QNX RTOS v4 Knowledge Base
QNX RTOS v4 Knowledge Base
| Title |
Watcom compiler support for Pentium MMX |
| Ref. No. |
QNX.000002516 |
| Category(ies) |
Development |
| Issue |
We are developing an application in the QNX4 RTOS with Watcom 10.6 and may have to implement some decimation filtering using the system CPU: a Pentium processor with MMX.
The documentation from Watcom does not include the MMX-specific instructions.
Does a later version of the Watcom compiler support MMX ? If not, can you suggest alternative compiler vendors ?
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| Solution |
Watcom 10.6 does not support MMX.
There are no more recent versions of Watcom 10.6.
However, the MMX support is just macros. If you can get your hands on the source for the macros you should be able to use them for MMX support. Since the macros will likely involve some inline assembly, you might have to translate it from whatever compiler it comes from to the Watcom form of inline asembly.
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