Tandy 1000 Technical Reference Manual

Tandy 1000
Technical Reference Manual
~:::
~IOD'
05
OA
~I006
~IOD4
~'OD2
~IODO
U92
06~8IOW' ~~
2607
27 D6
2805
2904
3003
3102
32 D1
33 DO
~ 8AOO
A42
33
1G 2G
, 15
03 Ugg 02 CRTPGO
~ ~g 74LS273 ~~~6~~=+:j:jC~AT£ipott'==+=========='-+--- --I-----,
~30 3Q~ 04 U112
~ ~ :f7'9:O-----+--='-=-''''---------1f------0~5 >'0"'-6 __ ---,
L
~===3'~7 60 6Q~
14
70
7Q~
)-"==-------------':Cf; agK 8Gf-'-"2'--"'ADRM='-++-- __ ---<l>---_!- j--J
~
6 tCO
~BA05
~ ~g~ 74ALS253
AAA
~BA12
31C3 1Y 7
33
102CO
11 2C1
A45
~BA06
'2
2C2
33
.§I:l6
'3
2C3
~
A
~
8
'G
2G
,
'5
~
6 tCO
~~~~14
~ ~g~ 74ALS253
A37
31C3
33
102CO
11 2C1 A36
~~~~15
122C2
33
132C3
.2!:!.-2
KlX'
'A A
~ CPU/CRTtt
26
'0
2G
,
15
CPlJPG1
CPlJPG2
~
76 ,~~U77 8
~
U''-''~--+--2!'1O'-LJ08 LSB6
03 A 04
74LSOB
74LSQ4
~~:
11 314.
NC~::
~}__"8=A'=5------------------------------~1~ ;:
NC4~
SH6
~ HGMEMAC.
~GAPH
I
'W' .0.
000
..
6
I :~', I
__ V_I_D_E_O_L_O_G_I_C __ ~ I'.'" O' 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