Epson 10020 User Manual

Specifications

16-bit CPU

Main memory

Coprocessor

Read Only Memory

(ROM)

Direct Memory

Access (DMA)

Interrupt (8259)

Timer/counter

(8253-S)

Clock/calendar/RAM

Parallel interface

Serial interface

8088-1 microprocessor; 4.77 or

10 MHz clockrate; switch selectable

640KB

8087-1, 10 MHz microprocessor

(optional)

16KB (ROM BIOS)

Programmable DMA controller with

four channels-two on the
motherboard (one for refreshing and
one for diskette controller), two

available for user peripherals

including a hard disk controller

Programmable interrupt controllers,
8 interrupt levels

Three programmable timer/counters

Real-time clock, calendar, and

CMOS RAM for

configuration, battery back-up

Standard 8-bit parallel, DB-25
female connector; programmable

RS-232C, asynchronous, DB-25

male connector; programmable

Specifications B-1