Instructions

All instructions and arguments are byte aligned and packed sequentially into bytes.

Misc

NOP

Takes no arguments, and does nothing for 1 cycle.

Arithmetic

ADD

Adds the 8-bit values at addresses a and b together, storing the result at result.

MemoryAddress a
MemoryAddress b
MemoryAddress result

ADD_W

Adds the 16-bit values at addresses a and b together, storing the result at result.

MemoryAddress a
MemoryAddress b
MemoryAddress result

SUB

Subtracts the 8-bit value at address a from the value at b, storing the result at result.

MemoryAddress a
MemoryAddress b
MemoryAddress result

SUB_W

Subtracts the 16-bit value at address a from the value at b, storing the result at result.

MemoryAddress a
MemoryAddress b
MemoryAddress result

MUL

Multiplies the 8-bit values at addresses a and b together, storing the result at result.

MemoryAddress a
MemoryAddress b
MemoryAddress result

MUL_W

Multiplies the 16-bit values at addresses a and b together, storing the result at result.

MemoryAddress a
MemoryAddress b
MemoryAddress result

DIV

Divides the 8-bit value at address a by the value at b, storing the result at result.

MemoryAddress a
MemoryAddress b
MemoryAddress result

DIV_W

Divides the 16-bit value at address a by the value at b, storing the result at result.

MemoryAddress a
MemoryAddress b
MemoryAddress result

Bitwise Logic

NOT

Bitwise inversion of 8-bit value stored at in, storing the result at result.

MemoryAddress in
MemoryAddress result

LSHIFT

Bitwise-left-shift of 8-bit value stored at in by the number of bits stored at bits, storing the result at result.

MemoryAddress in
MemoryAddress bits
MemoryAddress result

RSHIFT

Bitwise-right-shift of 8-bit value stored at in by the number of bits stored at bits, storing the result at result.

MemoryAddress in
MemoryAddress bits
MemoryAddress result

AND

Bitwise logical AND of 8-bit values stored at a and b, storing the result at result.

MemoryAddress a
MemoryAddress b
MemoryAddress result

OR

Bitwise logical OR of 8-bit values stored at a and b, storing the result at result.

MemoryAddress a
MemoryAddress b
MemoryAddress result

XOR

Bitwise logical exclusive OR of 8-bit values stored at a and b, storing the result at result.

MemoryAddress a
MemoryAddress b
MemoryAddress result

Branching

JUMP_V

Sets the next instruction register equal to addr.

MemoryAddress addr

JUMP

Sets the next instruction register equal to the 16-bit address stored at addr_p.

MemoryAddress addr_p

Comparison

CJUMP

Compares the 8-bit value stored at a to the value at b, is a is greater, set the next instruction register equal to addr.

MemoryAddress a
MemoryAddress b
MemoryAddress addr

CJUMP_W

Compares the 16-bit value stored at a to the value at b, is a is greater, set the next instruction register equal to addr.

MemoryAddress a
MemoryAddress b
MemoryAddress addr

CMP

Compares the 8-bit value stored at a to the value at b, is they are equal, set the 8-bit value at result to 0x01, otherwise 0x00.

MemoryAddress a
MemoryAddress b
MemoryAddress result

CMP_W

Compares the 16-bit value stored at a to the value at b, is they are equal, set the 8-bit value at result to 0x01, otherwise 0x00.

MemoryAddress a
MemoryAddress b
MemoryAddress result

Data

SET_V

Sets the 8-bit value at addr equal to value.

MemoryAddress addr
u8 value

SET_VW

Sets the 16-bit value at addr equal to value.

MemoryAddress addr
u16 value

COPY

Copies the 8-bit value at the address from to the value at to.

MemoryAddress from
MemoryAddress to

COPY_W

Copies the 16-bit value at the address from to the value at to.

MemoryAddress from
MemoryAddress to

GET

Copies the 8-bit value at the address stored at from_p to the address to

MemoryAddress from_p
MemoryAddress to

GET_W

Copies the 16-bit value at the address stored at from_p to the address to

MemoryAddress from_p
MemoryAddress to

SET

Copies the 8-bit value at the address from to the address stored at to_p

MemoryAddress from
MemoryAddress to_p

SET_W

Copies the 16-bit value at the address from to the address stored at to_p

MemoryAddress from
MemoryAddress to_p