MC6800 Motorola, MC6800 Datasheet - Page 28

• Manufacturer Part Number: MC6800
• Description: 8-BIT MICROPROCESSING UNIT (MPU)
• Manufacturer: Motorola

I
Note
STS
STX
JSR
ASL
ASR
CLR
COM
~te 1.
DEC
INC
2.
and Instructions
Address Mode
Depending
For
It device
NEG
TST
LSR
ROL
ROR
TST,
which
VMA
on bus capacitance,
@
IS addressed
= O and Operand
Cycles
6
9
3
6
MOTOROLA
during
ADOR
Cycle
TABLE 9 – EXTENDED MODE CYCLE-BY-CYCLE
data
GENERAL
=
Pc
2
4
5
6
2
3
4
5
6
7
8
9
1
3
1
data
this
w
%
M
from
AODR
PROGRAM
VMA
FIGURE 31 – EXTENDED ADDRESSING
MEMORY
does
Line
DATA
INSTR
ADDR
cvcle
ADDR
MPU
RAM
the previous
> 256
not
uses VMA,
FLOW
w
Op Code
OP Code
OP Code
OP Code
Address
OP Code
Op Code
Op Code
Operand
Operand
Op Code
Op Code
Op Code
Address
Address
Address
Address
change,
“
cycle
of Operand
of Operand
of Operand
of Operand
of Operand
Destination
Destination
Address
Address
Address
Address
Address
Address
Address
Address
Address
Address
then
mav
the
ADDR
28
Semiconductor
+ 1
+ 2
+ 1
+ 2
+ 2
+ 1
+ 2
PC = 5006
ba retatned
Data
+ 1
Address
Address
= 300
5009
Bus will
R
@
EXAMPLE
PROGRAM
on the
MEMORY
LDA
go to the high
MPu
RAM
300
B
L
Data
MODE
II
I
II
I
Bus.
1
0
0
1
1
o
1
1
1
1
1
1
1
1
1
1
1
o
1
1
1
1
impedance
Products Inc.
OP Code
Address
Address
Operand
Operand
Op Code
Address
Address
3P Code
Return
Return
Irrelevant
Irrelevant
Address
Irrelevant
Op Code
OP Code
Address
Address
Current
Irrelevant
New
I
I
Op Code
Jump
Jump
Op Code
Address
Address
Operand
Op Code
Address
Address
Operand
Operand
Destination
Destination
Irrelevant
Data
Operand
from
Address
Address
Address
Address
of Subroutine
of Operand
of Operand
of Subroutine
of Subroutine
Operand
of Operand
of Operand
of Operand
of Operand
of Operand
of Operand
Data
Data
of Next
three-state
Data
Data
Data
Oata
Data
Data
Data
Oata
Accumulator
Address
Address
Data
(High
(Low
(High
(LOW
(High
( LOW Order
(Note
(Note
(Note
(Note
(Note
(Low
(High
Instruction
Data
condition,
Order
(Note
(High
(Low
Order
Order
(High
(Low
(High
(LOW
Order
(High
(Low
(High
( Low
Order
1 )
Order
1 )
1 )
Order
1 )
1 )
(High
( LOW Order
(Low
Order
Order
Order
2)
Byte)
Order
Order
Order
Order
Byte)
Order
Order
Order
BVte)
Bvte)
Bvte)
Bvte)
Bvte)
Order
BVte)
Order
Byte)
Byte)
Bvte)
Bvte)
BVte)
Bvte)
BVte)
BVte)
Bvte)
Bvte)
BVte)
Bvte)
Byte)
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