OS/2 2.0 does not support RAM-loaded ABIOS computers. OS/2 2.0 returns BIT 0 set to 0 on computers with RAM-loaded ABIOS.

OS/2 2.1 supports RAM-loaded ABIOS computers. OS/2 2.1 returns BIT 0 set to 1 on machines with RAM-loaded ABIOS.

The values placed in the model and submodel fields are byte values. The high-order byte of the model and submodel fields are 0.