TIS-100
Tessellated Intelligence System
System details
Massively parallel computer architecture comprised of non-uniformly interconnected heterogeneous nodes
Node Type T21 - Basic Execution Node
- After executing the last instruction of the program, execution automatically continues to the first instruction.
- All registers store integer values between -999 and 999 (inclusive).
- Comments start with #, text after ## is used as the title of the program.
- Labels are used for jump instructions.
TIS-100 Registers
| Register | Notes |
|---|---|
| ACC | Accumulator register. |
| BAK | Non-addressible temporary storage for values in ACC. |
TIS-100 Ports
| Port | Notes |
|---|---|
| LEFT, RIGHT, UP, DOWN | Communication register for topologically adjacent nodes. Blocks indefinitely if used until transaction with other node occurs. |
| ANY | Reads or writes a value that becomes available on ANY port. (TODO - deterministic which node reads ANY value first?) |
| LAST | Refers to the port last read or written using the ANY pseudo-port. |
TIS-100 Instructions
| Instruction | Description |
|---|---|
| NOP | pseudo-intruction converted to ADD NIL. |
| MOV <SRC>, <DST> | SRC is read and written to DST. |
| SWP | Exchange ACC and BAK. |
| SAV | Write ACC to BAK. |
| ADD <SRC> | Add SRC to ACC, store result in ACC. (TODO - overflow behaviour?) |
| SUB <SRC> | Subtract SRC from ACC, store result in ACC. (TODO - underflow behaviour?) |
| NEG | The value of ACC is arithmetically negated. Zero remains the same. |
| JMP <LABEL> | Transfer execution to instruction after LABEL. |
| JEZ <LABEL> | Transfer execution to instruction after LABEL if value of ACC is zero. |
| JNZ <LABEL> | Transfer execution to instruction after LABEL if value of ACC is not zero. |
| JGZ <LABEL> | Transfer execution to instruction after LABEL if value of ACC is greater than zero. |
| JLZ <LABEL> | Transfer execution to instruction after LABEL if value of ACC is less than zero. |
| JRO <SRC> | Transfer execution to instruction at offset specified by SRC relative to current instruction. |
| HCF | Halt and Catch Fire (undocumented) |