CompuServe Messages

Kenneth: I might agree that ALL memory managers who use page frame access to expanded memory will show some form of speed degredation… and I don't know how the size of the memory cache on the motherboard will affect the results. Nonetheless, if you use extended memory only with no memory manager loaded, then you would achieve the fastest possible results on most PC clones using the PharLap DOS extender only (Autodesk has reported speed improvements on some of their machines using a memory manager). What starts making some difference is how much base memory you have available. At some point in time, with enough TSR's loaded, putting them in the 640-1M range will improve the performance of your system. Note that using HMA's and putting the TSR's above 1M >MAY< be why some people are having difficulty with their setups. I suspect that the Int15h and A20 calls made in certain situations may conflict with using HMA's, but then, I don't profess to be enough of an expert to predict what Targa boards, TSR's, CEMM (as opposed to QEMM) etc. are doing to this mess we call DOS. In any event, I don't think the speed difference should be noticeable if the system is set up properly. When you think about how many reboots using a batch file to switch system setups you do in a day, then you can decide whether QEMM is worth the investment. I don't use QEMM on my home computer… I don't reboot often enough. At the office, however, things are different… C#