On 11 Jan 00, at 2:42, Hans-Juergen wrote:
> Hiho Glenn,
> (me again...)
>
> you wrote on 08.01.00 to "Re: load EPPPD high":
> >> Type of Memory Total = Used + Free
> >> ---------------- ---------- ---------- ----------
> [..]
> >> Reserved 393,216 393,216 0
> >> Extended (XMS) 15,537,296 2,335,888 13,201,408
> [..]
> >> Also, I need to know how to load SMARTDRV high. As you can
> >> see, I have 159K of upper memory, so there should be plenty to
> >> load both epppd and smartdrv high.
> >> --------------------------------------------------------------------
> GM> But, you can't load _high_ because you don't have any _high memory_
>
> There seems to be some confusion about the different terms that are
> used to describe the types of memory above 640k, not only on this
> list, but even at Microsoft, or at least at their translating
> department in Germany. As I wrote before, the part between the
> conventional memory and the first 1 MB of the extended memory is
> called "Upper Memory Blocks" (UMB) and has nothing to do with the
> "High Memory Area" (HMA) which is the first 64k of the extended memory
> starting at 1 MB. To "load something high" (with the command "lh" in
> autoexec.bat or "devicehigh" in config.sys) means the device driver or
> program is put into the UMB's, if there is enough space for them.
> If not, they are left in the conventional memory below 640k.
>
> The HMA is used by the first program that calls for its use during
> the boot sequence, but that can be changed with switches to their
> command lines. Normally MS-DOS itself will use this 64k space, if
> there's a line like DOS=HIGH in the config.sys. DOS=UMB means -
> well, take a guess... ;-)
>
> I'm not writing this especially to you, Glenn, because I assume
> that you know all this already. But perhaps someone else reading
> this can eliminate some misunderstandings in this obstacle course
> called DOS Memory Management.
>
> By the way, the extended memory above 1 MB is called XMS or EMS.
> This depends on the specific type of RAM that is built into one's
> computer and/or the type of memory manager used to emulate EMS
> memory with built-in XMS memory (this refers to the /noems and /ram
> option of EMM386.EXE).
>
> GM> What's casing that "Reserved" section of memory?
> GM> Reserved for _what_???
> GM> Obviously not for you to use as _you_ see fit.
>
> The "Reserved" section is used, if your BIOS setup enables "Shadow
> RAM" for the mainboard and the video ROM. The advantage of shadowing
> (meaning copying) the content of both ROM parts into the RAM is
> that the hardware chips used for RAM are normally much quicker than
> the ones used for ROM. So this will speed up the performance of
> almost every computer and is therefore the default setting in the
> BIOS setup.
>
> And another BTW: Those of you who use a MS-DOS version newer than 5.0
> can get extensive help to all DOS commands by just typing "help" or
> "help emm386.exe" (for example) and will be lead to the new DOS help
> screen that is even mouse-clickable for those who need it... ;-)
> The advantage of this help system is that it is easier to use and it
> goes much more into details (with examples etc.) than the short one-
> page-only-syntax-screens of the older versions.
>
> Hans-Juergen
Thanks. I wondered what the "reserved" section was. I even had
that on a machine with no windows at all, just dos. I did manage to
get EPPPD loaded high, but on three machines, if I do that,
Arachne says, "Undefined IP address" and refuses to surf..
So, I either let EPPPD remain in conventional memory, or use
my Netdial 1.3 + Arachne setup. In that, the EPPPD can be loaded
high, (It's under control of Netdial 1.3), and I get more conventional
memory for Arachne. Usually showing 148 K rather than 80 K. in
Arachne. For me, anyway, on the three machines I have running
now, getting EPPPD loaded high does not insure compete success
in getting a connection with Arachne. I'm using DOS 6.22 on all.
Thanks,
Michael L. Dawley
Pearl, Mississippi
Compaq Deskpro 575 - Pegasus Mail for Windows
