MICRONICS MOTHERBOARD

80386-33 cache ASIC Full size

This document is for the full-sized (13.3" x 12.025") 80386-33 caching motherboard. It's

identifying features are: an LED between expansion slots #5 and #6; eight 16-bit expansion

slots; sixteen sockets for SIMMs (four banks of 4); a socket for a Weitek 3167 or Intel 80387

coprocessor; the Micronics ASIC chipset (four chips); two 9-pin serial port connectors; one

25-pin parallel port connector; one 16-bit IDE connector; one floppy connector.

The bus speed for this motherboard is fixed at 8MHz.

+=============================+

+ +

+ MOTHERBOARD SWITCH SETTINGS +

+ +

+ * = Default setting +

+=============================+

SW1

------------------------------------------

1 Reserved *On

2 80387 Coprocessor installed On

80387 Coprocessor not installed *Off

3 Reserved Off

4 Bios relocation enabled *On

Bios relocation disabled Off

5 Reserved *Off

6 Color video adapter *On

Monochrome video adapter Off

7 Cache enabled *On

Cache disabled Off

8 Reserved Off

SW2

------------------------------------------

1 COM1 Enabled (3F8-3FF) *On

COM1 Disabled Off

2 COM2 Enabled (2F8-2FF) *On

COM2 Disabled Off

3 IDE interface enabled *On

IDE interface disabled Off

4 Floppy controller enabled *On

Floppy controller disabled Off

5 Primary Floppy address (3F0-3F7) *On

Secondary Floppy address (2F0-2F7) Off

6 Parallel port setting (See below)

7 Parallel port setting (See below)

8 Reserved *On

Parallel port settings

SW2.6 SW2.7 Parallel Port Address IRQ

----- ----- ------------- ------- ---

ON ON LPT1 378-37F 7

OFF ON LPT2 278-27F 5

ON OFF LPT1 3B8-3BF 7

OFF OFF Port disabled

+=============================+

+ +

+ MOTHERBOARD JUMPER SETTINGS +

+ +

+=============================+

J5 Keylock / Power LED

Pin 1 - Power LED signal

Pin 2 - no connector

Pin 3 - Ground

Pin 4 - Keyboard lock signal

Pin 5 - Ground

J6 External keyboard connector

Pin 1 - Keyboard clock

Pin 2 - Keyboard data

Pin 3 - no connector

Pin 4 - Ground

Pin 5 - +5 volts DC

J8 External speaker

Pin 1 - Speaker

Pin 2 - no connector

Pin 3 - Ground

Pin 4 - +5 volts DC

J9 External 6-volt battery connector

Pin 1 - Battery Positive

Pin 2 - no connector

Pin 3 - Ground

Pin 4 - Ground

J60 - Hard drive LED

Pin 1 - Signal

Pin 2 - Ground

Pin 3 - Ground

Pin 4 - Signal

W1 Reset switch

Pin 1 - Signal

Pin 2 - Ground

W2 Bios size

Pin 1-2 512K

Pin 2-3 256K (default)

W4 Turbo LED

Pin 1 - Signal

Pin 2 - Ground

W5 Turbo switch

Pin 1 - Signal

Pin 2 - Ground

W9 Non-cacheable region

Pin 1-2 D00000-DFFFFF

No connection E00000-EFFFFF

W10 Base memory size

Pin 1-2 512KB

No connection 640KB (default)

W14 Cache configuration

Pin 1-2 Direct map (32KB)

No connection Two-way set associative (64KB)

W15 Cache configuration

Pin 1-2 Direct map (32KB)

Pin 2-3 Two-way set associative (64KB)

W20 Reserved

No connection

W500 Memory configuration

Pin 1-2 256Kx9 SIMMs in Bank 0

Pin 2-3 1Mx9 SIMMs in Bank 0

W501 Video BIOS cache

No connection Video BIOS non-cacheable

Pin 1-2 Video BIOS cacheable

W510 Memory configuration

Pin 1-2 256Kx9 SIMMs in Bank 1

Pin 2-3 1Mx9 SIMMs in Bank 1

W603 Reserved

Not installed

W604 Reserved

Pin 1-2

A note on the Serial port connectors:

=====================================

There are two common pin-outs for 9-pin serial connectors. It is important to use the cables

supplied with this board. If you do not have these original cables, make sure the cable is

configured as follows:

Motherboard DB-9

1 6 ---------------

2 7 \ 1 2 3 4 5 /

3 8 \ 6 7 8 9 /

4 9 ---------

5 .

The tenth pin is normally removed from the motherboard connector.

This document is for the Mport 325 and Mport 333 Portable computers. This system is

based on the Intel 80386-25 and 80386-33 CPUs respectively. It has a built-on video

system based on the Cirrus Logic video chipset. It supports an external monitor, and

has one 16-bit slot, which can accommodate a 2/3 length card. The backplane connector

is exposed, to allow access like a desktop case for the card.

Up to 8MB is supported inside the unit, using 1Mx9 SIMMs. There are two serial and one

parallel port. The parallel port connector can be used for a parallel device, or can

be used to connect an external floppy drive.

The units come with either a 40MB Alps drive, or a 120MB Conner drive installed. One

3.5" 1.44MB floppy drive comes installed.

