Data Manipulation

Data Source (Reg)	ALU/Reg Function	Data Destination
Input (or None) Mem[MAR] ACC B PC MAR Mem(PC)[0-7]	ACC (Get ACC register value) Reg (Set value to what is in the B-bus) ACC' (Bitwise inversion) Reg ∧ ACC (Select all bits that both the input and ACC have) Reg ∨ ACC (Select all bits that either input or ACC has) Reg+ACC+Cin (add Reg, ACC, and Cin) -Reg (flip sign of integer value) ACC-Reg (subtract input from ACC) Cin Load (with ALU) Clear Increment Decrement	Mem[MAR] MAR PC B ACC

Branch Logic

μ

Branch On	Destination (Hex)	Dec
N (last operation < 0) Z (last operation = 0) Uncond (no matter what)		0

Special

Fetch Next Instruction
Halt Program
Reset Program

Microcode Address (The Location of the Current Instruction)

Address (Hex)	(Dec)

Current Instruction

microcode Instruction	Base
00000000000000000000000000000000	Binary
	Hex

Rom Image

microcode

Filename to Save As:
File to Load:

micro-program

microcode source Address[microcode] Operations