Tandy 1000 Technical Reference Manual

Tandy 1000
Technical Reference Manual
inter
iAPX 88/10
WAVEFORMS
(Continued)
BUS TIMING-MINIMUM MODE SYSTEM (Continued)
T,
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AD
O
CT/A
INTA CYCLE
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NOTE 1 I \I I I!
--+-_--.-- __ TC_VC_TV---!-K-_ r t~>--------
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NOTES 1,3
SOFTWARE HAL T
D"E'N,FiD,WR.INTA VOH
oriA" INDETERMINATE
AD, _ ADo ------l---'V INVALID ADDRESS SOFTWARE HAL T
~~-------
1. ALL SIGNALS SWITCH BETWEEN VOH AND VOL UNLESS OTHERWISE
SPECIFIED
2, ~~~~~NS:SM:i:~E~~~~ ~~EB~~~S~~;~DT3' T
W
TO DETERMINE IF lw
3. TWO INTA CYCLES RUN BACK-lO-BACK. THE 8088 LOCAL ADDR/DATA
BUS IS FlOATING DURING BOTH INTA CYCLES. CONTROL SIGNALS
ARE
SHOWN FOR THE SECOND INTA CYCLE
4. SIGNALS AT 82~ ARE SHOWN FOR REFERENCE ONl Y
S. ALL TIMING MEASUREMENTS ARE MADE AT 1.5Y UNLESS OTHERWISE
NOTED.
6
AFN-ooB26C

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