wrongoffset is placed at offset
304h, which is 104h plus the 200h specified in the last ORG statement.
Rather than assigning the location to 200h, the assembler added 200h
to the current location.
Sample Code
-----------
; Assemble options needed: none
_text SEGMENT
one BYTE ?
ORG 100h
two BYTE ?
ORG $+2
three BYTE ?
ORG 200h
wrongoffset LABEL word
_text ENDS
END
Source Listing
--------------
0000 _text SEGMENT
0000 00 one BYTE ?
ORG 100h
0100 00 two BYTE ?
ORG $+2
0103 00 three BYTE ?
ORG 200h
0304 wrongoffset LABEL word
0304 _text ENDS
END