Software Support > GroovyMAME

Screen cutoff horizontally left and right

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Pengo2040:
I use groovymame on a CRT on an old Emachines T3422. it works great but cuts off a significant portion of the screen both left and right. The TV's service menu only allows vertical adjustment. is there anything I can do other than using mames sliders?

Pengo2040:
Tv is a ct27d10b I believe (the sticker fell off long ago)

psakhis:
You need to edit custom crt_range on mame.ini, for that a very good tool is arcadeOSD

@Calamity very soon release a GM version with sliders for adjust geometry, this help you a lot.

Pengo2040:
how do I adjust? is there a guide somewhere?

psakhis:
For horizontal resize, you need modify h front porch, hsync and h back porch on crt_range0 from mame.ini

crt_range0  15625-16200, 49.50-65.00, 2.000, 4.700, 8.000, 0.064, 0.192, 1.024, 0, 0, 192, 288, 448, 576

If you are in Windows, with crt emudriver you have a tool arcadeOSD that help you know these values.

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