Re: Problems transferring DOS3.3 from PC to IIe :(

[Rubywand <rubywand@swbell.net>]

"Jim L." writes ...
> 
> As it turns out, I think I did some bad stuff to the machine last night.
> After writing the post to usenet last night, I decided to give a shot to 
> different combinations of cards and at times I inserted cards while the 
> machine was on -

     Shame, shame.


> then there was the smell of electronics burning.  The next time I had the
> thing on, my display was split into four mini-sections of a screen filled
> with characters and the drives did not spin.  I believe I did something
> to the a ROM chip.

     The "electronics burning" business sounds kind of bad; but, it could make
it easier to track down a failed component-- e.g. a burned chip or fried
resistor.

     The usual suspects for Slot-related problems are the Slot interface IC's
which handle signals like I/O Select. You might check (or just replace) the
74LS138's at H-12 and H-2 as well as the ROM Select IC (another 74LS138) at
F-12.

     There are lots of other possibilities. One positive factor is that when a
logic chip craters it can act as a momentary protection for others and limit
the damage.



> I had plans anyway to get another machine for parts...
 ....

     Well, since some people are bragging about gettin //e's for 75 cents and
GS's for free (_not_, mind you, that I am at all green with envy),  getting
another machine should not be too difficult.



Rubywand