Loading...
B- 2 M68040 USER’S MANUAL MOTOROLA
INSTRUCTION
FETCH
DECODE
EFFECTIVE
ADDRESS
CALCULATE
EXECUTE
EFFECTIVE
ADDRESS
FETCH
INSTRUCTION
CACHE/ACCESS/SNOOP
CONTROLLER
BUS
CONTROL
SIGNALS
DATA
BUS
ADDRESS
BUS
DATA
CACHE/ACCESS/SNOOP
CONTROLLER
OPERAND DATA BUS
INSTRUCTION DATA BUS
INSTRUCTION
CACHE
DATA
CACHE
DATA ACCESS CONTROL UNIT
INSTRUCTION ACCESS CONTROL UNIT B
U
S
C
O
N
T
R
O
L
L
E
R
INSTRUCTION
ADDRESS
DATA
ADDRESS
WRITE-BACK
INTEGER
UNIT
Figure B-1. MC68EC040 Block Diagram
With the exception of the memory management unit (MMU), the floating-point unit (FPU),
and their respective registers, the MC68EC040 programming model, data formats and
types, instruction set (except all instructions beginning with an “F”, PTEST, and PFLUSH),
and caches are the same as described in Section 1 Introduction for the MC68040.
Figures B-2 and B-3 illustrate the programming model and functional signal groups for the
MC68EC040.
Loading...
Terms of Use | Privacy Policy | DMCA Policy
2006-2020 Rsmanuals.com