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Diamond Motherboard


Diamond Motherboard Diagram

Cache SIMM Socket

If your computer came without any cache fitted you can install a 256Kb module of either of the following types:-

256KB ASYNC CACHE MODULE

256KB 55MHz PIPELINED SYNC

If you have a 75MHz motherboard it will not have a cache SIMM, due to the performance benefits of EDO RAM. If you upgrade the processor at a later date you may require a cache upgrade to improve performance further.

Video RAM

If your machine came with 1MB video RAM then it can be upgraded as follows (depending on your Video Card) -

GD5434 1MB to 2MB Video RAM Upgrade

GD5436 1MB to 2MB Video RAM Upgrade

If your machine came with 2MB already installed then it cannot be upgraded further.

RAM Configuration

The SIMM sockets are located at the front of the motherboard. Each pair of sockets can be fitted with SIMMs. SIMMs with capacities of 2, 4, 8, 16 or 32 Mbytes are supported, giving a maximum capacity of 128 Mbytes.

Socket Location

RAM Socket Location

SIMMs must be fitted in pairs and the pair must be identical. The system does not require Parity checking (36-bit) SIMMs. Conventional 32-bit SIMMs with a refresh rate of 70ns is the specification. The newer Extended Data Output (EDO) type SIMMs are supported and will give enhanced performance.

Possible SIMM Memory Combinations

Total Memory

Bank 0

Bank 1

Bank 2

Bank 3

8 Mb

4 Mb

4 Mb

-

-

12 Mb

4 Mb

4 Mb

2 Mb

2 Mb

16 Mb

4 Mb

4 Mb

4 Mb

4 Mb

16 Mb

8 Mb

8 Mb

-

-

20 Mb

8 Mb

8 Mb

2 Mb

2 Mb

24 Mb

8 Mb

8 Mb

4 Mb

4 Mb

32 Mb

8 Mb

8 Mb

8 Mb

8 Mb

32 Mb

16 Mb

16 Mb

-

-

36 Mb

16 Mb

16 Mb

2 Mb

2 Mb

40 Mb

16 Mb

16 Mb

4 Mb

4 Mb

48 Mb

16 Mb

16 Mb

8 Mb

8 Mb

64 Mb

16 Mb

16 Mb

16 Mb

16 Mb

64 Mb

32 Mb

32 Mb

-

-

68 Mb

32 Mb

32 Mb

2 Mb

2 Mb

72 Mb

32 Mb

32 Mb

4 Mb

4 Mb

80 Mb

32 Mb

32 Mb

8 Mb

8 Mb

96 Mb

32 Mb

32 Mb

16 Mb

16 Mb

128 Mb

32 Mb

32 Mb

32 Mb

32 Mb

Note: MS530 has only Banks 0 & 1 available for memory expansion.

Processor Upgrade

These are is the processor upgrades for MS530's and MS540's with the model number prefixes MK or MT. To use the tables below, select the processor you wish to upgrade to and confirm that the upgrade is possible. Then check additional requirements such as BIOS upgrades & processor speed jumper settings.

Warning

DO NOT alter these links unless you are upgrading the processor as it could lead to the destruction of the processor and/or other vital components on the board

MS530 (MK) & MS540 (MT) Processor upgrades
Processor type and speed Is it supported?
Pentium 120 YES (set speed jumpers)
Pentium 133 YES (set speed jumpers)
Pentium 150 YES (set speed jumpers)
Pentium 166 YES (set speed jumpers and upgrade BIOS)
Pentium 200 YES (set speed jumpers and upgrade BIOS)
Pentium 166 MMX NO (no motherboard support for full 2.8volt MMX processor)
Pentium 200 MMX NO (no motherboard support for full 2.8volt MMX processor)
Pentium 233 MMX NO (no motherboard support for full 2.8volt MMX processor)
Pentium Overdrive 166 MMX (BPODPMT66X166).
Will run at 100mhz or 133Mhz.		 YES (upgrade BIOS then set speed jumpers to 100mhz or 133mhz)
Pentium Overdrive 180 MMX (BPODPMT60X180).
Will run at 75, 90, 120 & 150Mhz.		 YES (upgrade BIOS then set speed jumpers to 75, 90, 120 or 133mhz)
Pentium Overdrive 200 MMX (BPODPMT66X200).
Will run at 100, 133 & 166Mhz.		 YES (upgrade BIOS then set speed jumpers to 100, 133 or 166mhz)


Processor and BUS clock
Processor Speed PL17 SW1, || = Link, : = No link ISA (MHz)
Pentium P 75 VRE Pin 1 || || : : : : : : 8.33
P 90 VRE Pin 1 : || : : || : : : 7.5
P 100 VRE Pin 1 || : : : || : : : 8.33
P 120 VRE Pin 1 : || || : || : : : 7.5
P 133 VRE Pin 1 || : || : || : : : 8.33
P 150 VRE Pin 1 : || || || || : : : 7.5
P 166 VRE Pin 1 || : || || || : : : 8.33
P 200 VRE Pin 1 || : : || || : : : 8.33 (5-07 BIOS or greater)

BIOS Upgrade

For MK (MS530) and MT (MS540) model machines, the latest version of the BIOS is 5.09, which you can Download Here.

