$#%&%%$ 286 Dos Merge

[Barnacle Wes]

In article <1893 at qetzal.UUCP>, rcw at qetzal.UUCP (Robert C. White) writes:
> The only thing I noticed that was wierd about this machine is that
> I had to put exactly 640k of 120-ns ram chips on the motherboard.
> There are 512k of 256k drams and 128k of 64k drams.  All chips are
> rated at 120ns.  When I tried to put 1 megabyte on the motherboard,
> all kinds of memory errors would result.

You need 100ns RAM to run at 10 MHz.  The probable reason for the
memory errors when you put one meg one the board are due to the way
most AT boards map the memory.  When you put one meg on the board,
they allocate it as 512K "normal" memory, addresses 0-512K, and 512K
of extended memory, addresses 1M - 1.5M.  Your extended memory board
was probably overlapping this address space and the two were
conflicting.

If your system is 10 MHz / 1 wait state, you are probably OK on the
memory.  If, on the other tentacle, it is 10 MHz / 0 wait states, you
may be experiencing memory errors, causing the crashes.  If your RAM
chips are sockected, you might want to buy 100 ns chips?
-- 
     /|\ 	Barnacle Wes @ Great Salt Lake Yacht Club, north branch
    / | \		     @ J/22 #49, _d_J_i_n_n_i
   /__|__\
   ___|____		"If I could just be sick, I'd be fine."
  (       /		-- Joe Housely,  owner of _E_p_i_d_e_m_i_c --
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