microVM

A really simple virtual machine, that loads a basic bytecode into ram and executes it.

VM

• Load / Run

  • Load BIN files into RAM and execute them.

• Compiler

  • Compile '.mvm' files containing mVM ASM code into '.bin' binary files of mVM ByteCode.

CPU

Step Cycle CPU that you can set the processing speed of. The CPU consists of a few basic functions.

• Fetch

  • Get the current byte from the current RAM Address on the BUS.

• Decode

  • Read the current Byte and Parse it to be Executed.

• Execute

  • Execute the the current command.

• Program Counter

• Instruction Register

• Accumulator

• Read

• Write

• Load

BUS

• Send
• Receive
• Push
• Pop
• Load
• Clear

Data BUS

Read and write bytes from the CPU to RAM.

• Read
• Write
• Load
• Clear

Address BUS

Push and Pop the current Address for Reading and Writing byte data.

• Push
• Pop
• Peek
• Clear

RAM

Store all bytes data for the CPU to compute and store the output from the CPU.

Programming

microVM ByteCode

HEX 
00 | End Operation
01 | Load into Accumulator
02 | Store Accumulator in Address
03 | Add to Accumulator
04 | Sub from Accumulator
05 | Jump to Address
06 | Print to Console
07 | 
08 | 
09 | 
0A |
0B | 
0C | 
0D | 
0E | Number
0F | No Operation

microVM Assembly Code

END | End Operation
LOD | Load into Accumulator
STR | Store Accumulator in Address
ADD | Add to Accumulator
SUB | Sub from Accumulator
JMP | Jump to Address
PNT | Print to Console
-   |
-   |
-   |
-   |
-   |
-   |
-   |
NUM | Number
NOP | No Operation

microVM Programming Language

Sample microVM Program

Loop Counter

HEX     | ASM
------------------
01 06   | LOD 6
03 07   | ADD 7
02 06   | STR 6
05 01   | JMP 1
0f 00   | NOP 0
0f 00   | NOP 0
00 01   | NUM 1
00 01   | NUM 1