desoldering problems and technique (and amiga 2000 mod)
oltmansg at bellsouth.net
Mon Jan 4 11:28:48 CST 2010
Good point... you would think they would have opted to make the ISA slots a completely separate board from the mainboard to save some coin... and then sell that with the bridgeboard instead of including it with the motherboard. Those extra ISA slots take up a tremendous amount of real estate.
From: Ethan Dicks <ethan.dicks at gmail.com>
To: General Discussion: On-Topic and Off-Topic Posts <cctalk at classiccmp.org>
Sent: Mon, January 4, 2010 10:23:15 AM
Subject: Re: desoldering problems and technique (and amiga 2000 mod)
On Mon, Jan 4, 2010 at 6:59 AM, Steven Hirsch <snhirsch at gmail.com> wrote:
> On Sun, 3 Jan 2010, Gene Buckle wrote:
>>> Now it's time to solder the isa connectors to the 2000 motherboard.
>>> It's the scary part for me. :-)
>> Does anyone know why the connectors were left off the board in the first
>> place? It seems kind of silly since they went to the effort to route the
>> signals and have the holes drilled.
> To save $0.50 per slot, I'd imagine.
That and probably because some 8-bit cards slopped into what later
became the spot for the 16-bit extension. That's why most ISA boards
still had 1-2 8-bit slots until very late in the game.
But C= was notoriously cheap, so I'm sure they jumped at the chance to
save a few pennies (and back when the A2000 was being designed, people
*did* still use 8-bit serial cards and such).
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