Epson HX-20 Figure, HX-20Architecture

As shown in Figure 9-1, the main microprocessor accesses read- only and read-write memory, and controls the keyboard, LCD display, and clock. The slave microprocessor controls the micro- printer, speaker, and external cassette. The cartridge interface has ports for both the main and slave microprocessors.

Figure 9-1

HX-20 Architecture

I ROM I

SOCKET

8 K B

6301

MAIN CPUBARCODE READER INTERFACE

CARTRIDGE

INTERFACE

-El



6301		CASSETTE TAPE
6301		INTERFACE
SLAVE CPU		INTERFACE

POWER

SUPPLY

Contents

HX-20OPERATIONS MANUAL Page Federal Communications Commission Radio Frequency Interference Statement CONTENTS 1 Congratulations 3 Preparing your HX-20for use Using the 6 Connecting your HX-20to other devices 7 What if you have problems 8 Storing your Congratulations memory even when you turn it off BASIC Tutorial and Reference Manual graphics option ROM option cartridges Option cartridges program micro- cassette expansion unit o n e o r m o r e f l o p p y - d i s k on-line bar code reader personal Cautions Do not remove the system bus cover system bus expansion unit Treat the circuit cover with care Use only the HX-20AC adapter to charge HX-20batteries It is not designed to run your directly AC current Don’t overcharge the batteries Don’t pull on the paper when the printer is active Connect the HX-20only to appropriate peripherals Protect the HX-20from physical shock Protect the HX-20from extreme humidity Protect the HX-20from extreme heat and cold Page Preparing your HX-20for use 6)The Epson HX-20BASIC Tutorial and Reference Manual Charging the batteries Preparing the printer for use Removing the printer cover Inserting the paper roll not Page Page Inserting the ribbon cartridge Replacing the printer cover Adjusting the viewing angle optimal viewing angle: your CTRL/@Initialize MONITOR BASIC Enter DATE and TIME MMDDYYHHMMSSG Figure Format for Specifying Date and Time time Selecting a different character set dealer reference may The BASIC Tutorial and Reference Manual Page DIP Switch Settings for off Page Using the HX-20 up scroll down window Keys You May Use To View The Menu top bottom Choosing an item from the menu the key Epson HX-20Technical Reference Manual See screen editor The screen editor insert delete The cursor Page cursor cursor up down four Scrolling scrolls Homing the cursor homing NOW IS THE TIME F f-ALLGOOD MEN TO CO ALL GOOD MEN TO COM TIME FOR ALL GOOD M D OF THEIR PARTY Retyping change type over Deleting text right Insert mode insert mode exited inserted move to the right exit and lower case upper case while you are holding down lower case Numeric mode numbers innumeric mode 7 8 9 U J K L M Non-Numeric Characters Available in Numeric Mode Screen Editor Modes Graphic characters graphic characters musical note telephone Printing the screen hard copy so specialfunction LCD Page Using the special function keys programmable BASIC Tutorial and Reference Manual manual microcassette mode Page Connecting your HX-20to other devices Page BASIC Connecting your HX-20to an RS-232device RS-232 compatible device parallel communicate protocol HX-20Default Protocol for RS-232Port BASIC Tutorial and Reference Manual.) Connecting your HX-20to a bar code reader Page Page What if you have problems If the menu displays garbage BASIC Tutorial and Reference Manual.) Unfortunately If you encounter other problems Storing your HX-20 Page Specifications HX-20Architecture Expansion HX-20Expansion Specifications CPU and Memory Internal Expansion Expansion External Expansion Serial Peripheral Cartridge Cartridge Type External Cassette AC Adapter (Battery Charger) Switches Internal External Keyboard and Character Set CX-20Acoustic Coupler Display Controller Switch Box RS-232CCables Serial Cables (High Speed)