ADDS ---------------------- 0x0080 = ADD R0, R0 0x0081 = ADD R0, R1 0x0082 = ADD R0, R2 0x0083 = ADD R0, R3 0x0084 = ADD R1, R0 0x0085 = ADD R1, R1 0x

ANDS ---------------------- 0x00C0 = AND R0, R0 0x00C1 = AND R0, R1 0x00C2 = AND R0, R2 0x00C3 = AND R0, R3 0x00C4 = AND R1, R0 0x00C5 = AND R1, R1 0x

PSUEDO INSTRUCTIONS - these are composite instructions that may map to multiple opcodes

CLF (CLEAR FLAGS) ---------------------- 0x0060 CLF

CMP ---------------------- 0x00F0 = CMP R0, R0 0x00F1 = CMP R0, R1 0x00F2 = CMP R0, R2 0x00F3 = CMP R0, R3 0x00F4 = CMP R1, R0 0x00F5 = CMP R1, R1 0x0

DATA put value in memory into register (2 byte instruction) ---------------------- 0x0020 = DATA R0 0x0021 = DATA R1 0x0022 = DATA R2 0x0023 = DATA R3

PLACEHOLDER INSTRUCTIONS - these are used by the assembler

Decoder is constructed from 16 4x16 decoders https://www.quora.com/How-can-I-construct-a-8X256-decoder-using-4X16-decoders-only

[cpu] -------> display adapter --------> display RAM <--------- screen control ---------> [screenChannel] write write

Dumb peripheral that just contains a register In 'ENABLE' state: emits the values 0x00DA for data mode, and 0x00AD for address mode In SET state: sets

GlfwIO is for running the system using GLFW. libglfw3 will be required on the system

IN ---------------------- 0x0070 = IN Data, R0 0x0071 = IN Data, R1 0x0072 = IN Data, R2 0x0073 = IN Data, R3 0x0074 = IN Addr, R0 0x0075 = IN Addr, R

Instructions - useful list data structure for convienience

JR set instruction address register to value in register ---------------------- 0x0030 = JR R0 0x0031 = JR R1 0x0032 = JR R2 0x0033 = JR R3

[cpu] <-------------> keyboard adapter <----------- keyboard <----------- [keyPressChannel] read/write write no

LOADS ---------------------- arg A = memory address to load from arg B = register to store value in 0x0000 = LD R0, R0 0x0001 = LD R0, R1 0x0002 = LD

TODO not sure if this is exactly how this should look...

NOT ---------------------- 0x00B0 = NOT R0 0x00B5 = NOT R1 0x00BA = NOT R2 0x00BF = NOT R3

ORS ---------------------- 0x00D0 = OR R0, R0 0x00D1 = OR R0, R1 0x00D2 = OR R0, R2 0x00D3 = OR R0, R3 0x00D4 = OR R1, R0 0x00D5 = OR R1, R1 0x00D6 =

OUT ---------------------- 0x0078 = OUT Data, R0 0x0079 = OUT Data, R1 0x007A = OUT Data, R2 0x007B = OUT Data, R3 0x007C = OUT Addr, R0 0x007D = OUT

SHL ---------------------- 0x00A0 = SHL R0 0x00A5 = SHL R1 0x00AA = SHL R2 0x00AF = SHL R3

SHR ---------------------- 0x0090 = SHL R0 0x0095 = SHL R1 0x009A = SHL R2 0x009F = SHL R3

STORES ---------------------- arg A = memory address for value arg B = value to store in memory 0x0010 = ST R0, R0 0x0011 = ST R0, R1 0x0012 = ST R0,

XORS ---------------------- 0x00E0 = XOR R0, R0 0x00E1 = XOR R0, R1 0x00E2 = XOR R0, R2 0x00E3 = XOR R0, R3 0x00E4 = XOR R1, R0 0x00E5 = XOR R1, R1 0x

Display RAM is special as the writes (inputs) and reads (outputs) are two separate units that operate independently.