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Epson Equity II Equity II Specifications, CPU and Memory, Controllers, ROM, DMA, A-1, 16KB, Power, Display, 16-BitCPU, tem board, Interrupt, Appendix A, Main memory

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Appendix A

Equity II Specifications

CPU and Memory

16-Bit CPU	NEC V30 microprocessor (8086-compati-
	ble), 4.77 or 7.16 MHz clockrate, operator-
	selectable execution speed and wait states
	20-bit address and 16-bit data bus
Math coprocessor	8087 support (optional with 8086 CPU),
	operates at 4.77 MHz clockrate only
Main memory	640KB RAM standard
ROM	16KB

Controllers

Clock/Calendar/	Real-time clock, calendar, and 50-byte
	CMOS RAM for configuration with
	battery backup
Display	Combination video display modes: IBM
	PC-compatible monochrome text/Hercu-
	les graphics (720 X 348); IBM PC-compati-
	ble RGB color/graphics (640 X 200) or
	composite video; controller on main sys-
	tem board

Floppy diskPowerDMAInterrupt

Supports up to two drives, drives available in one of two formats (double-density 360KB or high-density 1.2MB), controller on main system board

Power-on by switch or timer, power-off by switch or software

Programmable DMA controller with 3 channels: one for floppy disk controller; two available for user peripherals

Programmable interrupt controllers, 8 interrupt levels

A-1

Contents

Equity™ User’s Guide Page Page Equity II User’s Guide (Page 18) G W-BASICfor the Equity II/III (Pages 7-203to 7-207) MS-DOSfor the Equity II/III (Page 10-16) Contents Appendixes Figures Tables Introduction How To Use This Manual Setting Up Your System Unpacking Choosing a Location Choose a location that provides the following: Arranging the Components Figure 1-2.Alternate system arrangement The Front Panel The Back Panel Figure 1-4.Back panel The back panel components work as follows: Connecting the Power Cord Connecting a Video Monitor Connecting the Keyboard Figure 1-7.Connecting the keyboard Connecting a Printer Figure 1-9.Printer placement Figure 1-10.Connecting a printer 5.Plug the printer’s power cable into an electrical outlet Serial interface The Equity II character set Setting the DIP Switches Table 1-1.Set 1 DIP switches Switch (internal parallel Table l-2 and the descriptions below explain how to set the DIP switches in set l-2 Note: Switches 2-l through 2-4 and switch 2-6 are not used. Leave them Table 1-2.Set 2 DIP switches 8 (internal serial Using the Equity 64g KB RAM available Inserting and Removing Diskettes Special Keys on the Equity II Keyboard Using MS-DOSon the Equity Selecting an Execution Speed Resetting the Computer Turning Off the Equity Using Disks and Disk Drives How Disks Work Choosing Diskettes for the Equity Table 3-lshows what types of diskettes to use in the two types of drives Table 3-1. Drive/diskette compatibility Caring for Disks and Disk Drives Protecting your Data Using a Single Floppy Disk Drive Using a Hard Disk Drive Page Installing Option Cards Removing the Main Unit Cover As shown in Figure Figure 4-1. Back panel screws Figure 4-2.Side screws under plastic inserts Figure 4-3.Removing the main unit cover Installing an Option Card Figure 4-d. Inserting an option card 7.Keep the card’s packing materials in case you need to remove the card later Removing an access slot cover Replacing the Main Unit Cover Post-InstallationAdjustments Removing an Option Card Using a Mouse Using a Modem Troubleshooting The Computer Fails To Start Up The Video Display Does Not Appear The Computer Hangs Up or Freezes Floppy Disk Problems Hard Disk Problems Software Problems Printer Problems Option Card Problems Memory Problems The Battery Is Low CMOS battery needs replacing Page Equity II Specifications CPU and Memory Controllers Interfaces Power Supply Mass Storage Keyboard Environmental Requirements (5"to35T) Physical Characteristics (CPU Only) Power Requirements Options Glossary Code Command Configuration Control code CPU Disk drive has a Diskette DOS Double-density Hardware Any physical Highdensity data Input/output port Monochrome monitor Mouse MS-DOS An operating system from Microsoft. See DOS, Operating system Operating system Program Read Read/write head Reset RGB Software The programs that System diskette Write-protect tab Index Page Page Page Page Page Page Page Page 22 B-6 16 RS-232Cport 9-10, 16, A-2, B-6 secondary B-7 10-11 21, 27 12 A-4