No subject


Sun Feb 27 13:22:22 CST 2005


Switch 1 controls the memory addressing (positions 1-4) and the memory
size (positions 5-8).  You can limit the size of the recognized memory
to less than what is actually installed.

For positions 1-4 the start addresses are:
		1	2	3	4
64k		ON	ON	ON	OFF
128k		ON	ON	OFF	ON
192k		ON	ON	OFF	OFF
256k		ON	OFF	ON	ON
320k		ON	OFF	ON	OFF
384k		ON	OFF	OFF	ON
448k		ON	OFF	OFF	OFF
512k		OFF	ON	ON	ON
578k		OFF	ON	ON	OFF
640k		OFF	ON	OFF	ON
704k		OFF	ON	OFF	OFF
768k		OFF	OFF	ON	ON
832k		OFF	OFF	ON	OFF
896k		OFF	OFF	OFF	ON
960k		OFF	OFF	OFF	OFF

For positions 5-8 the memory size is set as follows:
		5	6	7	8
64k		OFF	OFF	OFF	ON
128k		OFF	OFF	ON	ON
192k		OFF	ON	ON	ON
256k		ON	ON	ON	ON

Switch 2 has the following functions:
Position 1 controls parity (On=enabled)
Position 2 Clock enable/disable
Position 3 Not Used
Position 4 enables or disables the parallel port (enabled when the
switch is off)
Positions 5 and 6 control the parallel port address (5 on sets the port
to 1, 6 on sets the port to 2, both cannot be on at the same time) 
Positions 7 and 8 control serial port addressing (7 on sets the port to
1, 8 on sets the port to 2, both cannot be on at the same time)

Contact me off list if you want more info and I'll do what I can.  I'd
be happy to answer questions from the manual, copy and mail it or even
fax it if you need.

    Erik

-----Original Message-----
From: cctech-admin at classiccmp.org [mailto:cctech-admin at classiccmp.org]
On Behalf Of Patrick Finnegan
Sent: Tuesday, July 16, 2002 2:42 PM
To: cctalk at classiccmp.org
Subject: Quadram Quadboard

Hi all, I'm trying to get two of these to work in a single PC XT so I
can
max out the memory.  I have figure out the 'left' set of dip switches
sets
the memory starting address, but need to determine the functions on the
right set of switches so I can modify the printer port I/O address,
serial
port address, and hopefully the size of memory that it thinks is on the
board.

Any help would be appreciated. Thanks.

-- Pat




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