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AH = F0h AL = speed code (see #00614) if AL=09h, CX = speed value, 1 (slowest) to 50 (full), 3 ~= 8088
Note: Also supported by some versions of AMI BIOS dated June 1992 or later; speed codes 0 or 1 are used for Low Speed, 2 for High Speed
(Table 00614) Values for speed code: 00h equivalent to 6 MHz 80286 (COMMON) 01h equivalent to 8 MHz 80286 (FAST) 02h full 16 MHz (HIGH) 03h toggles between 8 MHz-equivalent and speed set by system board switch (AUTO or HIGH) 08h full 16 MHz except 8 MHz-equivalent during floppy disk access 09h specify speed directly
Category: Vendor-specific BIOS Extensions - Int 16h - C
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