Model Versions (Game Gear)

model number country type asics year 837 7398 01 japan va0 ic3 315 5378 ic2 315 5377 1990 837 7398 03 japan va0 ic3 315 5378 ic2 315 5377 1990 837 7996 europe va0 ic3 315 5378 ic2 315 5377 1991 837 7719 usa va0 ic3 315 5378 ic2 315 5377 1991 837 9024 taiwan va1 ic1 315 5535 1992 837 9024 usa va1 ic1 315 5535 1992 837 9130 japan va1 ic1 315 5535 1992 837 9130 europe va1 ic1 315 5535 1992 837 8560 japan va2 ic1 315 5535 1992 837 9537 01 usa / made in taiwan va4 ic1 315 5682 837 9537 usa / made in taiwan va4 ic 315 5682 837 10766 usa / made in taiwan va5 ic1 315 5682 837 10766 usa / made in japan va5 ic1 315 5682 1998 171 7923a made in korea va5 ic1 315 5682 1998 va0 are what we typically call 2 asic (as they have 2 asics) va1/2 are what we typically call 1 asic (as they have 1 asic) va4/5 are typically called majesco (made much later, with single but newer asic) and 9bit color (instead of 12bit) cleanscreen color modes as the cleanscreen uses csync for its video timing, there are several color modes you can select with the cleanscreen, depending on the asic version, by setting the color toggle switch and dat5 on the cleanscreen board color switch dat5 asic color mode up 0v ic3 315 5378 (9037kk015) ic3 315 5378b ic1 315 5535 (9309kx245) mode 1 up 5v ic3 315 5378a (9110pk016) ic3 315 5378a (9108ek204) mode 2 down 0v mode 3 down 5v mode 4 if you have the wrong color mode selected, using sonic 2 as an example, you will see either red instead of blue for sonic, or green instead of blue, or sometimes slight horizontal lines