MICRONICS MOTHERBOARD

80386-I Cache (09-00010 and 09-00021)

The 80386 I-Cache board is a full-sized (13.8" x 12.025") motherboard

which took all of its memory as DRAM plugged into a proprietary 32-bit

memory card. There are two versions of the I-Cache board, identified by

part numbers 09-00010, and 09-00021, which are silk-screened on the

component (top) side of the motherboard.

The most common memory card used with the I-Cache board is the M500. This

is part number 09-00011. The upper left corner has "385 Memory Board"

silk-screened on many M500 cards.

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

+ MOTHERBOARD SWITCH SETTINGS +

+ +

+ * = Default setting +

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

1 Reserved *On

2 80387 Coprocessor installed On

80387 Coprocessor not installed *Off

3 Bus speed selection (see below)

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 Bus speed selection (see below)

Bus speed selection

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

Switch settings -- * = default

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

Board SW1.3=OFF SW1.3=ON SW1.3=ON SW1.3=OFF

Speed SW1.8=OFF SW1.8=OFF SW1.8=ON SW1.8=ON

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

20MHz 5 Mhz 6.66 Mhz 10 Mhz * Undefined

25MHz 6.25 Mhz 8.33 Mhz* 12.5 Mhz Undefined

33MHz 8.33 Mhz* 11.33 Mhz 16.66 Mhz Undefined

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

+ +

+ MOTHERBOARD JUMPER SETTINGS +

+ +

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

J1 Keyboard connector

J2 External 6-volt battery connector

Pin 1 - Battery Positive

Pin 2 - no connector

Pin 3 - Ground

Pin 4 - Ground

J21 Keylock / Power LED

Pin 1 - Power LED signal

Pin 2 - no connector

Pin 3 - Ground

Pin 4 - Keyboard lock signal

Pin 5 - Ground

J22 External speaker

Pin 1 - Speaker

Pin 2 - no connector

Pin 3 - Ground

Pin 4 - +5 volts

J25 External Keyboard connector

Pin 1 - Keyboard clock

Pin 2 - Keyboard data

Pin 3 - no connector

Pin 4 - Ground

Pin 5 - +5V DC

W1 Reset switch

Pin 1 - Signal

Pin 2 - Ground

W7 Co-processor configuration

Pins 1-2 Asynchronous Operation

No connection Synchronous Operation

W8 Co-processor configuration

Pins 1-2 Asynchronous Operation

No connection Synchronous Operation

W9 Turbo light connector

Pin 1 - Signal

Pin 2 - Ground

W12 Cache configuration

Pins 1-2 Direct mapped (32KB)

No connection Two-way set associative (64KB)

W13 Cache configuration

Pins 1-2 Direct mapped (32KB)

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

W15 Turbo switch

Pin 1 - Signal

Pin 2 - Ground

W22 Non-cacheable region selection

Pins 1-2 E00000 - EFFFFF non-cacheable

No connection D00000 - DFFFFF non-cacheable

W23 Reserved

No connection

W30 Reserved

Pins 2-3

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

+ +

+ MEMORY CARDS +

+ +

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

M500 memory card:

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

There is a bank of eight (8) switches in the upper left corner of the

M500 memory card. They should be set as follows:

SW1.1 SW1.2 SW1.3 SW1.4 SW1.5 SW1.6 SW1.7 SW1.8

1MB ON OFF ON ON ON OFF OFF OFF

2MB OFF ON ON ON ON OFF OFF OFF

4MB ON ON OFF OFF ON OFF OFF OFF

5MB OFF OFF OFF ON ON OFF OFF OFF

8MB OFF ON OFF OFF ON OFF OFF OFF

12MB OFF OFF OFF OFF ON OFF OFF OFF (with 4M-08)

16MB OFF OFF OFF OFF ON OFF OFF OFF (with 4M-08)

Recommended memory chips

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

Hyundai HY53C256LS-80 256Kx1 page mode DRAM

Toshiba TC511000P-85 1Mx1 page mode DRAM

Samsung KM41C1000P-80 1Mx1 page mode DRAM

Motorola MCM511000P-85 1Mx1 page mode DRAM

Siemens HYB511000-70 1Mx1 page mode DRAM

Siemens HYB511000-85 1Mx1 page mode DRAM

Intel P21010-08 1Mx1 page mode DRAM

Samsung KM41C1000P-80 1Mx1 page mode DRAM

4M-08 memory expansion board:

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

The 4M-08 provides an additional 4MB (expandable to 8MB) for the M500

memory card. There is a bank of four (4) switches on the card. The M500

must be filled with 8MB before the 4M-08 will function.

With the M500:

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

S1 S2 S3 S4

12MB OFF ON OFF OFF

16MB OFF ON ON OFF

MICRONICS MOTHERBOARD

80386-16 (FULL SIZE)

This document is for the full-sized (13.8" x 12.025") 80386-16 motherboard.

