Tandy 1000 Technical Reference Manual

Tandy 1000
Technical Reference Manual
/
(
+5"
5~
2la
>:'~
R'8
.-J~2
~
2.21<
R'7
+5V
33
RAS.
'SiIT- ---
14 a ~ 3 CPlLT
SHS
3~
~
CiJ
7
N:
'2
l~
74F04
13 9N: 741...508
R29
U U'S
5 7~f09
2.21<
1 74FI09
I V2
W!
~~H~
+IN>
8
~
9
8
28.63636 ""I-tZ
E5 Ea
~ LASCO
L6
OSCILLATOR
7~
'Et lJl!l
9 S
l~
~ Ep Q( 74='161 O:J 151'1:
74'''''
r Q.AQlOOOCW
L-1'
"
'4ckw
<!N
3.5791't-tz~
Lf;
.ux
4;~0
&~
~
R2BA
~---llil 9
MUX.
SH3
t==1t 7
ST15*
SH5
27 -
I
J U37
R2'
eRG
U38 YO piS STD.
5 741="109
t=
'OK
741="109
IN4148
~ ~~P~ ~~i:
5'
3
f;':'::~~
-~~
~ ~; ~~ ~~::
~~A
c-~-'i~~
Y6 9 ST6_
Y7 7 ST7.
GIG2AG2B
a 4 5
R24
...,
'OK
2l R28
~
-=-
2.) 6 33
CAS. 14 10
~Hftr
SH4
'2
'3
9
+5V
U37
u,a
1 741=109
5 74Fl09
14MCK~
U92
5
4
a
+5V
<!N
Lt~...,
I
'4LSOO
R34
R32
U40
1
'K
'OK
vee Gt«J
3 4
CPU/CAT SH 3
~EFl U45
7"-504
11 RES_ 8284
,J=D3
~~~ RESET 10
CP\.R::SE~
R32A
DYMUX
~
33
CPlJCLK
MlIX
13 F/C. elK B
SH ,
+5V
'ALSoa
IOWAIT
;:~~: ~~ ~
CPLR::AD~
~
..,
CPUPClK~
READY
U40 U92
SH '2
r~ =R.
~"
BMWA.
~
R82
• y 13
1 CSYNC*
4.7K
'ALS04 '4Lsoa
..., '5 ASYNC.
ACCESS
1-
R48
4 '",,·1 J~ "".
'("4.7K
~
~VSFIJ*
1
U92
~~·~~"I~
2 5 NC
,O~
8
3[ a
VSWA* 9
SHa
l'4LS7. 13'4LS7.
174L574
'ALSOO
UI02
HI
~
2
,
VIDEO WAIT
TERMINATE
I
y
A
VIDEO LOGIC lOW. '0.
000226
I :~: I
_________ ~ I"'" , "' 12

Tandy 1000 Specifications

General

Processor	Intel 8088
Processor Speed	4.77 MHz
RAM	128 KB (expandable to 640 KB)
Operating System	MS-DOS 2.11
Manufacturer	Tandy Corporation
Release Year	1984
Storage	Single or double 5.25" floppy disk drive (360 KB), optional hard drive
Sound	Tandy 3-voice sound
Ports	Parallel, Serial
Graphics	CGA (Color Graphics Adapter)
Graphics Modes	320x200, 640x200