Video PinOuts & schematics

[mart]

Me:
>>For those who want them next week, just reply to me with something like the
>>above. For future use, we'll find a site (close to the MacMissile-site :)
>>and post the URL here.

Pickle:
>When you're ready, e-mail it to me and I can post it somewhere.

Thanks, will do.

I've been studying these Mac, VGA, SoG, BNC pinouts and schematics for a
while, and I have one question: does Multiscan (only) use the 3 sense
pinnings to tell the computer what kind of monitor is attached or is there
more going on? Can it be that I heard something about I2C? 

If so, I can put together a configurable connector, with a table of
corresponding screen sizes. If not, it's not so simple as it looked :)

-mart


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Re: Video PinOuts & schematics

[the pickle]

At 18:26 +0200 on 02/05/02, mart wrote:

>I've been studying these Mac, VGA, SoG, BNC pinouts and schematics for a
>while, and I have one question: does Multiscan (only) use the 3 sense
>pinnings to tell the computer what kind of monitor is attached or is there
>more going on? Can it be that I heard something about I2C?

AFAICT, *all* Macs use only the three sense pins to determine the type of
monitor attached.

the pickle

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Re: Video PinOuts & schematics

[Clark Martin]

At 6:26 PM +0200 5/2/02, mart wrote:
>I've been studying these Mac, VGA, SoG, BNC pinouts and schematics for a
>while, and I have one question: does Multiscan (only) use the 3 sense
>pinnings to tell the computer what kind of monitor is attached or is there
>more going on? Can it be that I heard something about I2C?
>
>If so, I can put together a configurable connector, with a table of
>corresponding screen sizes. If not, it's not so simple as it looked :)


Apple dabbled with I2C a little on the S-Video In connector on the 
X100 Power Macs and perhaps some others too.  The connection was 
there to support remote control of a video camera.  I don't know if 
there was any actual use of it or not.

The three sense pins on the Mac DA-15 video connector are the sole 
means of configuring the Mac for the monitor.  The early video 
displays simply grounded one or more of the pins.  Roughly starting 
with the MultiScan displays they started using the sense lines as 
select lines to increase the available codes.  For some 
configurations you just tie two of the sense pins together, in other 
cases you need to connect them with a diode.
-- 
Clark Martin
Redwood City, CA, USA
Macintosh / Internet Consulting
[EMAIL PROTECTED]

"I'm a designated driver on the Information Super Highway"

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M5880

[the pickle]

Google isn't any help on this one (yet) - what the heck model is an M5880?
It's not a known model number for any Mac I've ever come across, yet there
seems to be at least one other one in existence here:

http://www.cst.cmich.edu/users/stock1lj/equipment.htm

Search on the page for 5880 and you'll find a very vague description,
although based on the other information on that page, I think the 5880 was
an all-in-one - the price list shows II-series Macs at about 3x the $1099
this one is listed for, and an SE lists at $1807, so this probably isn't as
good as an SE.  (I think the prices are original purchase prices, since
there are SEs listed as being more expensive than Performa 580s.)

I've got a guy who just e-mailed me about the serial number decoder with a
Mac Plus that he claims has an M5880 serial number on it, but that doesn't
make *any* sense to me at all.  It's an M0001A according to the back label,
and was made in Singapore.  A single barcode sticker in the centre of the
bottom of the case reads:

E9366PZM5880

which is the right format, but just the *wrong* information.  36th week of
1989 makes sense for any of the following Macs:

Plus
SE FDHD
SE/30
II
IIx
IIcx
IIci

Ideas?

Double bonus points if anyone can explain the SEs on that page that claim
to be M5252 and M5251, as well as the SE/30 that claims to be an M5390...

the pickle

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Quadra 660AV Problem

[george]

I attempted to upgrade both memory sticks on my Quadra 660AV with 
32meg sticks and now I can not boot. I am running MacOs 8.1. It 
chimes but no face at startup, cursor just freezes. Checked pram 
battery, tried other memory sticks and used another hard drive 
without any luck. It will not boot from CD drive either. I can hear 
the hard drives start, but then they just quit. Any ideas on what to 
check?
George

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Re: Quadra 660AV Problem

[the pickle]

At 00:34 -0400 on 03/05/02, george wrote:

>I attempted to upgrade both memory sticks on my Quadra 660AV with
>32meg sticks and now I can not boot. I am running MacOs 8.1. It
>chimes but no face at startup, cursor just freezes. Checked pram
>battery, tried other memory sticks and used another hard drive
>without any luck. It will not boot from CD drive either. I can hear
>the hard drives start, but then they just quit. Any ideas on what to
>check?

What if you zap the PRAM?

Might have static-fried something when you upgraded, though...

the pickle

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Re: Video PinOuts & schematics

[Gregg Eshelman]

--- the pickle <[EMAIL PROTECTED]> wrote:

> AFAICT, *all* Macs use only the three sense pins to
> determine the type of
> monitor attached.

The ones with the DB15 connector do, which covers
all the non-all-in-one vintage Macs with built
in video or an Apple made NuBus video card. :)
That also covers PowerMacs up through the beige G3
too.
(Just call me Mr. Details. ;-)

"See? That's a detail. We need those."
Capt. Tagon, "Schlock Mercenary"
www.schlockmercenary.com

=
http://www.junkscience.com "All the Junk that's fit to Debunk!"

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