#Overview
All instructions are 16-bit wide.
- Bits 15, 14, 13 - define instruction class
- Bit 12 - Signed bit
- Bits 11-0 - contain least 12bit of signed integer. Master 4 bits generates automatically: 0 for positive and 1 for negative values.
| Instruction | Opcode | Operation | Brainfuck Equivalent | Description |
|---|---|---|---|---|
| add m16 | 0X XX | *AP ← *AP + m16 | '+' (Repeat m16 times) | Add base to current data value |
| sub m16 | 1X XX | *AP ← *AP - m16 | '-' (Repeat m16 times) | Substract base from current data value |
| ada m16 | 2X XX | AP ← AP + m16 | '>' (Repeat m16 times) | Increase memory address |
| ads m16 | 3X XX | AP ← AP - m16 | '<' (Repeat m16 times) | Decrease memory address |
| jz m16 | 4X XX | (*AP == 0)? IP ← IP + m16 : IP ← IP | '[' | Jump to IP + m16 if current data value is zero |
| jz m16 | 5X XX | (*AP == 0)? IP ← IP - m16 : IP ← IP | None | Jump to IP - m16 if current data value is zero |
| jnz m16 | 6X XX | (*AP != 0)? IP ← IP + m16 : IP ← IP | None | Jump to IP + m16 if current data value is not zero |
| jnz m16 | 7X XX | (*AP != 0)? IP ← IP - m16 : IP ← IP | ']' | Jump to IP - m16 if current data value is not zero |
| and m16 | 8X XX | *AP ← *AP AND m16 | None | Logical AND of current data value with positive constant |
| and m16 | 9X XX | *AP ← *AP AND m16 | None | Logical AND of current data value with negative constant |
| or m16 | aX XX | *AP ← *AP OR m16 | None | Logical OR of current data value with positive constant |
| or m16 | bX XX | *AP ← *AP OR m16 | None | Logical OR of current data value with negative constant |
| in | c0 00 | *AP ← CIN | ',' | Read one m8 symbol from console. If Cin buffer is empty, wait it |
| out | c0 01 | COUT ← *AP | '.' | Write m8 symbol to console |
| clr.ap | d0 01 | AP ← 0 | None | Clear AP register. Can be combined with other clr commands |
| clr.ip | d0 02 | IP ← 0 | None | Clear IP register. Can be combined with other clr commands |
| clr.dp | d0 04 | *AP ← 0 | '[+]' or '[-]' | Clear current data cell. Can be combined with other clr commands |
| set.ap | d0 10 | AP ← *AP | None | Write current data value to AP register |
| set.ip | d0 20 | IP ← *AP | None | Write current data value to IP register |
| get.ap | d1 00 | *AP ← AP | None | Read current data value from AP register |
| get.ip | d2 00 | *AP ← IP | None | Read current data value from IP register |
| mode.b8 | e1 00 | None | 8-bit mode activated(1) | |
| mode.b16 | e2 00 | None | 16-bit mode activated | |
| halt | f0 00 | None | halt machine |
- AP - Address pointer Register
- IP - Instruction pointer register
- *AP - Current Data cell
- CIN - Console input
- COUT - console output
- When 8-bit mode activated all arithimetic operations continue to perform in 16-bit mode. But JZ and JNZ branches start depends on only least data byte - (DP & 0x00FF == 0)? and (DP & 0x00FF != 0)? Console Input and Output are always read and write only least byte of 16-bit Word.