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This article was posted to the Usenet group alt.hackers in 1995; any technical information is probably outdated.

Re: OBPostHak

Article: 7885 of alt.hackers
From: (Chris Adams)
Newsgroups: alt.hackers
Subject: Re: OBPostHak
Date: 25 May 1995 17:27:10 -0500
Organization: HiWAAY Information Services
Lines: 30
Message-ID: 3q307u$
Status: RO

In article <>,
Bob Dobbins <> wrote:
>In article <3pvlkk$>,
> (Albert K T Hui) writes:
>~Have you tried NNANSI before?  It's much faster.
>Faster than no driver at all? I doubt it.
>And most importantly, is that a hack?

Actually, it IS faster than no driver at all!  MS-DOS uses the BIOS to
write to the screen, and NNANSI writes directly to video memory, and can
do scrolling by pointing the start of the video page down one row in

ObHack: Hmmm, let me see...
I got an Acecat II 5x5" graphics tablet.  I only have 2 serial ports, a
mouse hooked to the first and a modem hooked to the second (a 16550A
UART).  I put a switchbox on the second port and though all was well.
The tablet came with a neat program that lets it coexist with a mouse
under MS-Windows 3.1.  The only problem is that even if I switch the box
to an unconnected setting, the tablet driver locks the serial port so I
can't use the modem!  I wrote a pair of batch files to start Windows
that either add or remove the two lines that enable the driver using a
DOS port of sed.  I just have to exit and restart Windows to switch.  I
will probably pick up an extra serial port card soon, but in the
meantime, it works!
Chris Adams -
Simulations Director & Counselor
United States Space Camp/Academy - US Space & Rocket Center
Abandon all hope, ye who PRESS ENTER here.

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