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Apricot Trent Motherboard

Trent Motherboard Diagram

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.

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 60ns is the specification. The newer Extended Data Output (EDO) type SIMMs are supported and will give enhanced performance.

Socket Location

RAM Sockets Location


Adding RAM is the most cost effective way to boost your computer's performance.


Processor Upgrades (MS540 MM Models)

The processor upgrade section is split into two.This first section covers MS540 models with the prefix MM.The second section covers MS660 models with the prefix code MF.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.

MS540 (MM) Processor upgrades
  
Processor type and speedIs it supported?
  
Pentium 120YES (set speed jumpers)
Pentium 133YES (set speed jumpers)
Pentium 150YES (set speed jumpers)
Pentium 166YES (set speed jumpers)
Pentium 200YES (set speed jumpers)
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)


MS540 (MM) Motherboard Processor Speed Jumper Settings

Processor SpeedJumper Block PL32
BF0BF1FS1FS0ISA
Pentium 100 MHz *** note ***2-41-37-8-11-12
Pentium 120 MHz4-61-3-9-1011-12
Pentium 133 MHz4-61-37-8-11-12
Pentium 150 MHz4-63-5-9-1011-12
Pentium 166 MHz4-63-57-8-11-12
Pentium 200 MHz2-43-57-8-11-12

Note:- If you have BIOS version 7.07 or above installed then this setting is for Pentium 233Mhz.

Warning: The Trent motherboard that is found in the MS540 (MM) runs the processor at 3.3volts. Pentium MMX processors require the processor to run at 2.8volts (see note below regarding Overdrive processors). If a Pentium MMX processor is run at 3.3volts, it will be severely damaged. Intel Pentium Overdrive processors have their own voltage regulation onboard and therefore no motherboard modifications are required.

Processor Upgrades (MS660 MF Models)

This is the processor upgrade page for MS660 with the model number prefix MF.
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.


MS660 (MF) Processor upgrades
  
Processor type and speed      Is it supported?
  
Pentium 166 MMXYES - Set speed jumpers correctly
Pentium 200 MMXYES - Set speed jumpers correctly
Pentium 233 MMXYES - Set speed jumpers correctly


MS660 (MF) Motherboard Processor Speed Jumper Settings

Processor SpeedJumper Block PL32
BF0BF1FS1FS0ISA
Pentium 100 MHz *** note ***2-41-37-8-11-12
Pentium 120 MHz4-61-3-9-1011-12
Pentium 133 MHz4-61-37-8-11-12
Pentium 150 MHz4-63-5-9-1011-12
Pentium 166 MHz4-63-57-8-11-12
Pentium 200 MHz2-43-57-8-11-12

Note:- If you have BIOS version 7.07 or above installed then this setting is for Pentium 233Mhz.

BIOS Upgrade

For MM (MS540) and MF (MS660) model machines, the latest version of the BIOS is 7.08.

BIOS Installation Instructions

Once the BIOS update file has been downloaded & saved 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\TRENT708.EXE A:
When the boot disk has been created, restart the computer and boot from the diskette.
When the BIOS update has completed, remove the diskette and restart the computer.

Cache

Cannot be Upgraded

Video RAM

Models that came with the ATi MACH 264 VT - 1MB EDO CARD can be upgraded to 2MB.The rest cannot be upgraded.

Jumper Settings

PL8 Clearing CMOS
  
1-2   CMOS Battery connected (default)
2-3CMOS battery disconnected


PL10 BIOS Image Selection
  
1-2   Boot using normal BIOS (default)
2-3Boot using recovery BIOS


PL11 BIOS Reprogram
  
1-2   Enabled (default)
2-3Disabled


Floppy Disk Control Mode
  
PL22   Default position link pins 3-4.
3-mode operation, link 1-3, 2-4.