It's identifying features are: an LED between expansion slots #5 and #6; a

proprietary memory card slot #7; a bank of eight switches between slot #1

and the keyboard connector; four ROM sockets; 8-bit slots for #2 and #6;

16-bit slots for #1, #3, #4, #5, and #8; and a socket for an 80287 math

coprocessor next to the CPU.

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

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

+ +

+ MOTHERBOARD SWITCH SETTINGS +

+ +

+ * = Default setting +

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

1 Reserved *On

2 80287 Coprocessor installed On

80287 Coprocessor not installed *Off

80387 Coprocessor installed On

3 4 Mhz 80287 Coprocessor installed On

8 Mhz 80287 Coprocessor installed *Off

10 Mhz 80287 Coprocessor installed Off

4 Bios relocation enabled *On

Bios relocation disabled Off

5 Reserved *Off

6 Color video adapter *On

Monochrome video adapter Off

7 See below ---

8 Reserved *Off

If the M100C, or M400C memory card is installed, then switch 7 is

defined as follows:

7 Cache enabled *On

Cache disabled Off

If the M100, M200, or M300 memory card is installed, then switch 7 is

defined as follows:

7 Reserved *Off

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

+ +

+ MOTHERBOARD JUMPER SETTINGS +

+ +

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

J1 External 6-volt battery connector

Pin 1 - Battery Positive

Pin 2 - no connector

Pin 3 - Ground

Pin 4 - Ground

J21 Keylock / Power LED

Pin 1 - Power LED signal

Pin 2 - no connector

Pin 3 - Ground

Pin 4 - Keyboard lock signal

Pin 5 - Ground

J22 External speaker

Pin 1 - Speaker

Pin 2 - no connector

Pin 3 - Ground

Pin 4 - +5 volts

W1 Reset switch

Pin 1 - Signal

Pin 2 - Ground

W4 ROM size

Pin 1-2 128KB

Pin 2-3 256KB

W5 Reserved - always installed

W6 Memory card type

Pin 1-2 Static column memory card

Pin 2-3 Cache memory card

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

+ +

+ MEMORY CARDS +

+ +

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

M100 memory card:

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

The M100 memory card can hold 1MB or 2MB. The first MB is usually soldered

on the board. This is the card that was most commonly used by CompuAdd.

NOTE: All of the memory on the M100 must be static column DRAM (as opposed

to page mode DRAM) in order for the 2M-08, or 4M-08 to operate.

There is a row of nine (9) jumper pins in the lower left corner of the

M100 memory card. They should be positioned as follows:

1MB Pin 2-3, Pin 4-5, Pin 7-8

2MB Pin 1-2, Pin 4-5, Pin 7-8

4MB Pin 1-2, Pin 4-5, Pin 7-8 (with 2M-08)

6MB Pin 1-2, Pin 4-5, Pin 7-8 (with 4M-08)

10MB Pin 1-2, Pin 4-5, Pin 7-8 (with 4M-08)

Recommended memory chips for the second MB

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

Hitachi HM51258P-8 256Kx1 static column DRAM

Hitachi HM51258P-10 256Kx1 static column DRAM

Hitachi HM51258P-12 256Kx1 static column DRAM

NMB AAA2800P-07 256Kx1 static column DRAM

NMB AAA2800P-08 256Kx1 static column DRAM

NMB AAA2800P-10 256Kx1 static column DRAM

Panasonic MN41256A-08 256Kx1 page mode DRAM (see note above)

Hyundai HY53C256LS-80 256Kx1 page mode DRAM (see note above)

NMB AAA2801P-08 256Kx1 page mode DRAM (see note above)

NMB AAA2801P-10 256Kx1 page mode DRAM (see note above)

M200 memory card:

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

The M200 memory card can hold 4MB or 8MB using 1Mx1 DRAM. The top two rows

of chips make up bank 0, and the bottow two rows make up bank 1.

There is a set of five (5) two-pin jumpers in the lower left corner of the

M200 memory card. They should be set as follows:

W1 W2 W3 W4 W5

4MB ON ON OFF OFF OFF

8MB OFF ON OFF OFF OFF

12MB OFF OFF OFF OFF OFF (with 4M-08)

16MB OFF OFF OFF OFF OFF (with 4M-08)

Recommended memory chips

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

Toshiba TC511000P-85 1Mx1 page mode DRAM

Toshiba TC511000P-10 1Mx1 page mode DRAM

Samsung KM41C1000P-10 1Mx1 page mode DRAM

Samsung KM41C1000P-80 1Mx1 page mode DRAM

Mitsubishi M5M4100AP 1Mx1 page mode DRAM

Motorola MCM511000P-10 1Mx1 page mode DRAM

Motorola MCM511000P-85 1Mx1 page mode DRAM

Siemens HYB511000-85 1Mx1 page mode DRAM

Siemens HYB511000-70 1Mx1 page mode DRAM

Intel P21010-08 1Mx1 page mode DRAM

Intel P21010-10 1Mx1 page mode DRAM

M300 memory card:

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

The M300 memory card can hold 1MB, 2MB, or 6MB. Each of the first two MB

is made up of four (4) 256Kx1, and eight (8) 256Kx4 chips. The lower

four rows of chips hold 1Mx1 chips, and must be filled in completely. It

is not possible to partially fill the lower bank of memory.

