INSTRUCTION DESCRIPTIONS
A - 210 INSTRUCTION SET DETAILS MOTOROLA
Effective
Register W Addressing Mode M M M R R R
Read S 0 (Rn)-Nn 0 0 0 r r r
Write D 1 (Rn)+Nn 0 0 1 r r r
(Rn)- 0 1 0 r r r
(Rn)+ 0 1 1 r r r
(Rn) 1 0 0 r r r
(Rn+Nn) 1 0 1 r r r
-(Rn) 1 1 1 r r r
Absolute address 1 1 0 0 0 0
Immediate Data 1 1 0 1 0 0
where “rrr” refers to an address register R0–R7
Memory Space s S1, D1 d d d d d
X Memory 0 M0–M7 0 0 n n n
Y Memory 1 SR 1 1 0 0 1
OMR 1 1 0 1 0
SP 1 1 0 1 1
SSH 1 1 1 0 0
SSL 1 1 1 0 1
LA 1 1 1 1 0
LC 1 1 1 1 1
where “nnn” = Mn number (M0–M7)
Timing: 2+mvc oscillator clock cycles
Memory: 1+ea program words
MOVEC Move Control Register MOVEC