General

Opcode Format

Syntax:

CCCC IIIII Z L DDDDD SSSSSSSSSSSSSSSS

Where:

C: Condition I: Instruction Z: Size Bit L: Immediate Bit D: Destination S: Source

Detail:

• If Z = 0, instruction will only consider last 8 bits of destination and source.
• If Z = 1, instruction will consider whole 32 bits of destination and source.
• If L = 0, source will be register.
• If L = 1, source will be immediate.
• If source is register, then last 5 bits will be used.

Assembly Format

Syntax:

{cond} instr {B} src dest

Where:

• cond: condition
• instr: instruction name
• src: source register or 16 bit immediate
• dest : destination Register

Detail:

• If src is a register, L bit won't be set.
• If src is a 16 bit immediate, L bit will set.
• If the type of dest is integer, instruction will be considered as integer type.
• If the type of dest is float, instruction will be considered as float type.
• Any immediate will be considered as integer type.
• It is not recommended to use different types for src and dest. (WARNING)
• If B is used, Z bit will be set.
• If B is used, and src is immediate greater than 256, than NOP will be generated. (WARNING)

Instruction Specific

ADD

Description:

Add source and destination values

Detail:

• Carry will be stored in high bit register.

SUB

Description:

Subtract source value from destination value.

Detail:

• Carry will be stored in high bit register.

DIV

Description:

Divide destination with source value.

MUL

Description:

Multiply source and destination values.

Detail:

• If Z bit is 0 and the result is greater than 2^32-1, then the high bit will be stored in high bit register.
• If Z bit is 1 and the result is greater than 2^8-1, then the high bit will be stored in high bit register.

MOD

Description:

Modulus destination value with source value.

Detail:

• The type of this instruction will be always integer.

ASR

Description:

Arithmetic shift right by source value on destination value.

Detail:

• The type of this instruction will be always integer.

ASL

Description:

Arithmetic shift left by source value on destination value.

Detail:

• The type of this instruction will be always integer.

CMP

Description:

Subtract destination value with source value and set corresponding flag values. (It doesn't change destination value)