On Apr 29, 2011, at 1:31 PM, ojman873 wrote:
Dear all:
I have a Performa 475 that I've recently rediscovered in my basement.
A few years ago, my family discarded the monitor because when the
computer was turned on, there was no video displayed. At the time, I
was able to convince them to keep the computer itself since it doesn't
take up much space. I know now that the most likely reason for the
video issue is a bad/dead PRAM battery.
I recently bought a pair of 512Kb VRAM chips to replace the stock 256K
pair. As I understand it, this will allow the computer to potentially
support a much higher resolution, 800x600 or 1024x768, on modern 15"
to 17" monitors. Can I connect a VGA monitor, since they're much
easier to find, via a legacy DB-15 to VGA adapter? Here is a link to
what I am talking about:
http://cgi.ebay.com/New-VGA-SVGA-Monitor-Legacy-Mac-DB-15-Video-
Adapter-/360361483585?pt=LH_DefaultDomain_0&hash=item53e737dd41
If I am able to use such an adapter, can I connect a flat panel
monitor? Does anyone know how many colors/what resolution could be
supported? Does a 15" vs. 17" monitor make a difference?
Finally, how exactly do I go about putting in the new VRAM? I want to
be extra cautious and do it right so I don't break anything. Should I
insert at an angle and then straighten it up?
Thanks in advance for all your help!
Regards,
ojman873z
I use both 15" and 17" flat panels with all my legacy machines with
the adaptor plugs I happily got rid of all
the CRT's years ago. Also the VRAM sticks go back in in the reverse
fashion as you remove them. If they
have side clips on them they flip down to remove.
JOHN CARMONNE
Yorba Linda CA
92886 USA
From TiBook 867
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