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Tandy 1000 Technical Reference Manual

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6253/8253·5
Tandy 1000
intel'
II
MODE
0:
Interrupt
on
Terminal Count
CLOCK~
I
,
WAO~
,
OUTPUT
IINTERRUPT)
I
WR".~
-------',.L.....J.------
m
~I
--8---
MODE
1:
Programmable
One,Shot
---r--
~i..._J:-':'~'J----
THI,-,(jfR---.r--L~
MODE
2:
Rate Generator
'-LOl.",.
Technical Reference Manual
-------------------
MODE
3:
Square Wave Generator
r:1.OCK.
4 2 4 2 4 2 4 2 4 2 4 2 4
OUTPUT{n.:4).
5 4 2 5 2 5 4 2 5 2 5 4 2
OUTPUT{n=51.
MODE
4:
Software Triggered Strobe
ClOCK
WR~-------
LOADn~---------
MODE
5:
Hardware Triggered Strobe
u.------
Figure
7,
8253 Timing Diagrams
6-144

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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