Advertisement
All
and more
about Sharp
PC-1500
at
http://www.PC-1500.info
2-2.
Internal
Structure
2-
2-1. Block diagram
Fig.
1-1
Block
diagram
of LH5801
VGG
'ICC
vss
s
T
A
D
XL
O Xll
!n:;t;uclKin
~~oooe~
&
(:Pl)
(;(lnltOI
tP0S
'NAil
HA
NY.I
Ml
Clock,
!1: !(:1111p
t
C~'l
trul
c
on1
1ol
T1
rne1
(;(l!i
lJ(,11
PO.,..,X:t
$UPI>¥
00ti:rl)l
Pu
Pv
01.s
P
I
0;>(
BAK
!~RQ
atst
r
0
-0
Rt
\\•
M(OM£10f0 Sfl
00-01
INO-tN7
PU
PV
UISP
Fig.
1-2
Internal
register
&
flipflops
PH
'I
PL
'I
P:
Pr~ ram
counter
VA
VO
VM
VDIS
SL
•
S:
Stack
pointer
Carr; a11d
bouov;
(by«>
to
byte)
XH
YH
I
UH
•1
XL
8
Xr~gf
Da1a
pointc-f.
8
YL
8
Yreg
:
or
8
~Ur~g
H<
~ n<nal
purpos~
: e .
regisier
A
•J
A:
Accumula:tor
TM
'I
T
1.1:
Tin,e1
Cl
PU
l
:
Ger.oral
purpose
flipflop
I_]
Pl/
j
1)
OISP: LCO
oa/off
coo110!
Do not sale
this
PDF!!!
-
·
Z: Zero
'
--
--
V:
Overf.Jo"v
-
H:
Care;·
(d1
g1l 1
0
dip,it)
7
Advertisement
