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From: gaynor@magnus.ircc.ohio-state.edu (Jim Gaynor)
Newsgroups: comp.sys.mac.hardware
Subject: Re: mac LC w/ VGA monitor?
Message-ID: <1991Jan29.180915.4690@magnus.ircc.ohio-state.edu>
Date: 29 Jan 91 18:09:15 GMT
References: <1991Jan24.145215.20129@mailer.cc.fsu.edu> <1991Jan25.185900.11563@maverick.ksu.ksu.edu>
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In article <1991Jan25.185900.11563@maverick.ksu.ksu.edu> paryavi@harris.cis.ksu.edu (Saiid Paryavi) writes:
>In article <1991Jan24.145215.20129@mailer.cc.fsu.edu> djb@mailer.cc.fsu.edu (David Brightbill) writes:
>>At Macworld Expo, Scully announced that standard VGA monitors could be 
>>plugged into and work with the new LC with a special adapter cable.
>>The folks working the apple booth couldn't give me the specs for the
>>cable and none of the aftermarket cable vendors at the show had a clue.
>>Has anyone actually used a VGA with the LC?  Inquiring minds want to know.
>
>Here is the layman's guide to building a cable to connect the LC to standard
>VGA monitors: 

[layman's guide deleted]

	As an addendum to Saiid's excellent post, I offer this:

	Following are the pinouts for VGA, and for Mac Video.  It has
been said, by Apple, that the Mac LC will drive a VGA monitor,
although major VGA vendors have said that not every monitor will work.
Also note that the Macintosh scan rate is 66.7 hertz, where the more
"standard" VGA scan rate is 60 hertz.

	The January 28th issue of InfoWorld has an excellent article
on the subject.

	I take absolutely no responsibility for the accuracy of this
information, nor will I be responsible if you blow the monitor, the
LC, or yourself to Kingdom Come.

	Insert smileys as necessary.
---
 Jim Gaynor - Systems Analyst 1        + "This is Serious.  He is Lost.
 The Ohio State University ACS-FM-OCES |  We must begin the Search at once."
 gaynor@magnus.ircc.ohio-state.ed      |          -Rabbit, from
 gaynor@agvax2.ag.ohio-state.edu       +          "The House at Pooh Corner"

-Cut Here-------------------------------------------------------------

+-------------------------------+
|      5    4    3    2    1    |
|                               |
 \  10   9    8    7    6      /
  |                           | 
   \  15   14   13   12   11 /
    +-----------------------+

VGA Pin-Out
-----------
1.  Red Video
2.  Green Video
3.  Blue Video
4.  Ground
5.  Ground
6.  Red Ground
7.  Green Ground
8.  Blue Ground
9.  Not Used
10. Ground
11. Synchronize Ground
12. Not Used
13. Horizontal Synchronize
14. Vertical Synchronize
15. Not Used

--------------------------------------------------------------------

+-----------------------------------------------+
|  1     2     3     4     5     6     7     8  |
 \                                             /
  |   9     10    11    12    13    14    15  |
  +-------------------------------------------+

Mac Video Pin-Out
-----------------
1.  Red Ground
2.  Red Video
3.  Synchronize
4.  Synchronize Ground
5.  Green Video
6.  Green Ground
7.  Not Used
8.  Not Used
9.  Blue Video
10. Not Used
11. Not Used
12. Not Used
13. Blue Ground
14. Not used
15. Not Used

-- 
 Jim Gaynor - Systems Analyst 1        + "This is Serious.  He is Lost.
 The Ohio State University ACS-FM-OCES |  We must begin the Search at once."
 gaynor@magnus.ircc.ohio-state.ed      |          -Rabbit, from
 gaynor@agvax2.ag.ohio-state.edu       +          "The House at Pooh Corner"