Instruction Set for the Slice CPU

Instruction Set for the Slice CPU

NOTE: <args> refers to a 4-Bit number, only used in the LD PC instruction, hence the Slice CPU only supports 16 lines of ROM, theoretically it could support up to 65536 lines but I wanna keep it as minimalistic as possible lol. Also, the registers are indexed 1-3, 1 being A, 2 being B and 3 being C.

Arithmetic/Logic functions:

NOP - 00000
ADD <source reg> <destination reg> - 00001
SUB <source reg> <destination reg> - 00010
AND <source reg> <destination reg> - 00011
OR <source reg> <destination reg> - 00100
XOR <source reg> <destination reg> - 00101
NAND <source reg> <destination reg> - 00101
NOR <source reg> <destination reg> - 00110
XNOR <source reg> <destination reg> - 00111

Memory Operations:

LD A (ALU) - 01000
LD B (ALU) - 01001
LD C (ALU) - 01010
LD A <args> - 01011
LD B <args> - 01100
LD C <args> - 01101
MOV <source reg> <destination reg> - 01110

Flag Controls:

JMP <args> - 01111
NEG <args> - 10000
COUT <args> - 10001
!ZR <args> - 10010
ZR <args> - 10011

Program Counter Operations:

LD PC <args>  - 10100
RST PC - 10101

Additional Operations:
HLT - 10110