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Create a simple video device

Each program have its own video space or screen(as you want)

Instruction:
put_pixel(x, y, value)
read_pixel(x, y)
write_char(x, y, value)

Write a simple audio device that play audio from memory address

load_sound(channel, memAddr, size)
load_music(channel, memAddr, size)
play_music(channel)
play_sound(channel)
pause_sound(channel)
pause_music(channel)
stop_music(channel)
stop_sound(channel)
unload_sound(channel)
unload_music(channel)

Create a parser for the language of the virtual machine.

Syntax is :

For instruction :
instruction(param1, param2, ..., paramN)

For parameter:

Two type of parameter: Value and instruction
like : instruction(instruction1(param), Int8:42, 42)

For value:

Type_specifier:value
if no type specifier is available deduce them like (42.1 -> Double, 42 -> Int32)

We can have label that you need to translate into index(index are absolute not relative)
Example:

toto:
instruction_1(param1)

bla:
jump("toto") // Transformed to jump(0)

Write a simple memory device.

Instruction required:

mem_read(adress, sizeToRead)
mem_write(adress, value)
mem_get_size()

The memory should be divided into multiple part to avoid collision between programs

Each program have its own memory zone.

Write simple cpu

CPU must have 16 register for each program and 16 floating point register for each program

Instruction:
scpu_reg_read(index) // Return 64 bit integer value
scpu_fpreg_read(index) // Return a double value
scpu_reg_write(index, value)
scpu_fpreg_write(index, value)
scpu_add(value1, value2)
scpu_sub(value1, value2)
scpu_mul(value1, value2)
scpu_mod(value1, value2)
scpu_or(value1, value2)
scpu_xor(value1, value2)
scpu_and(value1, value2)
scpu_leftshift(value1, value2)
scpu_rightshift(value1, value2)