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6502Em

man from Exile

If you are using an Iyonix, you may need to install a suitable 640x500 mode so that MODE 7 works. You also need to have a working MODE 21 (640x512).

Here are a couple of 640x512 modes and the corresponding modified 640x500 modes. You can either use these or modify a 640x512 of your own similarly.

# 640 x 512 (60Hz)
startmode
mode_name:640 x 512
x_res:640
y_res:512
pixel_rate:32000
h_timings:64,76,30,640,30,30
v_timings:3,16,40,512,40,4
sync_pol:3
endmode

# 640 x 500 (60Hz)
startmode
mode_name:640 x 500
x_res:640
y_res:500
pixel_rate:32000
h_timings:64,76,36,640,36,30
v_timings:3,16,40,500,40,4
sync_pol:3
endmode

# 640 x 512 (70Hz)
startmode
mode_name:640 x 512
x_res:640
y_res:512
pixel_rate:37500
h_timings:64,76,30,640,30,30
v_timings:3,16,40,512,40,4
sync_pol:3
endmode

# 640 x 500 (70Hz)
startmode
mode_name:640 x 500
x_res:640
y_res:500
pixel_rate:37500
h_timings:64,76,36,640,36,30
v_timings:3,16,40,500,40,4
sync_pol:3
endmode

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