Tandy 1000 Technical Reference Manual

Tandy 1000
intel
iAPX 88/10
Technical Reference Manual
A.C. CHARACTERISTICS (6066 TA = O°C to 70°C, Vee ~ 5V ~10%j
(6066-2: TA = O°C to 70°C, Vee = 5V ~5%j
MINIMUM COMPLEXITY SYSTEM TIMING REQUIREMENTS
8088 8088-2
Symbol
Parameter Min.
Max. Min. Max. Units
Test
Conditions
TCLCL
CLK Cycle Period
200
500
125 500 ns
TCLCH
CLK
Low Time
(2I.JTCLCL)-15 (2I.JTCLCLj-15
ns
TCHCL CLK
High Time ('hTCLCLj+2 ('hTCLCL)+2
ns
From 1.0V
TCH1CH2 CLK Rise Time 10
10
ns
to 3.5V
TCL2CL1
CLK Fall Time 10
10
From 3.5V
ns
to 1.0V
TDVCL
Data in
Setup Time 30 20 ns
TCLDX
Data in Hold Time 10 10
ns
ROY
Setup Time
TR1VCL
into 6284 (See
35
35
ns
Notes
1,2)
ROY Hold Time
TCLRIX into 6264 (See 0 0
ns
Notes
1,2)
TRYHCH
READY
Setup
(2I.JTCLCLj-15
(2I.J TCLCL) -15
ns
Time into
8086
TCHRYX
READY Hold Time
30
20
ns
into 6086
TRYLCL
READY
Inactive to
-8 -6
CLK (See Note 3)
ns
THVCH
HOLD
Setup Time 35
20
ns
INTR, NMI, TEST
T1NVCH
Setup Time (See 30 15
ns
Note 2)
TILIH
Input Rise Time
20
20
ns
From 0.6V
(Except CLK) to 2.0V
T1HIL
Input Fall Time
12 12
From 2.0V
(Except CLK)
ns
to 0.6V
3
AFN-00826C

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