There is a bank of eight (8) switches in the upper left corner of the

M300 memory card. They should be set as follows:

SW1.1 SW1.2 SW1.3 SW1.4 SW1.5 SW1.6 SW1.7 SW1.8

1MB OFF OFF OFF OFF ON ON OFF ON

2MB OFF OFF ON OFF ON ON OFF ON

6MB OFF ON ON OFF ON ON OFF ON

10MB ON ON ON OFF ON ON OFF ON (with 4M-08)

14MB ON ON ON OFF ON ON OFF ON (with 4M-08)

Recommended memory chips

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

Hyundai HY53C256LS-10 256Kx1 page mode DRAM

Hyundai HY53C256LS-80 256Kx1 page mode DRAM

NMB AAA2801P-07 256Kx1 page mode DRAM

NMB AAA2801P-08 256Kx1 page mode DRAM

OKI M514256-10 256Kx4 page mode DRAM

Fujitsu MB81C4256-10P 256Kx4 page mode DRAM

Siemens HYB514256A-80 256Kx4 page mode DRAM

Samsung KM44C256AP-80 256Kx4 page mode DRAM

Toshiba TC511000P-10 1Mx1 page mode DRAM

Toshiba TC511000P-85 1Mx1 page mode DRAM

NEC D421000C-80 1Mx1 page mode DRAM

Motorola MCM511000P-10 1Mx1 page mode DRAM

Motorola MCM511000P-85 1Mx1 page mode DRAM

Samsung KM41C1000P-10 1Mx1 page mode DRAM

Siemens HYB511000-85 1Mx1 page mode DRAM

Siemens HYB511000-70 1Mx1 page mode DRAM

Mitsubishi M5M4100AP 1Mx1 page mode DRAM

M100C memory card:

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

The M100C memory card can hold 1MB or 2MB. It has an Austek cache

controller in the lower left corner of the card. It accommodates either

the 2M-08, or the 4M-08.

NOTE: Static column DRAM (as opposed to page mode DRAM) is recommended when

using either the 2M-08, or the 4M-08.

There are two jumpers on the M100C memory card. W1 is in the upper left

corner, and W3 is in the lower left corner. They should be set as follows:

W1 W3

1MB Pin 1-2 ON

2MB Pin 2-3 ON

4MB Pin 2-3 ON (with 2M-08)

6MB Pin 2-3 ON (with 4M-08)

10MB Pin 2-3 ON (with 4M-08)

Recommended memory chips

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

Hitachi HM51258P-8 256Kx1 static column DRAM

NMB AAA2800P-07 256Kx1 static column DRAM

NMB AAA2800P-08 256Kx1 static column DRAM

Panasonic MN41256A-08 256Kx1 page mode DRAM (see note above)

Sharp LH21256-08 256Kx1 page mode DRAM (see note above)

NMB AAA2801P-06 256Kx1 page mode DRAM (see note above)

NMB AAA2801P-08 256Kx1 page mode DRAM (see note above)

M400C memory card:

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

The M400C memory card can hold 4MB or 8MB. It has an Austek cache

controller in the lower left corner. The M400C cannot accommodate either

of the memory expansion cards, as it has no connectors.

There are two jumpers on the M400C memory card. W1 is in the upper left

corner, and W3 is in the lower left corner. They should be set as follows:

W1 W3

4MB Pin 1-2 ON

8MB Pin 2-3 ON

Recommended memory chips

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

NEC D421000C-80 1Mx1 page mode DRAM

Motorola MCM511000P-85 1Mx1 page mode DRAM

Siemens HYB511000-70 1Mx1 page mode DRAM

Siemens HYB511000-85 1Mx1 page mode DRAM

Intel P21010-08 1Mx1 page mode DRAM

Samsung KM41C1000P-80 1Mx1 page mode DRAM

2M-08 memory expansion board:

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

The 2M-08 provides an additional 2MB, and is compatible with the M100, and

M100C memory cards. It is not compatible with the M200, the M300, or the

M400C. The 2M-08 comes populated, and has no jumpers or switches to set.

4M-08 memory expansion board:

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

The 4M-08 provides an additional 4MB (expandable to 8MB) for the M100, M200,

M300, and M100C memory cards. It is not compatible with the M400C. There

is a bank of four (4) switches on the card. The settings differ for each

of the main memory boards.

Recommended memory chips

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

Use the tables above for the 1Mx1 page mode DRAM used for the appropriate

main memory card.

With the M100:

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

S1 S2 S3 S4

6MB ON OFF OFF OFF

10MB ON OFF ON OFF

With the M200:

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

S1 S2 S3 S4

12MB OFF ON OFF OFF

16MB OFF ON ON OFF

With the M300:

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

S1 S2 S3 S4

10MB ON ON OFF OFF

14MB ON ON ON OFF

With the M100C:

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

S1 S2 S3 S4

6MB ON OFF OFF OFF

10MB ON OFF ON OFF