MC6800 Motorola, MC6800 Datasheet - Page 19

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

Pc —
SP-m–2
@
m+l
m—1
n+l
nt2
nt3
m
n
s“
MOTOROLA
H
B
a
(a) Before
SH = Subr.
SL = Subr.
Last Subr.
Last Inter.
(n+3)H
R TS
RTI
FIGURE 21 – PROGRAM FLOW FOR RTS
Execution
Addr.
Addr.
Instr.
I nstr.
J
I
Semiconductor
19
FLOW FOR RTI
Pc—
sp~
m—2
m—1
n+l
n+2
m—6
m—5
m—4
m—7
m—3
m—2
m—1
“+1
s“
m
Products Inc.
I
I
(b) After
7E
Next
Last S“br.
ACCB
ACCA
Main
CCR
PCH
PCL
x~
XL
Execution
I“str.
Instr.
4
I
I