TABLE OF CONTENTS Table A.1 lists the syntax for the microengine version 2 instruction set.
| Instruction type | Syntax Example | Description |
|---|---|---|
| Alu | alu[dest, a, op, b] op: +, +16, +8, +carry, -carry, -, B-A, B, ~B, AND, ~AND, AND~, OR, XOR | Perform alu operation using a, b sources, result to dest. |
| Alu Shift | alu_shf[dest, a, op, b, bshf_op] alu_shf[res, a, AND, b, < bshf_op: >>n, < < | Shift b, then perform alu operation using a, b sources, result to dest. |
| Byte field insert | ld_field[a, 1001, b] ld_field_w_clr[a, 1001, b] | Insert bytes into a from b. w_clr: clear a first |
| Branch | br[label#], opt_tok | Go to instruction after label#: Optional token defer[max 2] |
| Branch on condition | bcc[label#], opt_tok bcc: beq, bne, bmi, bpl, bcs, bhs, bcc, blo, bvs, bvc, bge, blt, bgt, ble | If condition code true, go to instruction after label#: Optional token defer[max 3] |
| Branch on bit | br_bclr[reg, bit_pos, label#] br_bset | If bit clr or set, go to label#. |
| Branch on byte | br=byte[reg, byte_pos, val, label#] br!=byte | If byte compare to value, go to label#. |
| Branch on state | br_inp_state[state_name, label#] br!_!inp_state br_signal br_!signal | If ME or signal state true, go to label#. |
| immed | immed[dest, const] immed[dest, const, shf_op] immed_b0, immed_b1, immed_b2, immed_b3, immed_w0, immed_w1 | Load a literal value. |
| Jump | jump[src, label#]opt_tok | Go to label# + GPR offset. |
| Context Swap | ctx_arb[op], opt_tok op: sig_list, voluntary, bpt, kill, -- | Thread context voluntary swap. |
| Nop | nop | No operation. |
| I/O | unit[op, xfer, a1, a2, count], tok unit: dram, sram,... |
