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From: I6191008@DBSTU1.BITNET.UUCP
Newsgroups: net.micro.atari16
Subject: re: 520 and BLITTER
Message-ID: <8607171308.AA00710@ucbvax.Berkeley.EDU>
Date: Thu, 17-Jul-86 09:08:48 EDT
Article-I.D.: ucbvax.8607171308.AA00710
Posted: Thu Jul 17 09:08:48 1986
Date-Received: Fri, 18-Jul-86 01:10:05 EDT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The ARPA Internet
Lines: 25

In-Reply-To: Your message of 16 Jul 1986 1201-Edt (Wednesday).

>Shudder, horrors]  You don't want to CUT THE PINS OFF  the 68000, just
>unsolder them carefully, remove it, and solder in the socket in its plae.

John, I WANT to!
Your discription about removing a 64 pin IC was quite well, but...
I did that several times, mostly with success. But I also screwed up
a pcb by fighting to long with it. Especialy when you've got very small
pin wholes on double sided pcb's it happens that you can't suck out the
solder properly.
The pcb is very expensive, the price of the CPU is 30$ or less. For the
unexperienced it might be less dangerous just to cut the pins and
solder them out one by one. Even for this method you need something
to suck the wholes free. And what do you do with your unsoldered CPU?
You can't clean the pins properly, so they wont fit well in the socket.

By the way, the blitter chip wont need new software? It just uses the
traps? When will it be available?

And finally, I know there are special clip-on sockets, where there is
no need to remove the CPU. And why don't you solder the Blitter chip
directly on the CPU?

Johann Zuschlag (I6191008@DBSTU1.BITNET)