BIOS Installation Instructions

Once the BIOS update file has been downloaded & saved in your C:\WINDOWS\TEMP folder:

Click on START
Click on RUN
Type in c:\windows\temp\D509COMB.EXE
Press RETURN, then click on UNZIP (this will create three files in your C:\WINDOWS\TEMP folder).
Place a blank formatted disk into the floppy drive A:
Click on START
Click on RUN
Type C:\WINDOWS\TEMP\IMAGE 509BIOS.IMG A: /M /B
When the boot disk has been created, restart the computer and boot from the diskette. From the menu press 1 to detect the type of video controller, and then press 2 or 3 to upgrade the BIOS for your type of video controller.

Jumper Settings

Internal speaker operation

Next to outer SIMM socket, default position link pins 4 and 5 gives audio output to the internal speaker in mono. Only to be removed in a system having internal stereo speakers.

PL2 Stereo: L Cable = 1, 2 R Cable = 5, 6.
  Mono: Cable = 2, 3. Jumper = 4, 5.

Internal 'audio' modem

Just along from the CD audio connection, default position if no internal modem is fitted, link pins 3 and 4. Remove only when fitting an internal modem supporting sound.

PL4 Modem absent = 3, 4.
  Modem present = no jumper

BIOS reprogramme

These links are for special purposes. Only to be used for an official upgrade to the system BIOS. DO NOT move for any other reason.

PL5 Reserved. Do not change from 2, 3.
PL6 Flash Program.
  Enable = 1, 2. Disable = 2, 3.

Floppy disk control mode

Next to floppy disk ribbon connector, default position link pins 3 and 4.

PL13 2 mode = Jumper PL13
  3 mode = Jumper PL13

Clear BIOS settings

Next to outer video upgrade socket, default position linkpins 1 and 2. Moving the link to pins 2 and 3 disconnects the battery from the BIOS memory, and will cause all the user settings to be lost. To be used with caution and only in the event of an access password being lost.

PL21 Normal = 1, 2. Clear = 2, 3.

Video / VESA option

A single jumper may be the only one fitted, at the end nearest PL21. Only needs to be removed if fitting a new high feature 'plug-in' video card and serious problems are encountered. If taken out, it must be replaced if the extra video card is subsequently removed.

PL22 Video enabled, do not alter.

Sound Blaster Address

IC12 Near CD audio connector. Default position, link rear pins, sets the on-board Sound Blaster to address 220h. Removing the link changes the address to 240h

PL24, PL28

Jumpers PL24 / PL28 Location

This range of pins is not exactly for jumpers, but is used to connect various features around the system case to the motherboard.

PL24, PL28 Pinouts

PL24 Pins 1 to 4 HDD active light
    5 to 9 Keylock (not fitted)
    10 & 11 System in 'power standby' light
    12 & 13 System hardware reset (not fitted)
PL28 Pins 1 & 2 System standby restore switch
    3 to 7 Infrared controller
    8,9,10 Fan, slow mode
    11,12,13 Fan, full speed mode
    14 to 17 Internal speaker (only when no audio fitted to motherboard)

Rear Panel

Desktop Case Rear View

1 - AC Power Inlet 5 - Keyboard Port 9 - Parallel Port
2 - AC Power Outlet 6 - Mouse Port 10 - Video Port
3 - System Security Loop 7 - Serial Port 1  
4 - Audio Ports 8 - Serial Port 2  

Expansion Slots

Expansion Slots Location

Clear BIOS Settings / CMOS Discharge

To clear the BIOS. you need to move jumper PL21, which is situated next to outer video upgrade socket. By default the jumper should be set to 1-2.

Moving the link to pins 2 and 3 disconnects the battery from the BIOS memory, and will cause all the user settings to be lost. To be used with caution and only in the event of an access password being lost.

PL21 Normal = 1, 2. Clear = 2, 3.

