MC6800 Datasheet, PDF (11/32 Pages) Motorola, Inc – 8-BIT MICROPROCESSING UNIT (MPU)

I I ^Cycle
#1
*
*
I ^#4
FIGURE 11 – WAIT INSTRUCTION TIMING
*
I^&
I ^#7
I ^#8
I^*
I I ^{#1 o}
n
n+l
I ⁿ⁺²
Address
Bus
Instxrucxtionx
x
x
x
x
R/R
VMA
Interrupt
IRQ or
m
Data Bus
BA
x
Wait
I nst
x
x
x
Pc 0-7
PC 8-15
Note:
Midrange waveform indicates
high iMDedanCe
state.
x
I 0-7
xxx
I B-15
ACCA
ACCB
\
1[
[[
A
-TBA
New PC
Address
First Inst
of Interrupt
Routine
xxx ^x
New PC 8-15
Address
New PC O-7
Address
FIGURE 12..+$tikE-STATE
CONTROL TIMING