Long-Word Read—16- And 32-Bit Ports - Motorola MC68020 User Manual

S0
CLK
* A31–A2
A1
A0
FC2–FC0
SIZ1
SIZ0
R/W
**
ECS
**
OCS
AS
DS
DSACK1
DSACK0
**
DBEN
D31–D24
D23–D16
D15–D8
D7–D0
*
For the MC68EC020, A23–A2.
This signal does not apply to the MC68EC020.
**
Figure 5-23. Long-Word Read—16- and 32-Bit Ports
5-30
S2 S4 S0
LONG WORD
OP0
OP1
WORD READ
LONG-WORD OPERAND READ FROM 16-BIT PORT
M68020 USER'S MANUAL
S4 S0
S2
WORD
OP2
OP3
WORD READ
S2 S4
LONG WORD
OP0
OP1
OP2
OP3
LONG-WORD READ
FROM 32-BIT PORT
MOTOROLA