Hi.

Looking at this manual:
https://theretroweb.com/misc/documentation/24 … 9f647626252.pdf
page 23

It says "Core and bus frequencies can be set according to Table 3 below. Each Pentium processor with MMX technology
specified to operate within a single bus-to-core ratio and a specific minimum to maximum bus frequency range
(corresponding to a minimum to maximum core frequency range). Operation in other bus-to-core ratios or
outside the specified operating frequency range is not supported. For example, the 166 MHz Pentium processor
with MMX technology does not operate beyond the 66 MHz bus frequency and only supports the 2/5 bus-to-core
ratio; it does not support the 1/3, 1/2, or 2/3 bus-to-core ratios. Table 3 clarifies and summarizes these
specifications."

Question 1: are mmx cpus multiplier-locked?

On my socket7 motherboard (Zida 5DVX ver 1.21), all regular pentium work nice.
But mmx 233 could only do 133mhz or 166mhz, and mmx 200 could only do 166mhz(no matter what multiplier jumpers were closed).
I dont have mmx 233 anymore, but I plan to make mmx 200 work at 200mhz by making BF0=1 with a jumper to one of neighbour pins if possible.

Question 2: Will this work and why the mobo cant make work at 200mhz?