Here is the complete list of CSC-1 instructions along with their opcodes and formats and assembler mnemonics, (pronounced nee-MAHN-niks) which are short names of 2 or 3 characters used in writing assembler programs.

opcode mnemonic        format                   meaning
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0000      LOD     0000xxxxxxxxxxxx   Load memory word xx... into A
0001      STD     0001xxxxxxxxxxxx   Store A into memory xx...
0010      LDI     0010kkkkkkkkkkkk   Load constant kk... into A
0011      ADD     0011xxxxxxxxxxxx   Add memory word xx... to A
0100      SUB     0100xxxxxxxxxxxx   Subtract memory word xx...from A
0101      AND     0101xxxxxxxxxxxx   Boolean bitwise AND of memory with A
0110      OR      0110xxxxxxxxxxxx   Boolean bitwise OR of memory with A
0111      NOT     0111xxxxxxxxxxxx   Boolean bitwise NOT of memory
1000      JMP     1000xxxxxxxxxxxx   Jump to address xx... unconditionally
1001      JZ      1001xxxxxxxxxxxx   Jump to address xx... if Z=1
1010      JC      1010xxxxxxxxxxxx   Jump to address xx... if C=1
1011      JV      1011xxxxxxxxxxxx   Jump to address xx... if V=1
1100      JN      1100xxxxxxxxxxxx   Jump to address xx... if N=1
1101      JP      1101xxxxxxxxxxxx   Jump to address xx... if N=0 and Z=0
1110      CAL     1110xxxxxxxxxxxx   Call subroutine xx...
11110001  RET     1111000100000000   Return from subroutine
11110010  A2S     1111001000000000   Copy A into S
11110011  S2A     1111001100000000   Copy S into A
11110100  SHL     1111010000000000   Shift Left 1 bit (logical shift)
11110101  SHR     1111010100000000   Shift Right 1 bit (logical shift)
11110110  LDS     1111011000000000   Load A via S (indirect load)
11110111  STS     1111011100000000   Store A via S (indirect store)
11111000  NOP     1111100000000000   No Operation (waste cycle)
11111001  HLT     1111100100000000   Halt the computer