System Fan
  
PL36   System fan, slow mode
PL37System fan, full speed mode


Sound Blaster Enable
  
PL100   Near CD audio connector. Link pins 1-2 (default)


Onboard Video Enable
  
Jumper Block PL32, jumper pair marked 'VGA'     Link pins to enable onboard Video (default)


System Connectors
 
PL2   1-2Left stereo speaker
 5-6Right stereo speaker
PL41-2System standby restore switch
 3-7Infra-red controller
 8-11Mono speaker
 12-13   Message LED
PL61-4HDD active light
 5-9Keylock (not fitted)
 10-11System in 'power standby' light
 12-13System hardware reset (not fitted)

Rear Panel

Desktop Case - Rear View

1 - Casing Screws7 - Mouse Port13 - Blanking plates
2 - AC Power Intlet8 - Serial Port 114 - Optional Audio daughterboard
3 - Voltage selection switch    9 - Serial Port 215 - Security loop
4 - AC Power Outtlet10 - Parallel Port    16 - System unit case lock
5 - Universal Serial Port11 - Video Port 
6 - Keyboard Port12 - Air vents 

CMOS Discharge

PL8Clearing CMOS
 
1-2   CMOS Battery connected (default)
2-3CMOS battery disconnected


To enter the CMOS Setup screens press F1 setup during POST.

BIOS Main Screen

System Summary Screen

Product Data Screen

Devices and IO Ports Screen

Video Setup Screen

IDE Device Setup Screen

Hard Disk Drive 0 Screen

Date and Time Screen

System Security Screen

Power on Password Screen

Administrator Password Screen

Start Options Screen

Advanced Setup Screen

Cache Control Screen

ROM Shadowing Screen

PCI Options Screen

Plug and Play Screen

Memory Resources Screen

IO Port Resources Screen

DMA Resources Screen

Interrupt Resources Screen

Error Log Screen

Power Management Screen

Secure Hard Drives and Dirskette Drives Screen

Anti Theft Device Screen

Error Messages

CodeCauses
  
101Timer tick interrupt failure
102Timer 2 test failure
106Diskette controller failure
110System Board Memory Parity interrupt
114Option ROM checksum failure
151Real time clock failure
161Real time clock battery failure
162CMOS RAM checksum failue
162Invalid configuration information
163Time of day not set -preboot
164Memory size does not match CMOS
175Bad EEPROM CRC #1
176System tampered
177Bad PAP checksum
178 EEPROM is not functional
183PAP Update Required
184Bad POP checksum
185Corrupted Boot Sequence
186Hardware problem
189Excessive password attempts
201Base memory error
229External cache failure
301Keyboard clock line failure
301Keyboard data line failure
301Keyboard stuck key failure
604Diskette drive 0 failure
604Diskette drive 1 failure
605Diskette unlocked problem
662Diskette drive configuration
762Coprocessor configuration
1762Hard disk configuration
1780Fixed disk 0 failure
1781Fixed disk 1 failure
1782Fixed disk 2 failure
1783Fixed disk 3 failure
1800No more IRQ available
1801No more room for option ROM
1802No more I/O space available
1803No more memory (< 1MB) available
1804No more memory (> 1MB) available
1805Checksum error or 0 size option ROM
1962No bootable device
2400         Display adapter failed; usingalternate
2462Video configuration

I/O Ports

I/O ports (Hex)Used by
  
000 - 01FDMA controller 1
020 - 021Interrupt controller 1
022 - 023ALI configuration port
034, 038, 03CLocal bus ATA/IDE (alternate)
040 - 05FSystem timer
060 - 06FKeyboard controller
070 - 07FReal time clock,NMI mask
080 - 09FDMA page register
0A0 - 0A1Interrupt controller 2
0B4, 0B8, 0BCLocal bus ATA/IDE (default)
0C0 - 0DFDMA controller 2
0F0, 0F1Math coprocessor busy (clear/reset)
0F8 - 0FFMath coprocessor
1F0 - 1F7Hard disk drive controller
200 - 207Game I/O
220 - 22F, 230 - 233         Sound blaster system
240 - 24F, 250 - 253Alternate Sound blaster system
278 - 27FParallel port 2
2B0 - 2DFAlternate VGA
2F8 - 2FFSerial port 2
300 - 301Alternate MIDI (disable)
330 - 331MIDI
378 - 37FParallel port 1
388 - 38FFM synthesiser
3B0 - 3BFMonochrome display and printer adapter
3B4, 3B5, 3BAVideo subsystem
3C0 - 3C5VGA
3C6 - 3C9Video DAC
3CA - 3DFVGA
3F0 - 3F7Diskette drive controller
3F8 - 3FFSerial port 1