Several days ago Jeff White posted a question related to the DSSAT upgrade and performance under different operating systems. We are planning to release an upgrade of DSSAT as version 3.1 during the beginning of 1996. There will be some "patches" to correct problems we have found in the various modules of DSSAT, including the crop models, weathermanager, graphics and applications programs. In addition we are considering adding a sugarcane model and a new graphics and educational program NSHOW to DSSAT. These were demonstrated earlier this month during the Agronomy Meetings. I expect that the registered owners will receive an automatic upgrade, although we have discussed the details of this procedure yet. With respect to operating systems. I am currently running DSSAT in OS2/WARP and have found no problems. It actually runs faster than in the regular DOS environment. The only minor problem is that for any graphical display you need to implement a full screen window. Availability of memory is great, as OS2 takes care of all device and network drivers. If you are looking for a true multi-tasking operating environment, I highly recommend OS2/WARP. Regards, Gerrit ======================================================================= Gerrit Hoogenboom Associate Professor Department of Biological and Agricultural Engineering The University of Georgia Griffin, Georgia 30223-1797, USA Phone: 770-228-7216 FAX: 770-228-7218 E-Mail: [log in to unmask] =======================================================================