AmoebaVirtualMachineV2

This is a VBA program that emulates a simple Von Neumann architecture computer.
Download the latest release here

How it works?

It takes 8 bit binary code (00001111) and runs them. The first 4 bits are the Operation Code and the other 4 bits are a number for a address location or a number

Operation Code Set

This is the operation codes also find a pdf version Here

Opcode	Instruction	Description
0000	LDA	Load the Accumulator with the contents of the addressed location.
0001	STA	Store the contents of the Accumulator in the addressed location.
0010	LDAN	Load the Accumulator with the actual value of the address.
0011	ADD	Add the contents of the addressed location to the value in the Accumulator. The result is stored in the Accumulator.
0100	SUB	Subtract the contents of the addressed location from the value in the Accumulator. The result is stored in the Accumulator.
0101	MLT	Multiply the contents of the addressed location by the value in the Accumulator. The result is stored in the Accumulator.
0110	DIV	Divide the value in the Accumulator by the contents of the addressed location. The result is stored in the Accumulator (no remainder).
0111	JF	Jump forward a number of instructions. The number is given by the contents of the addressed location.
1000	JB	Jump back a number of instructions. The number is given by the contents of the addressed location.
1001	JFE	If the contents of the Accumulator is zero, jump forward a number of instructions given by the contents of the addressed location.
1010	JBE	If the contents of the Accumulator is zero, jump back a number of instructions given by the contents of the addressed location.
1011	CLO	Clear the output.
1100	DAN	Display the contents of the Accumulator in the output as a number.
1101	DAC	Display the contents of the Accumulator in the output as a character.
1110	NOP	No operation.
1111	END	End program execution.

Example code

00100101 00010000 00100100 00010001 00000000 00110001 00010010 11110000 This code does 4 + 5 (= 9) and stores the output.

00101111 00010000 00101100 00010001 00110000 00110000 00110000 00110001 11000000 11110000 This code does 27 + 42 (= 69) and prints the output.

Pictures