porter@topaz.rutgers.edu (Adam L. Porter) (08/13/88)
I'm a bit unfamiliar with extended/expanded memory. Can anyone help me? I would like to use more than 640K in my turbo XT. I have chips--if I get a board, will I be in business? What kind of software will I need to get DOS to recognize (or pretend to recognize) the memory above 640K? Thanks for your help... -- ============================================================================== Adam L. Porter 272 Hamilton St. #96 New Brunswick, NJ 08901 (201) 247-6723 ==============================================================================
richard@neabbs.UUCP (RICHARD RONTELTAP) (08/14/88)
On an XT, you can only get exPANded memory. This memory is never for general DOS usage. Only programs specifically designed to, can use it. Lotus 1-2-3 is the best exapble I can think of. So, only buy the board if you are going to use software that can take advantage of it. Richard
rod@cpocd2.UUCP (Rod Rebello) (08/16/88)
In article <18847@neabbs.UUCP> richard@neabbs.UUCP (RICHARD RONTELTAP) writes: >On an XT, you can only get exPANded memory. This memory is never for >general DOS usage. Only programs specifically designed to, can use it. >So, only buy the board if you are going to use software that can take >advantage of it. It is also usable as a RAM disk which is very nice for quick access of often used data and programs.
spectre@cisunx.UUCP (Robert Sillett) (08/16/88)
In article <3022@nicmad.UUCP> brown@nicmad.UUCP (Mr. Video) writes: >In article <Aug.12.15.05.33.1988.17656@topaz.rutgers.edu> porter@topaz.rutgers.edu (Adam L. Porter) writes: > >Now, the extended memory can be turned into expanded memory (the LIM 3.2 >kind). DOS again doesn't use it, but some other programs can, like 1-2-3. > >If you want to use it for all your DOS programs, never mind, it won't. With an 8086/8088 and EEMS, you can use DESQview to access up to 8MB of memory. You can also multitask. -- Robert L. Sillett, Jr. spectre@cisunx University of Pittsburgh spectre@pittvms.BITNET "Don't ask me -- I only work here." ...!pitt!cisunx!spectre
eli@spdcc.COM (Steve Elias) (08/16/88)
RYBS electronics sells a 'hi-card' which can give DOS another 64k of memory, for a total of 704k... (they include the necessary driver). and... they're in colorado somewhere. hope that helps...
brown@nicmad.UUCP (Mr. Video) (08/17/88)
In article <11809@cisunx.UUCP> spectre@unix.cis.pittsburgh.edu (Robert Sillett) writes: <In article <3022@nicmad.UUCP> brown@nicmad.UUCP (Mr. Video) writes: <>In article <Aug.12.15.05.33.1988.17656@topaz.rutgers.edu> porter@topaz.rutgers.edu (Adam L. Porter) writes: <> <>Now, the extended memory can be turned into expanded memory (the LIM 3.2 <>kind). DOS again doesn't use it, but some other programs can, like 1-2-3. <> <>If you want to use it for all your DOS programs, never mind, it won't. < < <With an 8086/8088 and EEMS, you can use DESQview to access up to 8MB <of memory. You can also multitask. Yes, but! DOS still can't work in anything larger than 640K. Even running DesqView you don't get a full 640K for each partition. That is one reason why I went from 2.01 DesqView to VM386. Unfortunately, VM386 won't work on a 8088/86 machine, only a 80386. I understood the original poster to want DOS to get at more than 640K. DOS never will. That is being left to the OS/2 world. I'm assuming that the original poster wants DOS to be able to give programs more memory to work in, say like a spreadsheet (I know Lotus supports EMS), or maybe a database that is very large, or any other program that wants lots of memory space to hold the information in RAM. If this is not the case, then DesqView would be a way to go. -- harvard-\ att--\ Mr. Video ucbvax!uwvax.................!nicmad!brown rutgers-/ rolls-/ decvax--/
boerner@ut-emx.UUCP (Brendan B. Boerner) (08/17/88)
In article <11809@cisunx.UUCP> spectre@unix.cis.pittsburgh.edu (Robert Sillett) writes: >In article <3022@nicmad.UUCP> brown@nicmad.UUCP (Mr. Video) writes: >>In article <Aug.12.15.05.33.1988.17656@topaz.rutgers.edu> porter@topaz.rutgers.edu (Adam L. Porter) writes: >> >>Now, the extended memory can be turned into expanded memory (the LIM 3.2 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ How does one do this? Thanks. Brendan
richard@neabbs.UUCP (RICHARD RONTELTAP) (08/22/88)
[ Extenden to expanded memory ] Well, with expanded memory there is a page of memory (mostly 64K) that is paged into a certain location (below 1MB) with system calls. So to use extended memory as expanded memory, you only need a driver which switches do protected mode and copies 64K blocks from and to the extended memory with the specified system calls. Most RAM board manufacturers supply such a driver with their boards. Richard