that was becuase a lot of motherboards shipped with only 16mb rom chips for the bios, and at the time that was not enough to enable support of all am4 processors. To counter this many vendors released upgraded versions of existing motherboards with 32mb of rom for the bios.
I believe amd was eventually able to work around this, but there was a technical hurdle in this case. People did need to rake them over the coals for it tho.
that was becuase a lot of motherboards shipped with only 16mb rom chips for the bios, and at the time that was not enough to enable support of all am4 processors. To counter this many vendors released upgraded versions of existing motherboards with 32mb of rom for the bios.
I believe amd was eventually able to work around this, but there was a technical hurdle in this case. People did need to rake them over the coals for it tho.