Form 1 Instruction Microcode
----------------------------

name   - instruction name
code   - form 1 opcode value
wA?    - writes to register A?
wB?    - writes to register B?
rA?    - reads register A?
rB?    - reads register B?
wm?    - writes to memory?
rm?    - reads from memory?
notes  - misc. comments

|--------+----------+-----+-----+-----+-----+-----+-----+-------|
| name   |     code | wA? | wB? | rA? | rB? | wm? | rm? | notes |
|--------+----------+-----+-----+-----+-----+-----+-----+-------|
| nop    | 00000000 |   0 |   0 |   0 |   0 |   0 |   0 |       |
| ldi.l  | 00000001 |   1 |   0 |   0 |   0 |   0 |   1 |       |
| mov    | 00000010 |   1 |   0 |   0 |   1 |   0 |   0 |       |
| jsra   | 00000011 |   0 |   0 |   0 |   0 |   0 |   0 |       |
| ret    | 00000100 |   0 |   0 |   0 |   0 |   0 |   0 |       |
| add.l  | 00000101 |   1 |   0 |   1 |   1 |   0 |   0 |       |
| push   | 00000110 |   1 |   0 |   0 |   0 |   1 |   0 |       |
| pop    | 00000111 |   1 |   1 |   1 |   0 |   0 |   1 |       |
| lda.l  | 00001000 |   1 |   0 |   0 |   0 |   0 |   1 |       |
| sta.l  | 00001001 |   0 |   0 |   1 |   0 |   1 |   0 |       |
| ld.l   | 00001010 |   1 |   0 |   1 |   0 |   0 |   1 |       |
| st.l   | 00001011 |   0 |   0 |   1 |   0 |   1 |   0 |       |
| ldo.l  | 00001100 |   1 |   0 |   1 |   1 |   0 |   1 |       |
| sto.l  | 00001101 |   0 |   0 |   1 |   1 |   1 |   0 |       |
| cmp    | 00001110 |   0 |   0 |   1 |   1 |   0 |   0 |       |
| jsr    | 00011001 |   0 |   0 |   1 |   0 |   0 |   0 |       |
| jmpa   | 00011010 |   0 |   0 |   0 |   0 |   0 |   0 |       |
| ldi.b  | 00011011 |   1 |   0 |   0 |   0 |   0 |   0 |       |
| ld.b   | 00011100 |   1 |   0 |   1 |   0 |   0 |   1 |       |
| lda.b  | 00011101 |   1 |   0 |   0 |   0 |   0 |   1 |       |
| st.b   | 00011110 |   0 |   0 |   1 |   1 |   1 |   0 |       |
| sta.b  | 00011111 |   0 |   0 |   1 |   0 |   1 |   0 |       |
| ldi.s  | 00100000 |   1 |   0 |   0 |   0 |   0 |   0 |       |
| ld.s   | 00100001 |   1 |   0 |   1 |   0 |   0 |   1 |       |
| lda.s  | 00100010 |   1 |   0 |   1 |   0 |   0 |   1 |       |
| st.s   | 00100011 |   0 |   0 |   1 |   1 |   1 |   0 |       |
| sta.s  | 00100100 |   0 |   0 |   1 |   0 |   1 |   0 |       |
| jmp    | 00100101 |   0 |   0 |   0 |   0 |   0 |   0 |       |
| and    | 00100110 |   1 |   0 |   1 |   1 |   0 |   0 |       |
| lshr   | 00100111 |   1 |   0 |   1 |   1 |   0 |   0 |       |
| ashr   | 00101000 |   1 |   0 |   1 |   1 |   0 |   0 |       |
| sub.l  | 00101001 |   1 |   0 |   1 |   1 |   0 |   0 |       |
| neg    | 00101010 |   1 |   0 |   1 |   1 |   0 |   0 |       |
| or     | 00101011 |   1 |   0 |   1 |   1 |   0 |   0 |       |
| not    | 00101100 |   1 |   0 |   1 |   1 |   0 |   0 |       |
| ashr   | 00101101 |   1 |   0 |   1 |   1 |   0 |   0 |       |
| xor    | 00101110 |   1 |   0 |   1 |   1 |   0 |   0 |       |
| mul.l  | 00101111 |   1 |   0 |   1 |   1 |   0 |   0 |       |
| swi    | 00110000 |   0 |   0 |   0 |   0 |   0 |   0 |       |
| div.l  | 00110001 |   1 |   0 |   1 |   1 |   0 |   0 |       |
| udiv.l | 00110010 |   1 |   0 |   1 |   1 |   0 |   0 |       |
| mod.l  | 00110011 |   1 |   0 |   1 |   1 |   0 |   0 |       |
| umod.l | 00110100 |   1 |   0 |   1 |   1 |   0 |   0 |       |
| brk    | 00110101 |   0 |   0 |   0 |   0 |   0 |   0 |       |
| ldo.b  | 00110110 |   1 |   0 |   1 |   1 |   0 |   1 |       |
| sto.b  | 00110111 |   0 |   0 |   1 |   1 |   1 |   0 |       |
| ldo.s  | 00111000 |   1 |   0 |   1 |   1 |   0 |   1 |       |
| sto.s  | 00111001 |   0 |   0 |   0 |   0 |   1 |   0 |       |
|--------+----------+-----+-----+-----+-----+-----+-----+-------|