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Tandy 1000 Technical Reference Manual

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Tandy 1000
MC6845
Technical Reference Manual
FIGURE
4 -
RELATION
BETWEEN
LPSTB
AND
REFRESH
MEMORY
ADDRESS
elk
MAO-MA13
0.8
V
'LPD2
-+--f-----,---+-o--I
When
the
CATe
detects
the
rising
edge
of
LPSTB
in
this
periOd,
the
CATe
sets
the
Refresh
Memory
Address
'M+2'
into
the
LIGHT
PEN
REGISTER
tLPD1'
tLPD2:
Period
of
uncertainty
for
the
Refresh
Memory
Address.
®
MOTOROLA
Senllconductor
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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