 

Bootup Screen

When this appears in the top right of the screen press the F1 on the keyboard and in a few seconds you will be presented with the BIOS setup screen see below)

Configuration / Setup Utility

BIOS Main Screen

 

System Summary Screen

 

Devices and IO Ports Screen

 

IDE Drives Setup Screen

 

Hard Disk Drive 0 Screen

 

Date and Time Screen

 

System Security Screen

 

Secure Hard Disk Drives and Diskette Drives Screen

 

Power-on Password Screen

 

Administrator Password Screen

 

Start Options Screen

 

Advanced Setup Screen

 

Cache Control Screen

 

ROM Shadowing Screen

 

ISA Legacy Resources Screen

 

Memory Resources Screen

 

IO Port Resources Screen 

 

DMA Resources Screen

 

Interrupt Resources Screen

 

Power Management Screen

 

Save Settings Screen

 

Restore Settings Screen

 

Load Default Settings Screen

Interrupts, Memory & I/O Ports

Interrupts (IRQ)

Interrupts

Default Function

 Available ?

IRQ 0

System timer

 No

IRQ 1

Keyboard

 No

IRQ 2

Cascade

 No

IRQ 3

Serial port 2

 Optionally

IRQ 4

Serial port 1

 Optionally

IRQ 5

Audio (if fitted)

 Yes

IRQ 6

Diskette controller

 No

IRQ 7

Parallel port

 Optionally

IRQ 8

Real time clock

 No

IRQ 9

Not used

 Yes

IRQ 10

Not used

 Yes

IRQ 11

Not used

 Yes

IRQ 12

Mouse

 No

IRQ 13

Co processor

 No

IRQ 14

Primary ATA/IDE interface

 No

IRQ 15

Secondary ATA/IDE interface

 No

I/O Ports

I/O ports (Hex)

 Used by

000 - 01F

 DMA controller 1

020 - 021

 Interrupt controller 1

022 - 023

 ALI configuration port

034, 038, 03C

 Local bus ATA/IDE (alternate)

040 - 05F

 System timer

060 - 06F

 Keyboard controller

070 - 07F

 Real time clock,NMI mask

080 - 09F

 DMA page register

0A0 - 0A1

 Interrupt controller 2

0B4, 0B8, 0BC

 Local bus ATA/IDE (default)

0C0 - 0DF

 DMA controller 2

0F0, 0F1

 Math coprocessor busy (clear/reset)

0F8 - 0FF

 Math coprocessor

1F0 - 1F7

 Hard disk drive controller

200 - 207

 Game I/O

278 - 27F

 Parallel port 2

2B0 - 2DF

 Alternate VGA

2F8 - 2FF

 Serial port 2

378 - 37F

 Parallel port 1

3B0 - 3BF

 Monochrome display and printer adapter

3B4, 3B5, 3BA

 Video subsystem

3C0 - 3C5

 VGA

3C6 - 3C9

 Video DAC

3CA - 3DF

 VGA

3F0 - 3F7

 Diskette drive controller

3F8 - 3FF

 Serial port 1

 Direct memory access (DMA) channel

DMA

Default Function

 Available ?

DMA 0

   Yes

DMA 1

8-bit Audio

 Optionally

DMA 2

Diskette Controller

 No

DMA 3

Enhanced Capabilities Port

 Optionally

DMA 4

System

 No

DMA 5

16-bit Audio

 Optionally

DMA 6

   Yes

DMA 7

   Yes

Error Codes

Code

 Causes

101

 Timer tick interrupt failure

102

 Timer 2 test failure

106

 Diskette controller failure

110

 System Board Memory Parity interrupt

114

 Option ROM checksum failure

151

 Real time clock failure

161

 Real time clock battery failure

162

 CMOS RAM checksum failue

162

 Invalid configuration information

163

 Time of day not set -preboot

164

 Memory size does not match CMOS

175

 Bad EEPROM CRC #1

176

 System tampered

177

 Bad PAP checksum

178

 EEPROM is not functional

183

 PAP Update Required

184

 Bad POP checksum

185

 Corrupted Boot Sequence

186

 Hardware problem

189

 Excessive password attempts

201

 Base memory error

229

 External cache failure

303

 Keyboard controller failure

301

 Keyboard failure

301

 Keyboard clock line failure

301

 Keyboard data line failure

301

 Keyboard stuck key failure

604

 Diskette drive 0 failure

604

 Diskette drive 1 failure

605

 Diskette unlocked problem

662

 Diskette drive configuration

762

 Coprocessor configuration

1762

 Hard disk configuration

1780

 Fixed disk 0 failure

1781

 Fixed disk 1 failure

1782

 Fixed disk 2 failure

1783

 Fixed disk 3 failure

1800

 No more IRQ available

1801

 No more room for option ROM

1802

 No more I/O space available

1803

 No more memory (< 1MB) available

1804

 No more memory (> 1MB) available

1805

 Checksum error or 0 size option ROM

1962

 No bootable device

2400

 Display adapter failed; using alternate

2462

 Video configuration

5962

 IDE CD-ROM configuration

8603

 Pointer device has been removed