0000 XXXX
instruction sur 2 quartets
instruction suivant la valeur de X
0000b =>RTNSXM
0001b =>RTN
0010b =>RTNSC
0011b =>RTNCC
0100b =>SETHEX
0101b =>SETDEC
0110b =>RSTK=C
0111b =>C=RSTK
1000 =>CLRST
1001b =>C=ST
1010b =>ST=C
1011b =>CSTEX
1100b =>P=P+1
1101b =>P=P-1
0000 1110
instructions sur 4 quartets du type:
0000 1110 XYYY ZZZZ
R=R(& ou !)R'
ZZZZ:champ d'application
0000 =>P
0001 =>WP
0010 =>XS
0011 =>X
0100 =>S
0101 =>M
0110 =>B
0111 =>W
1000 =>"NA"
1001 =>"NA"
1010 =>"NA"
1011 =>"NA"
1100 =>"NA"
1101 =>"NA"
1110 =>"NA"
1111 =>A
X:type d'instruction
0=!(ou logique)
1=&(et logique)
YYY:registres concernés
000 => A&B
001 => B&C
010 => C&A
011 => D&C
100 => B&A
101 => C&B
110 => A&C
111 => C&D