re: Custom-burned ROMs.

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Article #43368

#43368

From: brian (b.c.) white
Date: Mon, 06 Dec 1993 10:56

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>Also, I wonder what the little beetle-looking thing inside the Dungeons
>of Daggorath cartridge is?  I remember opening it up (to install it in
>an old Coco 2, as the boot-up ROM!), only to find that 'Chip' was a little
>epoxy blob about the size of a pencil eraser. I'm sure it was a ROM,
>but what the heck kind of package was that?  Anyone know?

It's call COB (Chip-on-board).  They actually mount the die directly
onto the circuit board and run the wires from the die to circuit traces
instead of going through a package.

There is a similar technology call TAB (can't remember what it stands
for) that also mounts the chip directly to a board but it is a little
different.  The die comes with wires attached from it to pins.  It's
just that there is no ceramic or plastic package around it.

These opinions are all                      Brian                 _ /  __/  _ /
mine and you can't have               ( studer@bnr.ca )          / / __ / __ /
any.  So there!                 ( bcwhite@sunee.uwaterloo.ca ) ___/ ___/ ___/
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 The difference between theory and practice is less in theory than in practice.

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Date: Mon, 6 Dec 1993 10:56:00 +0000
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Sender: COCO - Tandy Color Computer List <COCO@PUCC.BITNET>
From: "brian (b.c.) white" <studer@BNR.CA>
Subject: re: Custom-burned ROMs.
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