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Tandy 1000 Technical Reference Manual

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PC
MEMORY
MAP
PCjr MEMORY
MAP
TANDY
l~~~
MEMORY MAP
3DF BIT
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NOT USED CRT PAGE
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CRT PAGE
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3DF
BIT 1
NOT USED
CRT PAGE 1
CRT PAGE 1
3DF BIT 2
NOT USED
CRT PAGE 2
CRT PAGE 2
3DF BIT 3
NOT USED
PROCESSOR PAGE 1
PROCESSOR PAGE 1
3DF
BIT 4
NOT USED
PROCESSOR PAGE 2
PROCESSOR PAGE 2
3DF BIT 5 NOT USED PROCESSOR PAGE 3
PROCESSOR PAGE 3
3DF BIT 6
NOT USED
VIDEO ADDRESS MODE
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VIDEO ADDRESS MODE
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3DF BIT 7 NOT USED
VIDEO ADDRESS MODE 1
VIDEO ADDRESS MODE 1
o
o
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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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