Article # 576, added by Geoworks, historical record
| first |
previous |
index |
next |
last |
Using extended registers in GEOS.
If you write assembly code that uses extended registers be aware that when GEOS performs context switch does NOT save the high 16 bits of the extended registers. Essentially, this means don't use extended registers in standard GEOS methods and routines. You may use them in interrupt routines and driver functions. NOTE: Most GEOS devices use CPUs that do not have extended registers, so using extended-register commands will limit the platforms your application will run on.