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Tiny virtual machine for math calculations
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mandriota/impvm
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| Name | Name | Last commit message | Last commit date | |
|---|---|---|---|---|
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By Mark Mandriota
| organization method | kind size |
|---|---|
| static stack | 64-bit |
| CODE | LOOPF | LF | EF | GF |
|---|---|---|---|---|
| 4-bit | 1-bit | 1-bit | 1-bit | 1-bit |
(total size: 8-bit)
| code | name | arg stack | ret stack | synopsis |
|---|---|---|---|---|
| 0x0 | REDO | mm | mm; mm | duplicate last |
| 0x1 | UNDO | mm | delete last | |
| 0x2 | HROT | mm; mm | mm; mm | rotate stack up-down |
| 0x3 | TROT | mm; mm | mm; mm | rotate stack down-up |
| 0x4 | SWAP | mm; mm | mm; mm | exchange 2 elements |
| 0x5 | JUMP | mm | jump to code position | |
| 0x6 | TEST | mm | compare values | |
| 0x7 | IPUT | mm | get in data | |
| 0x8 | OPUT | mm | put out data | |
| 0x9 | LINC | mm; mm | mm | x+y |
| 0xA | LDEC | mm; mm | mm | x-y |
| 0xB | QINC | mm; mm | mm | x=x+k |
| 0xC | QDEC | mm; mm | mm | x=x-k |
| 0xD | ||||
| 0xE | ||||
| 0xF |
If flag is setted, then popsN from the stack andrepeats instruction whilecondf≠0 and k<N
| code | name | combination | synopsis |
|---|---|---|---|
| 0b100 | LF | LF | x<y (lower) |
| 0b011 | NLF | GF;EF | x≥y (not lower) |
| 0b010 | EF | EF | x=y (equal) |
| 0b101 | NEF | LF;GF | x≠y (not equal) |
| 0b001 | GF | GF | x>y (greater) |
| 0b110 | NGF | LF;EF | x≤y (not greater) |
| 0b111 | AF | LF;GF;EF | 1 (always) |
| 0b000 | AF | 1 (always) |