VTech Laser 128 Manuals

Manuals and User Guides for VTech Laser 128. We have 1 VTech Laser 128 manual available for free PDF download: User Manual

VTech Laser 128 User Manual (135 pages)

Brand: VTech | Category: Desktop | Size: 58.62 MB

Safety Information
4
Power up Precaution
4
Setting of 40/80 Column Switch
4
Setting of ALT/STD Switch
4
Table of Contents
5
Overview
10
Features
10
Product View
10
Controls and Indicators
13
Preparation
18
Connecting the AC Power Adaptor
18
Connecting the Video Monitor/Tv
18
Starting up the Computer System
19
The Keyboard
21
Typewriter Keys
22
QWERTY Keyboard Layout
22
DVORAK Keyboard Layout
23
Cursor-Control Keys
24
Command Keys
24
The CTRL Key
25
Function Keys
26
The Video Display
27
The Numeric Keypad
27
Selecting a Suitable Video Display Device
28
Video Display Modes
29
Text Modes
29
40-Column Text
29
Graphics Modes
30
80-Column Text
30
Low-Resolution Graphics
30
Medium-Resolution Graphics
31
High-Resolution Graphics
31
Double-High-Resolution Graphics
31
Mixed Graphics/Text Display
32
Input/Output Ports
33
Built-In I/O Devices and Interfaces
33
Port 0 - 40-Column Display
34
Port 1 - Parallel/Serial Printer
35
Parallel Printer Commands
35
Serial Printer Commands
36
Printing Graphics with the Computer
38
Port 2 - Serial Communication
39
Port 3 - 80-Column Display
41
Port 4 - Mouse
43
Port 5 - Expansion Memory
44
Port 6 - 5.25" Disk Drive
44
Adjusting Drive Speed
45
Expansion Connector
46
Port 7 - 3.5" Disk Drive
46
Basic Manual
50
To Start Basic
50
Variables
50
Variable Names
51
Array Variables
51
Expressions and Operators
52
Arithmetical Operators
52
Logical Operators
52
String Operations
53
Relational Operators
53
Functional Operators
53
Some Background in Basic Programming
54
Line Format
55
Constants
55
Using a Printer with the Computer
56
Serial Printer
56
Basic Commands and Statements
57
Parallel Printer
57
Ampersand Command (&)
58
Call
59
Chrs$
59
Clear
60
Color
60
Cont
61
Data
62
Def FN
62
Del
63
DIM
63
Draw
64
Drawing Shapes
64
Setting up the Shapes
64
The Shape Table
65
Before Using Draw, Xdraw, ROT and Scale
66
Entering a Shape Table
66
End
67
Flash
68
For ... Next
69
Get
70
Gosub ... Return
71
Goto
72
Gr
73
Hcolour
73
Hrg Hrg2
74
Himem
74
Hlin
75
Home
75
Hplot
76
Htab
76
If ... Goto and if ... then ...
77
In#
78
Input
78
Inverse
79
Left$
79
Let
80
List
80
Lomem
81
MID$
81
New
82
Normal
82
Notrace
83
ONERR Goto
83
On ... Gosub and on ... Goto
84
Pdl
85
Peek
86
Plot
86
Poke
87
Pop
87
Pr#
88
Print
89
Read
90
Rem
90
Restore
91
Resume
91
Rights
92
Rot
92
Run
93
Scale
93
Scrn
94
Spc
94
Speed
95
Stop
95
Str$
96
Tab
96
Text
97
Trace
97
Usr
98
Vlin
98
Vtab
99
Wait
99
Xdraw
100
Basic Functions
101
Abs
102
Asc
102
Atn
103
Cos
103
Exp
104
Fre
104
Int
105
Len
105
Log
106
Pos
106
Rnd
107
Sgn
107
Sin
108
Sqr
108
Tan
109
Val
109
Speeding up Program Execution
112
Installation of Expansion RAM
113
Removing the Top Cabinet
114
Removing the Keyboard
115
Removing the Top Shield Plate
115
Inserting the Dynamic RAM Chips
115
Expansion Connectors Diagrams
116
Basic Error Messages
120
Can't Continue Message
120
Division by Zero Message
120
Illegal Direct Message
121
Illegal Quantity Message
121
Next Without for Message
121
Out of Data Message/Out of Memory Message
121
Overflow Message
122
Redim' Array Message
122
String too Long Message
122
Bad Subscript Message
122
Keys and the Associated Codes
123
Display Characters
124
ASCII Character Codes
125
Mathematical Functions
127
Summary of Basic Commands
128
List of Reserved Words in Basic
132

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VTech Laser 128 User Manual (135 pages)

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