| There was an article like that in AC Vol 2, #1, 1987. (This was
before AC started putting real dates on their mags.) The technique
involves soldering RAMs together to form RAM stacks, after first
cutting their little toes off. Brrr, sounds scary! Want a copy of
the article?
- Cliff
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| ..it came out great. Still working fine these days.
One hint: Stay clear of NEC RAMs. I had a *lot* of trouble with
some, had to throw them away ($$ - ouch!). It turns out they were
a bad batch, had different CAS/RAS timing. The date code on them
was "L", so if you must go NEC be sure to avoid these.
There're also a few mods you can make to get it to work under 1.2+.
One of them involves latching on the drive LED, which is what I did.
I don't recommend it. But if you do go this way, be sure to put the
green LED in your console. One of the caps in the timing code (er,
circuit) doesn't discharge well and when powering off/on quickly
the circuit comes up enabled: Not Good. You have to keep power
cycling until the green LED is off on startup, and everyone knows
power cycling is a Bad Thing. Another way involves remapping the
memory to $C0000000 with a few F parts, although I don't know how
well it works, it sounds much better than what I have.
PS I'm a software type, and that was my first exposure to a soldering
iron. It was that easy.
^E
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