Brand: EPSON
Category: Computer
Document Type: Quick Start Guide
Language: EN
Quick Start Guide for HX-20
Uploaded: Sept. 12, 2025, 4:17 a.m.
Manual Publish Date: 1982-01-01
Warranty Information
Warranty information is not specified in this document.
This manual provides a quick reference for the EPSON HX-20 Notebook Computer. It covers terminology, commands, functions, statements, variables, keyboard functions, character sets, sound function, monitor commands, and error messages. The operation summary below highlights key aspects:
Basic Operation: The HX-20 is a portable computer with a built-in keyboard, LCD screen, and optional peripherals. Users can input commands, write programs in BASIC, and utilize various functions for data manipulation and device control.
Keyboard Usage: Special keys and key combinations are detailed for screen editing, graphics production, and system control. Functions range from cursor movement and text editing to special command entry.
Programming: The manual lists commands, functions, and statements for programming, enabling users to create applications. This includes file handling, string manipulation, and mathematical operations.
Troubleshooting: A comprehensive list of error messages and their meanings is provided to assist users in diagnosing and resolving issues.
Refer to specific sections for detailed instructions on each aspect of operation.
Basic Operation: The HX-20 is a portable computer with a built-in keyboard, LCD screen, and optional peripherals. Users can input commands, write programs in BASIC, and utilize various functions for data manipulation and device control.
Keyboard Usage: Special keys and key combinations are detailed for screen editing, graphics production, and system control. Functions range from cursor movement and text editing to special command entry.
Programming: The manual lists commands, functions, and statements for programming, enabling users to create applications. This includes file handling, string manipulation, and mathematical operations.
Troubleshooting: A comprehensive list of error messages and their meanings is provided to assist users in diagnosing and resolving issues.
Refer to specific sections for detailed instructions on each aspect of operation.
Troubleshooting and error codes
| Error Code | Error Number | Message |
|---|---|---|
| /0 | 11 | Division by zero |
| AO | 52 | File already open |
| BD | 58 | Bad data in file |
| BF | 51 | Bad file mode |
| BN | 50 | Bad file number |
| BO | 61 | Buffer overflow |
| BS | 9 | Bad subscript |
| CN | 17 | Can't continue |
| DD | 10 | Duplicate definition |
| DS | 56 | Direct statement in file |
| DU | 60 | Device unavailable |
| FC | 5 | Illegal function call |
| FD | 55 | Bad file descriptor |
| FN | 23 | FOR without NEXT |
| ID | 12 | Illegal direct |
| IE | 54 | Input past end |
| IO | 53 | Device input/output error |
| IU | 59 | Device in use |
| LS | 15 | String too long |
| MO | 22 | Missing operand |
| NE | 63 | File does not exist |
| NF | 1 | NEXT without FOR |
| NO | 57 | File not open |
| NR | 19 | No RESUME |
| OD | 4 | Out of data |
| OM | 7 | Out of memory |
| OS | 14 | Out of string space |
| OV | 6 | Overflow |
| PP | 62 | Protected program |
| RG | 3 | RETURN without GOSUB |
| RW | 20 | RESUME without error |
| SN | 2 | Syntax error |
| ST | 16 | String formula too complex |
| TM | 13 | Type mismatch |
| UF | 18 | Undefined user function |
| UL | 8 | Undefined line number |
| UP | 21 | Unprintable error |
| WE | 24 | WHILE without WEND |
| WH | 25 | WEND without WHILE |