Epson Equity Ie Troubleshooting Guide download pdf (Page 3)

EQUITY le

I/O Port Addresses

kidross

FUrloWl

Number

Functkxt

000-OlF

DMA

Controller,

3237A-5

020-03F

Interrupt Controllrr

040-OSF Timer

/

Cwntsr

oso-062

I/O Ports

os3-OSF

Systam

Board/Control and Status

OSO-OSF

DMA

Page

Flegisters

w-OAF*

lnterrupt Controller

Extsnsion

OBO-OBF

Rsal

-Time Clock Command/Status

OE0

-

OEF

Ftsal

-Time Clock

Countar/RAM

320-32F

Fixsd

Disk

378-37F

Parallel Port

3CO-3DF

Vidso

Subsystam

3FO-3F7

Dlsketts

3FS

-

3FF Ssriai

Port

IRQO

IRol

IRQ2

IRQ3

IFKM

IRQS

IRQ6

IRO7

Timer Output

Ksyboard/Mousa/RTC

Video

ROSONd

Ssrial

Port 1

Hard Disk

floppy Disk

Parallel Port

l

The

NM

mark can

ba

sst

and reset through system

sottwars

as follows:

Writs

hex.

SO to I/O address hex. A0

(snabls

NM)

Write hex. 00 to l/O

addrsss

hex. A0

(snabla

NM)

NOM:

I/O Address hex

Ooo

to OFF are

rssarved

for the

systam

board l/O.

DMA Channels

Funotlon

I

0

Not&ad

1 Spare

2 FDD Controller

3

HDD Controller

Hardware Interrupts

Equity Series Computers

4/3/89

EQle - 3

1 2 3 4 5 6

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