Computers (fwd)

From: PG Manney <manney_at_nwohio.com>
Date: Thu Aug 21 16:52:58 1997

Um...not quite. Please see my post.

----------
> From: classiccmp_at_u.washington.edu
> To: Manney
> Subject: RE: Computers (fwd)
> Date: Monday, August 18, 1997 9:30 PM
>
> >From the handy "Programmer's PC Sourcebook" by Thom Hogan, Microsoft
> Press, ISBN 1-55615-321-X:
>
> For Switch #1:
>
> Switch 1: number of drives, ON=drives installed, OFF=no drives (see
> switch 7/8)
> Switch 2: Not used, must be ON
> Switch 3 & 4: Memory on system board
> ON ON = 16K (PC1) or 64K (PC2)
> OFF ON = 32K (PC1) or 128K (PC2)
> ON OFF = 48K (PC1) or 192K (PC2)
> OFF OFF = 64K (PC1) or 256K (PC2)
> Switch 5 & 6: Display adapter
> ON ON = no adapter
> OFF ON = CGA 40
> ON OFF = CGA 80
> OFF OFF = MDA or >1 adapter
> Switch 7 & 8: Floppy drives
> ON ON = 1 drive
> OFF ON = 2 drives
> ON OFF = 3 drives
> OFF OFF = 4 drives
>
> For Switch #2 (some obscure combos not typed in)
> Switches 1-5: Memory Installed
> ON ON ON ON ON = 16-64K (Switches 3 & 4 control total memory)
> OFF ON ON ON = 96K (for this and below switches 3 & 4 should be OFF)
> ON OFF ON ON ON = 128K
> ON OFF OFF ON ON = 256K
> ON ON ON OFF ON = 320K
> ON OFF ON OFF ON = 384K
> ON OFF OFF OFF ON = 512K
> ON OFF ON ON OFF = 640K
> Switches 6-8: Not Used, must be OFF (switch 7 reserved for 8087 on PC2)
>
> Kai
Received on Thu Aug 21 1997 - 16:52:58 BST

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