No, you can not do that in the current MPLAB versions.

I think the reason is that they share the same registry key.
Therefore it is not possible to use different MPASMWIN.exe
for different projects. The same applies to pic30-as.exe
for dsPIC. 

[HKEY_CURRENT_USER\Software\Microchip\MPLAB IDE\Tool Locations]
...
"T_MPAsm"="C:\\Program Files\\Microchip\\MPASM Suite\\MPAsmWin.exe"
"T_MPLink"="C:\\mcc18\\bin\\mplink.exe"
"T_MPLib"="C:\\Program Files\\Microchip\\MPASM Suite\\MPLIB.EXE"
"T_dsPICas"="C:\\Program Files\\Microchip\\MPLAB C30\\bin\\pic30-as.exe"
"T_dsPICld"="C:\\Program Files\\Microchip\\MPLAB C30\\bin\\pic30-ld.exe"
"T_dsPICbin2hex"="C:\\Program Files\\Microchip\\MPLAB
C30\\bin\\pic30-bin2hex.exe"
"T_dsPICcc"="C:\\Program Files\\Microchip\\MPLAB C30\\bin\\pic30-gcc.exe"
"T_dsPICar"="C:\\Program Files\\Microchip\\MPLAB C30\\bin\\pic30-ar.exe"


Regards,
Xiaofan

-----Original Message-----
From: Jan-Erik Soderholm 
Sent: Tuesday, October 18, 2005 4:53 PM
To: piclist@mit.edu
Subject: RE: [PIC] COFF file out of date?
...
Or in other words, you can use a different MPASM.EXE for your
ASM projects and C18 projects without going into the
config and change anything, not ?

I thought that was one of the points with the "tool suites"...

Jan-Erik.

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