MC68030 Datasheet, PDF (181/602 Pages) Motorola, Inc – ENHANCED 32-BIT MICROPROCESSOR

Bus Operation
CLK
A31-A2
S0
S2
S4
S0
S2
S4
S0
S2
S4
S0
S2
S4
A1
A0
FC2-FC0
SIZ1
SIZ0
R/W
ECS
OCS
AS
DS
CIOUT
DSACK1
DSACK0
LONG WORD
3-BYTE
WORD
BYTE
DBEN
D31-D24
OP0
OP1
OP2
OP3
D23-D16
D15-D8
D7-D0
BYTE READ
BYTE READ
BYTE READ
BYTE READ
LONG WORD OPERAND READ FROM 8-BIT PORT
Figure 7-22. Long-Word Read — 8-Bit Port with CIOUT Asserted
MOTOROLA
MC68030 USER’S MANUAL
7-35