略記号 | 命令コード(1語目) | B'(2語目) | 命令機能の概略 | |
NOP |
0 0 0 0 0 - - -
| ⨯ | No OPeration | |
HLT |
0 0 0 0 1 - - -
| ⨯ | HaLT | 停止 |
0 1 0 1 - - - -
| ⨯ | 未使用(HLT) | ||
OUT |
0 0 0 1 0 - - -
| ⨯ | OUTput | (ACC)→OBUF |
IN |
0 0 0 1 1 - - -
| ⨯ | INput | (IBUF)→ACC |
RCF |
0 0 1 0 0 - - -
| ⨯ | Reset CF | 0→CF |
SCF |
0 0 1 0 1 - - -
| ⨯ | Set CF | 1→CF |
Bcc |
0 0 1 1 cc
| ⦾ | Branch cc | 条件が成立すればB'→PC |
Ssm |
0 1 0 0 A 0 sm
| ⨯ | Shift sm |
(A)→shift, rotate→A はみ出したビット→CF |
Rsm |
0 1 0 0 A 1 sm
| ⨯ | Rotate sm | |
LD |
0 1 1 0 A B
| ◯ | LoaD | (B)→A |
ST |
0 1 1 1 A B
| ⦾ | STore | (A)→B |
SBC |
1 0 0 0 A B
| ◯ | SuBtract with Carry | (A)-(B)-CF→A |
ADC |
1 0 0 1 A B
| ◯ | ADd with Carry | (A)+(B)+CF→A |
SUB |
1 0 1 0 A B
| ◯ | SUBtract | (A)-(B)→A |
ADD |
1 0 1 1 A B
| ◯ | ADD | (A)+(B)→A |
EOR |
1 1 0 0 A B
| ◯ | Exclusive OR | (A)⨁(B)→A |
OR |
1 1 0 1 A B
| ◯ | OR | (A)∨(B)→A |
AND |
1 1 1 0 A B
| ◯ | AND | (A)∧(B)→A |
CMP |
1 1 1 1 A B
| ◯ | CoMPare | (A)-(B) |
0
: ACC1
: IX000
: ACC001
: IX01-
: d(即値アドレス)100
: [d](絶対アドレス)101
: (d)(絶対アドレス)110
: [IX+d](インデックス修飾アドレス)111
: (IX+d)(インデックス修飾アドレス)A |
0 0 0 0
| Always |
VF |
1 0 0 0
| on oVerFlow |
NZ |
0 0 0 1
| on Not Zero |
Z |
1 0 0 1
| on Zero |
ZP |
0 0 1 0
| on Zero or Positive |
N |
1 0 1 0
| on Negative |
P |
0 0 1 1
| on Positive |
ZN |
1 0 1 1
| on Zero or Negative |
NI |
0 1 0 0
| on No Input |
NO |
1 1 0 0
| on No Output |
NC |
0 1 0 1
| on Not Carry |
C |
1 1 0 1
| on Carry |
GE |
0 1 1 0
| on Greater than or Equal |
LT |
1 1 1 0
| on Less Than |
GT |
0 1 1 1
| on Greater Than |
LE |
1 1 1 1
| on Less than or Equal |
RA |
0 0
| Right Arithmetically |
LA |
0 1
| Left Arithmetically |
RL |
1 0
| Right Logically |
LL |
1 1
| Left Logically |