Simple 8 bit computer emulator.
- 16 general purpose registers.
- 256 bytes of addressable memory.
- 31 instructions.
NOP / [] / No operation.
LDA / [ADDR] / Load value at [ADDR] into A.
LDB / [ADDR] / Load value at [ADDR] into B.
LDG / [ADDR] / Load value at [ADDR] into G.
STC / [ADDR] / Store value in C to [ADDR].
STG / [ADDR] / Store value in G to [ADDR].
CLA / [] / Clear register A.
CLB / [] / Clear register B.
CLG / [] / Clear register G.
CLF / [] / Clear register FLAGS.
EMT / [ADDR] / Emit value at [ADDR] to the output device(terminal) as a raw value.
PRT / [ADDR] / Print a value at [ADDR] to the output device(terminal) as an ASCII value.
CMP / [] / Store the resulting bool from A == B and store it in REGISTER_FLAGS.
INC / [VAL] / Increment value in A by [VAL].
DEC / [VAL] / Decrement value in A by [VAL].
LSH / [BITS] / Shift value in A to the left by [BITS] and store result in A.
RSH / [BITS] / Shift value in A to the right by [BITS] and store result in A.
ADD / [] / Add A and B together then store the result in A.
SUB / [] / Sub B from A then store the result in A.
MUL / [] / Multiply A by B then store the result in A.
DIV / [] / Divide A by B then store the result in A.
NEG / [] / Negate A and then store the result in A.
AND / [] / AND A and B together then store the result in A.
OR / [] / OR A and B together then store the result in A.
NOT / [] / NOT A then store the result in A.
NUL / [ADDR] / Set value at [ADDR] to null.
JMP / [ADDR] / Set the program counter to [ADDR].
JMR / [ADDR] / Set the program counter to current address + [ADDR].
JIN / [ADDR] / Set the program counter to [ADDR] if FLAGS is false.
JIE / [ADDR] / Set the program counter to [ADDR] if FLAGS is true.
HLT / [] / Halt the CPU.