I have a D9200. Setting the monitor type to d9200 seemed fine until launching a vector game. Games launch but do not look very good. They were running at 800x600. Possibly some of the later d200s officially supported 800x600 but mine does not. It will run it but from what I have read it will shorten its life. I changed my monitor type to custom and only added the first 3 ranges defined for the D9200 in switchres. It would be good to have 640x480 and 800x600 D200 selections included.
SwitchRes: v0.017b, Monitor: d9200, Orientation: horizontal, Modeline generation: enabled
SwitchRes: Monitor range 15250.00-16500.00,40.00-80.00,2.187,4.688,6.719,0.190,0.191,1.018,0,0,224,288,448,576
SwitchRes: Monitor range 23900.00-24420.00,40.00-80.00,2.910,3.000,4.440,0.451,0.164,1.148,0,0,384,400,0,0
SwitchRes: Monitor range 31000.00-32000.00,40.00-80.00,0.636,3.813,1.906,0.318,0.064,1.048,0,0,400,512,0,0
SwitchRes: Monitor range 37000.00-38000.00,40.00-80.00,1.000,3.200,2.200,0.020,0.106,0.607,0,0,512,600,0,0info concerning the D9200 @ 800x600
http://easymamecab.mameworld.info/html/d9200.htm