The video card comes with drivers for Windows 3.0, but not Windows 3.1. The drivers

were written by Cirrus Logic. There are also drivers for AutoCAD release 10, GEM 3.x,

Ventura 2.0, Lotus 1-2-3 version 2.xx, and Lotus Symphony. The built-in display has

a 640x480 VGA Monochrome screen supporting 16 levels of gray.

+=======================+

+ +

+ SWITCH SETTINGS +

+ +

+ * = Default setting +

+=======================+

SW1 Serial A enabled *UP

Serial A disabled DOWN

SW2 Serial B enabled *UP

Serial B disabled DOWN

SW3 PRT (parallel) enabled *UP

PRT (parallel) disabled DOWN

SW4 Turns on LCD display *UP

Turns off LCD display DOWN

SW5 80387 not installed *UP

80387 installed DOWN

SW6 Video controller disable *DOWN

SW7 Speaker volume high UP

Speaker volume low *DOWN

A/B/PRT switch settings

=======================

Switch Drive A: Drive B: Printer

-----------------------------------------

LEFT External Internal Disabled

Floppy Floppy

-----------------------------------------

MIDDLE Internal External Disabled

Floppy Floppy

-----------------------------------------

RIGHT Internal N/A Enabled *!!!! DEFAULT

(Default) Floppy

-----------------------------------------

Serial A and B Pin-outs

=======================

Pin Signal Description

--- ------ -----------

1 DCD Data carrier detect

2 RXD Receive data

3 TXD Transmit data

4 DTR Data terminal ready

5 GND Signal ground

6 DSR Data set ready

7 RTS Request to send

8 CTS Clear to send

9 RI Ring initiate

Parallel Port Pin-out

=====================

Pin Signal Description

--- ------ -----------

1 STBP* Strobe

2 DP0 Data bit 0

3 DP1 Data bit 1

4 DP2 Data bit 2

5 DP3 Data bit 3

6 DP4 Data bit 4

7 DP5 Data bit 5

8 DP6 Data bit 6

9 DP7 Data bit 7

10 ACKP* Acknowledge

11 BUSYP Busy

12 PEP Out of paper

13 SLCTP Printer selected

14 AFDP* Auto feed

15 ERRD* Error

16 INITP* Initialize

17 SLINP Select input

18 GND Ground

19 GND Ground

20 GND Ground

21 GND Ground

22 GND Ground

23 GND Ground

24 GND Ground

25 GND Ground

External Floppy Disk Drive Port

===============================

Pin Signal Description

--- ------ -----------

1 N/C No connection

2 INDEX

3 TRACK-00

4 WR-PROTECT Write protect

5 RD-DATA Read data

6 DSKCHANG Diskette change

7 N/C No connection

8 N/C No connection

9 N/C No connection

10 DRV2 Drive select 2

11 MOTOR2 Motor enable 2

12 WR-DATA Write data

13 WR-GATE Write enable

14 NLL High density select

15 SIDE-1-SEL Head 1 select

16 DIRECTION

17 STEP

18 GND Ground

19 GND Ground

20 GND Ground

21 GND Ground

22 GND Ground

23 GND Ground

24 GND Ground

25 GND Ground

External VGA Port

=================

Pin Signal Description

--- ------ -----------

1 AR Red

2 AG Green

3 AB Blue

4 MS2 Monitor sense 2

5 GND Ground

6 GND Ground

7 GND Ground

8 GND Ground

9 N/C No connection

10 GND Ground

11 MS0 Monitor sense 0

12 MS1 Monitor sense 1

13 HSYNC Horizontal sync

14 VSYNC Vertical sync

15 N/C No connection

External Keyboard Port

======================

Pin Signal Description

--- ------ -----------

1 KBCLK Keyboard clock

2 KEYDAT Keyboard data

3 N/C No connection

4 GND Ground

5 +5V Power +5V

Shield GND Case ground

Game Port

=========

Pin Signal Description

--- ------ -----------

1 +5VDC +5V DC

2 Button4 Button1 / Joystick1

3 Position0 X-axis / Joystick1

4 GND Ground

5

6 Position1 Y-axis / Joystick1

7 Button5 Button2 / Joystick1

8 +5VDC +5V DC

9 +5VDC +5V DC

10 Button6 Button1 / Joystick2

11 Position2 X-axis / Joystick2

12 GND Ground

13 Position3 Y-axis / Joystick2

14 Button7 Button2 / Joystick2

15 +5VDC +5V DC

Hot-key combinations

====================

Keystroke Description

--------- -----------

<Ctrl><Alt><Del> Warm boots the system

<Fn><F3> or

<Ctrl><Alt><F3> Enters CMOS setup

<Fn><F4> or

<Ctrl><Alt><F4> Toggles reverse video

<Fn><F6> or

<Ctrl><Alt><F6> Toggles text mode attribute emulation

<Fn><F7> or

<Ctrl><Alt><F7> Toggles bold font for intensified text

<Fn><F8> or

<Ctrl><Alt><F8> Toggles expanded mode

<Fn><F9> or

<Ctrl><Alt><F9> Toggles CPU speed between 6MHz, 8MHz, and Full-speed

<Fn><F10> or

<Ctrl><Alt><F10> Toggles internal VGA add-in board

<Ctrl><Break> Stops a software operation

<Ctrl><C> Stops a software operation that you are currently performing

<Ctrl><S> Pauses the screen output. Press any other key to resume.

<Fn> Enables keypad overlay when held down

<Fn><Numlock> Toggles numeric keypad on/off