The microprogram counter (MPC) contains the address of the next microcode statement for the Mic1 emulator to execute. The MPC va
lue is either the next sequential microcode instruction in the control store (PROM), or a microcode instruction in the control store pointed to by the ADDR bits in the current executing microinstruction. What part of the current executing microcode instruction determines the value placed in the MPC
The MPC computers area set of software and hardware standards that was developed by the consortium of computer firms which is led by Microsoft. It contains the address of a next microcode for the Mic1 emulator foe execution.
The part of the executing microcode instruction that determines the value which is placed in the MOC is the MAR bit. The MAR is the memory address register in the CPU which stores the memory address or such addresses to which some data will be sent and also stored.
