thomas@mvac.UUCP (Thomas Lapp) (03/25/89)
I have a PS/2-70* which has 1 Meg of memory installed. I am using DOS 3.3 on
the system. When I power the PC on, the memory check only goes up to
896K before starting to boot the machine. When I use the diagnostics disk
to look at the configuration of the machine, it shows total memory as
1 Meg, but also shows 896K as "usable memory".
I was not able to change the 896K parameter with the diagnostics diskette.
Do you have any ideas as to how to access the other 128K? The wierd thing
is that a PS/2 model 60 also has 1 Meg. on it, but POST shows that it tests
all 1024K.
As per the usual customs, please e-mail me directly, and I will summarize
to the net so all can learn (but "all" doesn't have to see 20 replies!).
Thanks,
* PS/2-70 = PS/2 model 70
- tom
==============================================================================
(Nope, Reply will *not* work. Choose one from below to use for replying to
me). -------------------------------------
uucp: ...!udel!mvac!thomas ! "..so when the machine truncates
Internet: mvac!thomas@udel.edu ! excess bits, it throws them under
or ! the raised floor." -- Fred Felber
thomas%mvac.uucp@udel.edu ! (so THAT's why there are raised
! floors in computer rooms...)
-------------------------------------------------------------------------------wlat_ltd@uhura.cc.rochester.edu (Wayne Lattery) (03/26/89)
The reason why the IBM PS/2 Model 70 has checked on 896 KB in memory is that itloads its ROM into the rest of the memory. This is one of the reasons for the Mo-del 70 being so fast as ROM chips are generally very slow. So if you need at
least one Meg of memory then I suggest that you add more memory to make up the
difference.
Wayne N. Lattery.