13W3-M to VGA HD15-F HITACHI INTERGRAPH Switch Vertical Horizontal Sync

Hitachi and Intergraph Cornerstone - 13w3 Adapter with Switches
A very special adapter to change 13w3 to a High Density 15 Connector.

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Models Verified
Intergraph Hitachi CM2112MU
Intergraph Hitachi CM803U
CORNERSTONE 21/80 - HITACHI - Model No. CM2199MUZ

Many More Models using:
Pin-2 Vertical Sync
Pin-6 Horizontal Sync

Adapter Wiring

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Monitor Sense Bits Defined:
Switch  1       2       3       0=OFF 1=ON
Value	Bit 2	Bit 1	Bit 0	Resolution
0	0	0	0	?
1	0	0	1	1600 x 1200 76Hz
2	0	1	0	1280 x 1024 76Hz
3	0	1	1	1152 x 900 66Hz
4	1	0	0	1152 x 900 76Hz 19"
5	1	0	1	1024 x 768 76Hz
6	1	1	0	1152 x 900 76Hz 16-17"
7	1	1	1	No monitor connected