6BX/VIA/ZX86
Jumper Setting

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CPU Bus Frequency JP1 On = Close   Off = Open
CPU ModelRatio Bus Freq JP1
A B C D
233 MHz 3.5 x 66.6 MHz Off Off On On
266 MHz 4.0 x 66.6 MHz On On Off On
300 MHz 4.5 x 66.6 MHz Off On Off On
333 MHz 5.0 x 66.6 MHz On Off Off On
366 MHz 5.5 x 66.6 MHz Off Off Off On
400 MHz 6.0 x 66.6 MHz On On On Off
350 MHz 3.5 x 100 MHz Off Off On On
400 MHz 4.0 x 100 MHz On On Off On
450 MHz 4.5 x 100 MHz Off On Off On
500 MHz 5.0 x 100 MHz On Off Off On
550 MHz 5.5 x 100 MHz Off Off Off On
600 MHz 6.0 x 100 MHz On On On Off

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