VM18 Instructions

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VM-18 Instruction Set

Format “INSTRUCTION [𝐚𝐫𝐠 𝟏 ] [𝐚𝐫𝐠 𝟐 ] … [𝐚𝐫𝐠 𝒏 ]”
where [arg 𝑖 ] is pushed onto the stack before [arg 𝑖+1] and [arg 𝑖 ]
represents a single byte.

opcode: 0x01
PUSH_BYTE [byte]
Pushes next byte found in the instruction stream onto the stack

opcode: 0x02
HALT
Stops execution of instruction stream

opcode: 0x03
ADD_BYTE [𝐍𝐮𝐦𝐛𝐞𝐫𝟏 ] [𝐍𝐮𝐦𝐛𝐞𝐫𝟐 ]
Pushes the result of Number1 + Number2 onto stack

opcode: 0x04
SUB_BYTE [𝐍𝐮𝐦𝐛𝐞𝐫𝟏 ] [𝐍𝐮𝐦𝐛𝐞𝐫𝟐 ]
Pushes the result of Number1 - Number2 onto stack

opcode: 0x05
MUL_BYTE [𝐍𝐮𝐦𝐛𝐞𝐫𝟏 ] [𝐍𝐮𝐦𝐛𝐞𝐫𝟐 ]
Pushes the result of Number1 ∙ Number2 onto stack

opcode: 0x06
DIV_BYTE [𝐍𝐮𝐦𝐛𝐞𝐫𝟏 ] [𝐍𝐮𝐦𝐛𝐞𝐫𝟐 ]
Pushes the result of Number1 ÷ Number2 onto stack

opcode: 0x07
MOD_BYTE [𝐍𝐮𝐦𝐛𝐞𝐫𝟏 ] [𝐍𝐮𝐦𝐛𝐞𝐫𝟐 ]
Pushes the result of Number1 modulo Number2 onto stack

opcode: 0x08
LOAD_BYTE [𝐀𝐃𝐃𝐑𝐄𝐒𝐒𝟏 ] [𝐀𝐃𝐃𝐑𝐄𝐒𝐒𝟐 ] … [𝐀𝐃𝐃𝐑𝐄𝐒𝐒𝒏 ]
Fetches byte stored at address, ADDRESS1 being MSB, and pushes onto
stack. Address size is determined by the VM implementation.

opcode: 0x09
STORE_BYTE [BYTE] [𝐀𝐃𝐃𝐑𝐄𝐒𝐒𝟏 ] [𝐀𝐃𝐃𝐑𝐄𝐒𝐒𝟐 ] … [𝐀𝐃𝐃𝐑𝐄𝐒𝐒𝒏 ]
Stores byte at address, ADDRESS1 being MSB. Address size is determined
by the VM implementation.

opcode: 0x0A
SEND_INTERFACE [I] [𝐀 𝟏 ] [𝐀 𝟐 ] … [𝐀 𝒏 ] [𝐍𝟏 ] [𝐍𝟐 ] … [𝐍𝒏 ]
Sends N bytes starting at address A to interface number I. A1 and N1
are the MSBs, and 𝑛 is the number of bytes in the implementation’s
memory address.

opcode: 0x0B

RECV_INTERFACE [I] [𝐀 𝟏 ] [𝐀 𝟐 ] … [𝐀 𝒏 ] [𝐍𝟏 ] [𝐍𝟐 ] … [𝐍𝒏 ]
Receives N bytes to address A from interface number I. A1 and N1 are
the MSBs, and 𝑛 is the number of bytes in the implementation’s memory
address.

opcode: 0x0C
AND_BYTE [𝐍𝐮𝐦𝐛𝐞𝐫𝟏 ] [𝐍𝐮𝐦𝐛𝐞𝐫𝟐 ]
Pushes result of performing the bitwise AND on Number1 and Number2 .

opcode: 0x0D
OR_BYTE [𝐍𝐮𝐦𝐛𝐞𝐫𝟏 ] [𝐍𝐮𝐦𝐛𝐞𝐫𝟐 ]
Pushes result of performing the bitwise OR on Number1 and Number2 .

opcode: 0x0E
NOT_BYTE [𝐍𝐮𝐦𝐛𝐞𝐫]
Pushes result of performing the bitwise NOT on Number.

opcode: 0x0F
XOR_BYTE [𝐍𝐮𝐦𝐛𝐞𝐫𝟏 ] [𝐍𝐮𝐦𝐛𝐞𝐫𝟐 ]
Pushes result of performing the bitwise XOR on Number1 and Number2 .

opcode: 0x10
JUMPG [𝐍𝐮𝐦𝐛𝐞𝐫𝟏 ] [𝐍𝐮𝐦𝐛𝐞𝐫𝟐 ] [𝐈𝟏 ] [𝐈𝟐 ] … [𝐈𝒏 ]
If Number1 > Number2 , move instruction pointer to instruction address
specified by I𝑖 where 𝑛 is the implementation’s address size.

opcode: 0x11
JUMPE [𝐍𝐮𝐦𝐛𝐞𝐫𝟏 ] [𝐍𝐮𝐦𝐛𝐞𝐫𝟐 ] [𝐈𝟏 ] [𝐈𝟐 ] … [𝐈𝒏 ]

If Number1 == Number2 , move instruction pointer to instruction address
specified by I𝑖 where 𝑛 is the implementation’s address size.

opcode: 0x12
JUMPL [𝐍𝐮𝐦𝐛𝐞𝐫𝟏 ] [𝐍𝐮𝐦𝐛𝐞𝐫𝟐 ] [𝐈𝟏 ] [𝐈𝟐 ] … [𝐈𝒏 ]
If Number1 < Number2 , move instruction pointer to instruction address
specified by I𝑖 where 𝑛 is the implementation’s address size.

opcode: 0x13
JUMPNE [𝐍𝐮𝐦𝐛𝐞𝐫𝟏 ] [𝐍𝐮𝐦𝐛𝐞𝐫𝟐 ] [𝐈𝟏 ] [𝐈𝟐 ] … [𝐈𝒏 ]
If Number1 != Number2 , move instruction pointer to instruction address
specified by I𝑖 where 𝑛 is the implementation’s address size.

opcode: 0x14
JUMPLE [𝐍𝐮𝐦𝐛𝐞𝐫𝟏 ] [𝐍𝐮𝐦𝐛𝐞𝐫𝟐 ] [𝐈𝟏 ] [𝐈𝟐 ] … [𝐈𝒏 ]
If Number1 <= Number2 , move instruction pointer to instruction address
specified by I𝑖 where 𝑛 is the implementation’s address size.

opcode: 0x15
JUMPGE [𝐍𝐮𝐦𝐛𝐞𝐫𝟏 ] [𝐍𝐮𝐦𝐛𝐞𝐫𝟐 ] [𝐈𝟏 ] [𝐈𝟐 ] … [𝐈𝒏 ]
If Number1 >= Number2 , move instruction pointer to instruction address
specified by I𝑖 where 𝑛 is the implementation’s address size.

opcode: 0x16
JUMP [𝐈𝟏 ] [𝐈𝟐 ] … [𝐈𝒏 ]
Move instruction pointer to instruction address specified by I𝑖 where 𝑛
is the implementation’s address size.



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Creator                         : PooPooPeePee
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Create Date                     : 2018:06:08 15:07:52-04:00
Modify Date                     : 2018:06:08 15:07:52-04:00
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Author                          : PooPooPeePee

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