If you want to run an AWS95 without a monitor, you need to convince the system there is a monitor attached. You can do this by building a custom cable which grounds one or more of the monitor ID signals.:
Pin Signal Description
----- ----------- ----------------------------------------
1 RED.GND Red Video Ground
2 RED.VID Red Video
3 CYSNC~ Composite Sync
4 MON.ID1 Monitor ID, Bit 1 (also known as SENSE0)
5 GRN.VID Green Video
6 GRN.GND Green Video Ground
7 MON.ID2 Monitor ID, Bit 2 (also known as SENSE1)
8 nc (no connection)
9 BLU.VID Blue Video
10 MON.ID3 Monitor ID, Bit 3 (also known as SENSE2)
11 C&VSYNC.GND CSYNC & VSYNC Ground
12 VSYNC~ Vertical Sync
13 BLU.GND Blue Video Ground
14 HSYNC.GND HSYNC Ground
15 HSYNC~ Horizontal Sync
The AWS95 supports any display, whether from Apple or from another vendor, that meets one of the following specifications: Standard Sense Codes:
Sense pins Hor-x-Vert Dot Vert Horiz
Display 10 7 4 Pixels Clock Refrsh Refrsh
---------------- -- -- -- ---------- ------- ------ ------
Apple 21" Color 0 0 0 1152 x 870 100 75.00 68.70
Apple Portrait 0 0 1 640 x 870 57.2832 75.00 68.90
12" Apple RGB 0 1 0 512 x 384 15.6672 60.15 24.48
Apple 2-Page
Monochrome 0 1 1 1152 x 870 100 75.00 68.70
NTSC - Underscan 1 0 0 512 x 384 12.2727 59.94 15.70
NTSC - Overscan 1 0 0 640 x 480 12.2727 59.94 15.70
12" Apple
Monochrome 1 1 0 640 x 480 30.24 66.70 35.00
13" Apple RGB 1 1 0 640 x 480 30.24 66.70 35.00
Notes: A sense pin value of 0 means that the pin should be grounded to the C&VSYNC.GND signal; a value of 1 means do not connect the pin.
Sense pins 4, 7, and 10 are referred to as SENSE0, SENSE1, and SENSE2 in pinout tables for the video connectors.
To produce a color NTSC signal, an RGB-to-NTSC converter is required.
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