Xref: utzoo misc.wanted:11350 comp.sys.ibm.pc.misc:1988 comp.os.msdos.programmer:1112
Path: utzoo!attcan!uunet!samsung!munnari.oz.au!uhccux!robin
From: robin@uhccux.uhcc.Hawaii.Edu (Robin Amano)
Newsgroups: misc.wanted,comp.sys.ibm.pc.misc,comp.os.msdos.programmer
Subject: Re: switch settings on the motherboard of an IBM-PC XT
Message-ID: <9536@uhccux.uhcc.Hawaii.Edu>
Date: 24 Sep 90 23:54:55 GMT
References: <201647@hrc.UUCP>
Reply-To: robin@uhccux.UUCP (Robin Amano)
Followup-To: misc.wanted
Organization: University of Hawaii
Lines: 41

In article <201647@hrc.UUCP> dan@hrc.UUCP (Dan Troxel) writes:
>
>I purchased a used IBM XT Model 5160. I have no docs, and I
>need the switch settings on the motherboard and what they are used for.
>In perticular, monitor settings. I have been having trouble getting
>my mono card working on the darn thing!

PC XT  256K-640K  SYSTEM BOARD

Switch                   Function

 1                         normal operation; always off
 2               ON        without coprocessor     
                 OFF       with coprocessor
 3/4             ON/ON     256K
                 OFF/ON    512K
                 OFF/OFF   640K
 5/6             ON/ON     IBM EGA (alone or w/another adapter) or
                                   no adapter at all
                 OFF/ON    IBM  CGA  40X25
                 ON/OFF    IBM  CGA  80X25
                 OFF/OFF   IBM MONOCHROME & printer adapter or
                           Monochrome & printer adapter + CGA together
 7/8             ON/ON     1 Disk Drive
                 OFF/ON    2 Disk Drives


PC XT  64K-256K  SYSTEM BOARD

 3/4             ON/ON     64K
                 OFF/ON    128K
                 ON/OFF    192K
                 OFF/OFF   256K



-------------------------------------------------------
Robin Amano    | Internet: robin@uhunix.uhcc.hawaii.edu
UHCC           |           robin@uhccux.uhcc.hawaii.edu 
2565 The Mall  | Honolulu, HI  96822