NJU3505
s MNEMONIC LIST
Mnemonic
Operation
code
Function
TAY
04 Y←AC
Y’←AC
TYA
14 AC←Y
AC←Y’
XAX
1B AC↔X
AC↔X’
TAP
26 PH(Y’)←AC
TPA
16 AC←PH(Y’)
TAPICY
17 PH(Y’)←AC, Y←Y+1
TAPDCY
27 PH(Y’)←AC, Y←Y-1
TMA
0D AC←M(X,Y)
TAM
1D M(X,Y)←AC
TAMICY
0A M(X,Y)←AC, Y←Y+1
TAMDCY
1A M(X,Y)←AC, Y←Y-1
TMY
05 Y←M(X,Y)
Y’←M(X,Y)
XMA
0B AC↔M(X,Y)
TPMICY
03 M(X,Y)←PH(Y’), Y←Y+1
TMPICY
13 PH(Y’)←M(X,Y), Y←Y+1
TRM
23 M(X,Y)←ROM(PHY13,X’,AC)
CLA
LDI A,#K
LDI Y,#K
LDI X,#K
ADD A,M
INC A
DEC A
ADD A,#K
AND A,M
CMP A,M
CMP Y,#K
INC Y
DEC Y
INC M
DEC M
YNEA
OR A,M
XOR A,M
NEG
SUB A,M
AND A,#K
OR A,#K
80
80−8F
90−9F
A0−AF
0E
71
7F
70−7F
0F
2E
B0−BF
08
18
09
19
01
1F
2F
2D
1E
40−4F
50−5F
AC←0
AC←#K
Y←#K
Y’←#K
X←#K
X’←#K
AC←AC+M(X,Y)
AC←AC+1
AC←AC-1
AC←AC+#K
AC←AC∧M(X,Y)
AC< >M(X,Y)
Y< >#K
Y←Y+1
Y’←Y’+1
Y←Y-1
Y’←Y’-1
AC←M(X,Y)+1
AC←M(X,Y)-1
Y< >AC
AC←AC∨M(X,Y)
AC←AC⊕M(X,Y)
AC←0-AC
AC←M(X,Y)-AC
AC←AC∧#K
AC←AC∨#K
Status Cycle
Memo
1
1 RPC=0
1
1 RPC=1
1
1 RPC=0
1
1 RPC=1
1
1 RPC=0
1
1 RPC=1
1
1
1
1
∗
1
∗
1
1
1
1
1
∗
1
∗
1
1
1 RPC=0
1
1 RPC=1
1
1
∗
1
∗
1
1
2 Y = an even number : ROM of 4bit low-data
Y = an odd number : ROM of 4bit hi-data
1
1
1
1 #K=0−15
1
1 RPC=0, #K=0−15
1
1 RPC=1, #K=0−15
1
1 RPC=0, #K=0−15
1
1 RPC=1, #K=0−15
∗
1
∗
1
∗
1
∗
1 #K=0−15
∗
1
∗
1
∗
1 #K=0−15
∗
1 RPC=0
∗
1 RPC=1
∗
1 RPC=0
∗
1 RPC=1
∗
1
∗
1
∗
1
∗
1
∗
1
1
1
∗
1
∗
1 #K=0−15
∗
1 #K=0−15
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