Olivetti M240 User Manual

CHARACTERISTICS

Personal Com puter - Pocket Service G uide

M240

Microprocessor 8086, 16 bit
Clock 10 MHz
RAM access t im e 120 ns
Wait st ates 0
Maximum RAM capacity 640 KB

BOARDS

FUNCTION DESCRIPTION D.R.S. CODE CHARACTERISTICS

CPU System Board
CPU System Board
Console Contr oller
Bus Adapter 8-BIT
Bus Adapter 16-BIT
Power supply 220 V
Power supply 220 V
OGC Monitor adapte r
PGC Monitor adap ter
OEC Monitor adap ter
OVC Monitor adap ter
Hard Disk WD Contr oller
Hard Disk NCL Controller
External uFD 720 KB
interface
External uFD interface

BA200
BA208
CO124
IN093
IN094
LA16B
LA16C
GO708
GO423
GO451/GO467/GO491
GO729
GO425
GO447
IF362

IN101

411658 H
411730 V
411659 A
968651 Q
968652 R
411052 M
411711 N
411687 P
411688 Y
411860 Y
412452 L
411423 E
411660 F
411743 W

Managed by spares
Managed by spares
Not interchangeable with
other 185 W
Olivetti
Positive video
EGA comp at ib le
VGA compatible 8-BIT
Managed by spares

An external unit

2

ROM BIOS/PAL/ EPROM LEVEL

FUNCTION EVOLUTION

ROM BIO S H

RAM Decoder
Bus Converter logic
Bus Converter logic
Bus Arbiter
uP8742 Keyboar d co ntro ller
Character Generator ROM 259
Keyboard firmwa re (ANK 25-10 2)
Keyboard firmwa re (ANK 25-02 )

M240 2-1

PCH5 2.04

L

PCH6 2.04
PL3S

PL6Z
PL27
PL3P

PCFY 5.26
uPD8040 (CS35)
PDB3 3.2

PCHE 2.10
PCHF 2.10

PLYW/PLWW
CSQM 1.2
PDPL 5.28

PDB5 3.5

PCHK 2.11
PCHJ 2.11

CSQR 1.5
uPD8050: CSQH, CSP4

PCHL 2.12
PCHM 2.12

CPU 8086

FLOPPY DISK
CONTROLLER

P8250 SER.
INTERFACE
CONTROLLER

PGA PAR.
INTERFACE
CONTROLLER
8237A DMA

ROM BIOS H

8253 TIMER

DIP-SWITCH B

DIP-SWITCH A

ROM BIOS L

PL3S
MEMORY
DECODER

PL6Z BUS
CONVERTER
LOGIC

PL27 BUS
CONVERTER
LOGIC

PL3P
BUS ARBITER

Personal Comp ut er - Pock et Se rv ice G uide

PAL PLYW

Solves "Parity Error" prob lem s

(CDM 240.60. 5/ 505A)
PAL PLWW

Solves compatibility with REDES ETHERLINK and 3 COM

(BIT 2 40.60.5/07)
BIOS 2.10

(BIT 2 40.60.5/8)

Solves:

- "Forma t Failur e" mess age du ring har d disk for m atting
under MS DOS

- WANGTEK 40 MB stream i ng tape unit manage m ent

- I/O errors in floppy disk after an ON/OFF sequence

- Clock problems after using "G OSLO W "

- Possibility of testing system from a remot e work station

- Possibility of programming in RTCC

BIOS 2.11

- Solves FUJITSU 82 84 problem

(BIT 2 40.60.5/10)
BIOS 2.12

BIOS 2.14
Keyboard firmware

- Manages 40 MB har d disk

- Solves 3.5" JU253 floppy problem (BIT 11)

Solves F9 decoding pro blem s

PDB5 3.5 (BIT 241.60.5/4)

SYSTEM BOARD COMPONENTS AND SETTINGS : BA200 /BA208

P4 P3 P5P2P1

OMEGA 4

COPROCESSOR

8041 8742
KEYBOARD
CONTROLLER

P6

P7

2-2 M240

P8

P9

INTERRUPT

BSA6A

Personal Com puter - Pocket Service G uide

DIP-SWITCHES OF GRO UP A

AREA 12345FUNCTION

RAM capacity ON ON RAM not enabled

ON OFF 256 KB
OFF ON 512 KB
OFF OFF 640 KB

EGC board ON Present

OFF Not present

No.

MFD units ONON1 unit

OFF ON 2 units
ON OFF 3 units
OFF OFF 4 units

AREA 6 7 8 FUNCTION

Monitor type
and scr een
form

ON ON EGA INS. or CRT not pr ese nt
OFF ON 40 x 25 colour
ON OFF 80 x 25 colour
OFF OFF 80 x 25 monochromatic

Coprocessor 8087 ON Not present

OFF Present

2

DIP-SWITCHES OF GRO UP B

AREA 1234FUNCTION

Microfloppy
density

ON 720 KB/360
OFF 1.44 MB /1.2

Unit A ON 5.25"

OFF 3.5"

Unit B ON 5.25"

OFF 3.5"

Floppy controller ON Enabled

OFF Disabled

AREA 5678FUNCTION

ROM BIOS ON BIOS HD - system board

OFF BI OS HD o n contr oller

Monitor
controller

ON OGC
OFF Others

Serial port ON Enabled

OFF Disabled

Parallel port ON Enabled

OFF Disabled

M240 2-3

Personal Comp ut er - Pock et Se rv ice G uide

JUMPERS

NAME FUNCTION AREA POSITION

P1 and P2 "Disk Change" signal enable

P1 = Unit B
P2 = Unit A

P3 Production Not present
P4 V.C.O. setting Present
P5 Production Not present
P6 Production Not present
P7 and P9 Production Present

P8 System ROM BIOS enable

360 KB MFD unit
720 KB, 1.2 MB,

1.44 MB uFD unit

Enabled Not present
Not enabled Present

1-2
2-3

I/O ADDRESS MAP

ADDRESS FUNCTION

000-01F
020-03F
040-05F
060-06F
070-07F
080-09F
0A0-0BF
378-37F
3F0-3F7
3F8-3FF

DMA CHANNELS

CHANNEL FUNCTION

DMA0
DMA1
DMA2
DMA3

DMA controller
Inte rrupt con tr o ller
Timer
Keyboard controller
Date and time
DMA register
NMI regi ster
Parallel contr oller
Floppy disk
Serial cont roller

RAM refresh
Available
Floppy disk
Available

INTERRUPT LEVELS

LEVEL FUNCTION

IRQ0
IRQ1
IRQ2
IRQ3
IRQ4
IRQ5
IRQ6
IRQ7

Timer
Keyboard
Available
Available
Serial port
Available
Floppy disk
Parallel port

2-4 M240

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