[comp.sys.ibm.pc] The solution....

jjoshua@topaz.rutgers.edu (Jon Joshua) (06/04/88)

Thanks to everyone who gave me suggestions concerning my memoy upgrade
problem.  The solution was not a too expensive one.

Since I could not split a bank of memory between base memory and
extended memory, I was forced to buy an extended memory board.

I now have 640k on the motherboard and 512k on a Dr. Dr. Zucker
Zuckerboard.  This piece of hardware was about $80.00 and can be
expanded to hold up to 9meg of extended memory.

I now have a 128k print buffer and a 384k disk-cache.  Everything is
working rather well.  If you have anything else that I might want to
put in the extra memory, please tell.

If you are thinking about upping you memory please be warned about the
following.... 

	1.  Chip prices are high!  To up your memory by 512k you 
	    will need 18 256k drams.  These chips will run you 
	    $12.00-$15.00 *EACH*.  I got a steal from a local 
	    electrronics store that had almost enough going for
	    $5.95 each.

	2.  Make sure that the chips are the right speed.  If your
	    machine is 1 wait state you can go with slow (120-150
	    nsec) chips but if your machine is a 0 wait state machine 
	    you will need the faster chips.

	3.  Be *very* careful when replacing the chips.  A bent pin
	    is nothing to get too worried about but even on a humid
	    day and even after discharging myself I still managed to
	    blow out 2 chips.  Since this was my first try at
	    something like this I probably made a stupid move and
	    got charged somehow..... From now on, I will always have
	    one hand touching a grounded surface.


It is nice to watch the memory check go up to 1152k when I boot the
machine.  Now to add another terminal and get some multi-tasking
going..... 
-- 
 _____________________________________________________________________________
|o|   Jonathan Joshua    jjoshua@topaz.rutgers.edu          Why not...      |o|
|o|                                                   Nothing better to do  |o|
|o|                 Anything is possible,                                   |o|
\o|                     except for skiing through a revolving door.         |o|
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