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Sharp MZ-3500 User Manual

Page 78

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M7 3500

8 4 System SW1 (DIP SW)

(User operative through the cabinet bottom)

No

Signal name

Function

Position

Polarity

Description

SW1

SW2

ON

OFF

Printer select

ON

OFF

SW2

SWl

ON

ON

CE332P

OFF

ON

MZ1P02

ON

OFF

102824

OFF

OFF

-

#47 pin of MMR

#48 pm of MMR

ON

High resolution CRT (MZ1D02, MZ1D03)

SW3

CRT select

OFF

Medium resolution CRT (MZl 001, M21D06)

#51 pin of MMR

SW4

Choice of decimal
point output

format

ON

A period IS output for a decimal point

OFF

A comma is outputted for a decimal point

#52 pin of MMR

SW5

SW6

SW7

ON

Low state or open ER signal during data output

will result in an error

OFF

The signal ER becomes invalid

ON

RS232C
assign

CD IS high as long as power is on to the mam

unit

OFF

CD goes high only during data output Flowever,

It

would not go high if the echo back function is

on the host side

ON

An error IS cause when the PO signal is high

during data output

OFF

Polarity IS inverted for the above

To CTS, DSR

of the 8251

To CTS of the
8251

ON

FD1

(SW8)

Key shift mode

setup

Normally in capital letter, but in small letter

when shifted

OFF

Normally small leter and in capital letter when

shifted

#54 pin of MMR
(FDD

ON

P/M

(SW9)

Choice of CG

for display

3500 CG will be assigned when the 200 raster

CRT IS in use

OFF

2000 CG will be assigned when the 200 raster

CRT IS in use

Dip switches (A) and (B) located on the PWB are used for

servicing the MFD or for other machine service and there

fore the user is not supposed to use these switches In

addition, these switch must be used when either the CE

330M or 331M IS used as the expansion MFD

DIP SW (A)

No

Stgnal n^ne

1

SEC

(SW1A)

44 pm of MMR

2

FD2

(SW2A)

56 pm of MMR

3

FD3

(SW3A)

58 pm of MMR

4

SRQ

(SW4A)

Bus request
to sub-CPU

DIP SW (B)

No

Signal name

1

SRES

(SW1B)

SUB CPU

reset signal

2

SW2B

SUB CPU BUS

select signal

P/M signal

(To A3 CG)

1

2

3

OFF

OFF

OFF

When SH m use

ON

OFF

OFF

When DH m use

OFF

ON

OFF

ON

ON

OFF

OFF

OFF

ON

Use of the CE330M as an expansion unit

ON

OFF

ON

Use of the CE331M as an expansion unit

OFF

ON

ON

Check mode * 1

ON

ON

ON

Check mode *2

*1 Test program is loaded and executed

*2 Provided for the test of the MFD interface The

read/write test is carried out for the expansion unit

Used for an individual test of the CPU PWB When these

three switches are turned off altogether, it makes the

sub CPU operated independently To be used in th ON

condition under a normal situation