Using Apple Display Cards With NTSC Monitors



I want to use the Display Card 4/8 or 8/24 with an NTSC Monitor. Do you know
of any Apple or third-party cables? Or do you have pinout information that
will help?

This article has been archived and is no longer updated by Apple.
The pinouts, sense-pin configuration, and data characteristics are listed
below. After determining the pinouts of the monitor to which you plan to
connect the video card, you can check the pinouts of Apple cables (posted on
AppleLink) or third-party cables to see if one will work or if one must be
made.

The Macintosh Display Card 8/24GC supports any display that meets one of the
following specifications:

Sense pins Hor x Vert Dot Vert Horiz
10 7 4 Display Pixels Clock Refrsh Refrsh
----------- ---------------------- ---------- ----- ------ ------
0 0 1 Apple Portrait Display 640 x 870 57.2832 75 68.9
0 1 1 Apple Two-Page Monitor 1152 x 870 100 75 68.7
1 1 0 12" Apple Monochrome 640 x 480 30.24 66.7 35.0
Monitor
1 1 0 13" AppleColor RGB 640 x 480 30.24 66.7 35.0
Monitor
1 0 0 Interlaced Display - 12.2727 - -

0 - Grounded 1 - Not Connected
(Ground to pin 11, the Composite Sync and Vertical Sync Ground)

Note that sense pins 4, 7, and 10 are referred to as SENSE0, SENSE1, and SENSE2
in pinout tables for the video connectors.

None of the RasterOps or SuperMac 19-inch displays meets the above
specifications. Based on this, we do not think that they will work properly.

Here are the pinouts for the Macintosh Display Card 8-24 GC:

Pin Description
--- -----------------------------------------
1 Red Video Ground
2 Red Video
3 Composite Sync
4 SENSE0
5 Green Video
6 Green Video Ground
7 SENSE1
8 Not Connected
9 Blue Video
10 SENSE2
11 Composite Sync and Vertical Sync Ground
12 Vertical Sync
13 Blue Video Ground
14 Horizontal Sync Ground
15 Horizontal Sync
Shell Chassis Ground

SuperMac has announced two new monitors that work with the new Apple video
cards. The first is called the "Color Two-Page Display" and the second monitor
the "Platinum Two-Page Display."


Published Date: Feb 18, 2012