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Tandy 1000 Technical Reference Manual

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Tandy 1000
MC6845
Technical Reference Manual
FIGURE
6 - BUS
TIMING
TEST
LOAD
TFi
,1
:~;~~~
or
EqUIV
C
=:
130
pF
for
DO
07
-= -=
=
30
pF
for
MAO-MA
13,
RAO-AA4,
DISPEN,
HYSNC.
VSYNC,
and
CURSOR
A =
11
kf!
for
OO·D7
=
24
kn
for
All
Other
Outputs
FIGURE
7 - PIN
ASSIGNMENT
RAO}
RA,
Row
Addresses
AA2
for
Character
Generators
RA3
AA4
Refresh
Memory
Addresses
MA12
DisplaY
Enable
VCC
MC6845
CRTC
DO}
01
02
03
Data
8us
04
05
06
07
Cs}
AS
E _
Con',ol
RIW
CLK
Processor
Interface
@
MOTOROLA
Senl'conductor
Product.
Inc.

Table of Contents

Other manuals for Tandy 1000

Preview: User Guide
User Guide337 pages
Preview: Programmer's Reference Guide
Programmer's Reference Guide251 pages
Preview: Basic Reference Manual
Basic Reference Manual411 pages
Preview: Owner's Manual
Owner's Manual46 pages

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Tandy 1000 Specifications

General IconGeneral
ProcessorIntel 8088
Processor Speed4.77 MHz
RAM128 KB (expandable to 640 KB)
Operating SystemMS-DOS 2.11
ManufacturerTandy Corporation
Release Year1984
StorageSingle or double 5.25" floppy disk drive (360 KB), optional hard drive
SoundTandy 3-voice sound
PortsParallel, Serial
GraphicsCGA (Color Graphics Adapter)
Graphics Modes320x200, 640x200

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