The processor includes eight 16 bit data registers and eight 16 bit address registers. The data registers are referred to as D0, D1, ... D7. The address registers are referred to as A0, A1, ... A7. Several instructions reference A7 implicitly as a stack pointer. Accordingly, it can also be referenced by the name SP.
In addition, the processor includes a program counter register (PC) and a condition code register (CCR). The CCR in the WC34000 contains three bits named N (negative), Z (zero) and V (overflow). These bits are changed only by the CMP (compare) instuction. They are tested by the conditional branch instructions.