The cB1 stepping is logically equivalent to the C2-step, but on a different manufacturing process. The mcB1 step is logically equivalent to the cB1 step (except it does not support DP, APIC or FRC). The mcB1, mA1, mA4 and mcC0-steps also use Intel's Voltage Reduction Technology and are available in the TCP and/or SPGA package, primarily to support mobile applications. The mxA3 is logically equivalent to the xA3 stepping (except it does not support DP or APIC).
This S-spec has standard voltage specifications.
The part is not tested to support 82498/82493 and 82497/82492 cache timings.
q0772 (intel pentium 133 mhz)/A80502-133 Other S-Spec number