16 bit js virtual machine implementation

Virtual CPU use:

• RAM memory (memory size can be changed). Flat model, 0x0000 - 0xFFFF (Up to 64Kb).
• Internal registers memory (access only via registers).

Flash memory now not used.

Actual information can be found here.

• IP - Instruction pointer. Register value contains memory address of next command for executing.
• AC - Accumulator.
• SP - Stack pointer. Register value contains memory address of stack head.
• Rx - some of general purpose registers.

After CPU start IP register contain 0x0000 address, fetch instruction from RAM and start executing.

After CPU start SP register contain RAM memory size - 2 address. After push some data SP value decreased by 2 bytes and after pop - increased by 2 bytes.

Actual information can be found here.