Oversized EPROM's & Multiple Programs

Mon Jun 25 23:18:25 GMT 2001

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To those who are using, or have used, oversized EPROM's that contain =
more than one program image........

Can you simply select between say Program "A" and Program "B" while on =
the fly, or do you have to power/idle down and then switch from one to =
the other?  This would be for a two program solution in place of a =
single 27c256b chip, for a friend who has new young drivers in the =
family (think of it as a sort of valet mode).  Is more than 2 images a =
big hassle in place of a 256 chip?  The selector switch would be a keyed =
Allen Bradley jobbie.

Anyone have any interesting tidbits archived on this topic, on their =
HD's, that they can pass along?  I'm going to dive into the list =
archives over the next few nights, but any direct pointers would =
certainly help a bunch.

Walt.

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<DIV><FONT size=3D2>To those who are using, or have used, =
oversized&nbsp;EPROM's=20
that contain more than one program image........</FONT></DIV>
<DIV><FONT size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT size=3D2>Can you simply select between say Program "A" =
and&nbsp;Program=20
"B" while on the fly, or do you have to power/idle down and then switch =
from one=20
to the other?&nbsp; This would be for a two program solution in place of =
a=20
single 27c256b chip,&nbsp;for a friend who has&nbsp;new young drivers in =
the=20
family (think of it as a sort of valet mode).&nbsp; Is more than 2 =
images a big=20
hassle in place of a 256 chip?&nbsp; The selector switch would be a =
keyed Allen=20
Bradley jobbie.</FONT></DIV>
<DIV><FONT size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT size=3D2>Anyone have any&nbsp;interesting tidbits archived on =
this=20
topic, on their HD's, that they can pass along?&nbsp; I'm going to dive =
into the=20
list archives over the next few nights, but any =
direct&nbsp;pointers&nbsp;would=20
certainly help a bunch.</FONT></DIV>
<DIV><FONT size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT size=3D2>Walt.</FONT></DIV></BODY></HTML>

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