CompuServe Messages

40047 S16/Ramblings 11-Mar-94 15:32:38 Sb: #40004-cache/burst modes Gayle, Expanded memory is not longer the standard for the PC since Windows. Because Windows as well as most newer PC programs use extended memory, there isn't much need for expanded memory unless you have a specific program you need to use which is old and only uses expanded memory. Programs like Quattro for DOS, for example, will use either type depending on what's available. Extended memory wasn't supported on the older Intel processors, but the 386/486 both support extended memory. Now if you activate EMM the expanded memory manager must allocate a 64k page frame in the UMB. If you already lose UMB for the video card, hd controller, the janus handler, and some TSRs, there won't be a contiguous 64k chunk available. It's possible that this is the root of the problem in that the page frame might take memory up to the point where something else, which needs to located in the UMB, can't find a contiguous chunk of memory. Therefore, I'd suggest you try my setup or Ron's jsut to see if it solves your problem. 135585 S12/Emulators 11-Mar-94 15:38:49Sb: #135534-#memory tweaking Gayle, I'm puzzled why you are using HIDOS.SYS. EMM386.SYS will work with the 386 BB more effectively than HIDOS.SYS. Further, if you use EMM386.SYS and need to have expanded memory, it will allocate it. /B=FFFF DOES work, because that's what I use, so I know it works. What hard drive controller are you using that is causing you a problem? Perhaps you need to change the interrupt level or port so you don't conflict with one used by the BB. There's a chart in the BB manual which lists the interrupts and ports used by the BB. Steve, The interrupt sounds plausible, but I bought my hardcard used so I don't know what it uses. The system is unable to read files off the hardcard when EMM386.SYS has /B=FFFF; consequently, the boot process cannot complete so you may have hit upon the cause. I could try booting from a floppy with that setup. That would isolate the problems to a conflict between the hardcard and EMM386.SYS with /B=FFFF. Sincerely, (Mr.) Gayle Lee Fairless 'Perfessor Fearless' from the Rocket City! via AutoPilot 1.03a