Instruction Set
INSTRUCTION SET
(Continued)
ADD
ADC
A,Meml
A,Meml
ADD
ADD with Carry
A ← A + Meml
A ← A + Meml + C, C ← Carry
HC ← Half Carry
SUBC
A,Meml
Subtract with Carry
A ← A ? MemI + C, C ← Carry
HC ← Half Carry
AND
ANDSZ
OR
XOR
IFEQ
IFEQ
IFNE
IFGT
IFBNE
DRSZ
SBIT
RBIT
IFBIT
RPND
X
X
LD
LD
LD
LD
LD
X
X
LD
LD
LD
CLR
INC
DEC
LAID
DCOR
RRC
RLC
SWAP
SC
RC
IFC
IFNC
POP
PUSH
VIS
JMPL
JMP
JP
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A,Meml
A,Imm
A,Meml
A,Meml
MD,Imm
A,Meml
A,Meml
A,Meml
#
Reg
#,Mem
#,Mem
#,Mem
A,Mem
A,[X]
A,Meml
A,[X]
B,Imm
Mem,Imm
Reg,Imm
A, [B ± ]
A, [X ± ]
A, [B ± ]
A, [X ± ]
[B ± ],Imm
A
A
A
A
A
A
A
A
A
Addr.
Addr.
Disp.
Logical AND
Logical AND Immed., Skip if Zero
Logical OR
Logical EXclusive OR
IF EQual
IF EQual
IF Not Equal
IF Greater Than
If B Not Equal
Decrement Reg., Skip if Zero
Set BIT
Reset BIT
IF BIT
Reset PeNDing Flag
EXchange A with Memory
EXchange A with Memory [X]
LoaD A with Memory
LoaD A with Memory [X]
LoaD B with Immed.
LoaD Memory Immed
LoaD Register Memory Immed.
EXchange A with Memory [B]
EXchange A with Memory [X]
LoaD A with Memory [B]
LoaD A with Memory [X]
LoaD Memory [B] Immed.
CLeaR A
INCrement A
DECrement A
Load A InDirect from ROM
Decimal CORrect A
Rotate A Right thru C
Rotate A Left thru C
SWAP nibbles of A
Set C
Reset C
IF C
IF Not C
POP the stack into A
PUSH A onto the stack
Vector to Interrupt Service Routine
Jump absolute Long
Jump absolute
Jump relative short
44
A ← A and Meml
Skip next if (A and Imm) = 0
A ← A or Meml
A ← A xor Meml
Compare MD and Imm, Do next if MD = Imm
Compare A and Meml, Do next if A = Meml
Compare A and Meml, Do next if A ≠ Meml
Compare A and Meml, Do next if A > Meml
Do next if lower 4 bits of B ≠ Imm
Reg ← Reg ? 1, Skip if Reg = 0
1 to bit, Mem (bit = 0 to 7 immediate)
0 to bit, Mem
If bit in A or Mem is true do next instruction
Reset Software Interrupt Pending Flag
A ? Mem
A ? [X]
A ← Meml
A ← [X]
B ← Imm
Mem ← Imm
Reg ← Imm
A ? [B], (B ← B ± 1)
A ? [X], (X ← X ± 1)
A ← [B], (B ← B ± 1)
A ← [X], (X ← X ± 1)
[B] ← Imm, (B ← B ± 1)
A ← 0
A ← A + 1
A ← A ? 1
A ← ROM (PU,A)
A ← BCD correction of A (follows ADC, SUBC)
C → A7 → … → A0 → C
C ← A7 ← … ← A0 ← C
A7…A4 ? A3…A0
C ← 1, HC ← 1
C ← 0, HC ← 0
IF C is true, do next instruction
If C is not true, do next instruction
SP ← SP + 1, A ← [SP]
[SP] ← A, SP ← SP ? 1
PU ← [VU], PL ← [VL]
PC ← ii (ii = 15 bits, 0 to 32k)
PC9…0 ← i (i = 12 bits)
PC ← PC + r (r is ?31 to +32, except 1)
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