I don't know if this will help, but a search on google for UM4980 found an
online scan of the manual with the jumper settings, etc... I think the one
you want is http://members.home.net/pbuick/um4980/page8.htm
Regards,
-jq
----- Original Message -----
From: "Drew Hunt" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Tuesday, January 16, 2001 11:13 PM
Subject: Configuratin of a 486DX4 [was RE: Speed optimization for 486DX]
> I got really frustrated with not being able to answer questions because of
> how little I knew about the system, so I stripped it to the chasis and
> inspected every single number and every single pin on every single
> component. Low and behold, when i brought the motherboard out into the
> light - I'm still amazed it didn't combust or shrivel up - it had
> descriptors! Lots of 'em! Faded little things escaped notice under a
mere
> flashlight. So, with the help of my trusty magnifying glass, I have spent
> the last few hours blinding myself to document every aspect of the system
> for your review.
>
> Please, pay particular attention to the CPU settings on the motherboard
and
> tell me if they are correct as is or need to be modified. Also, what
about
> that first voltage setting on the motherboard (JP1)? Isn't something
> supposed to be jumpered there?
>
> Any suggestions are appreciated!
>
> Thanks,
>
> Drew
> [EMAIL PROTECTED]
>
>
> ** !!WARNING!! **
>
> The following is a list of component settings that is long, boring, and
> maybe even tedious. It is the stuff that separates the men from the boys;
> where newbies knash their teeth on the bones of slim pickings and
> enthusiasts gorge their bloodlust to make the inane possible and
rejuvenate
> a worthless pile of dusty circuit boards into a raging inferno of
computing
> power! Of course, if that particular drama doesn't appeal to you, then
> maybe you can help out a poor college kid and be the Hero of the Day.
>
> On to the Beast...
>
> **************************************************************
>
> 486 System notes
>
> A quick appendix:
> closed = jumpered = on
> open = no jumper = off
> 1-2 = jumper on pins 1 and 2
>
>
> POWER SUPPLY:
> LSI Switching Power Supply
> 230 Watts
> AC Input: 115/230V ~50/60Hz 6/3A
> DC Output:
> +5V -5V +12V -12V
> 23A 0.5A 9A 0.5A
>
> MOTHERBOARD:
> UM4980 v. 1.1
> AT form
> Socket 3
>
> Battery:
> Tadiran TL-5207/W 0193
> 3.6V High energy Lithium battery
> 4 pin connector - pin 2 filled
>
> Chipset:
> UMC UM8498F
>
> CPU:
> AMD 40486-DX4-120SV8B
>
> RAM:
> 256KB Data Cache RAM (8x8)
> 4 72-pin RAM banks
>
> BIOS:
> Phoenix MB 486 ISA BIOS ROM - A246308 ©1993
>
> Slots:
> 1 ISA
> 4 EISA
> 3 EISA - VESA
>
> Jumpers:
> 1: 3 pins
> Definition: Voltage setting
> JP1: 1-2 => +5V
> JP1: 2-3 => +12V
> Current Setting:
> no pins jumpered
>
> 2: 4 pins (pin 2 broken)
> Definition: Battery plug
>
> 3: could not locate
>
> 4, 5, 6, 10, 11, 12, 13:
> Definition: Cache Data RAM
> JP4 JP5 JP6 JP10 JP11 JP12 JP13
> 128KB (32k 8*4) 1-2 1-2 1-2 off off off off
> 256KB (64k 8*4) 1-2 1-2 off off off off on
> 256KB (32k 8*8) 2-3 2-3 2-3 off off off on
> 512KB (64k 8*8) 2-3 2-3 2-3 off on off on
> 512KB (128k 8*4) 1-2 2-3 2-3 1-2 on off on
> 1 MB (128k 8*8) 2-3 2-3 2-3 2-3 on on on
> Current Setting:
> 256KB (32k 8*8) 2-3 2-3 off off off off on
>
> 7, 8, 9:
> Definition: Motherboard Clock Speed
> JP7 JP8 JP9
> 25 on off off
> 33 on on on
> 40 on on off
> 50 off off on
> Current Setting:
> 40 on on off
>
> 14, 15, 16, 17, 18, 19:
> Definition: CPU setting
> JP14 JP15 JP16 JP17 JP18 JP19
> 486SX open 2-3 open open 2-3 open
> 486DX/DX2 open 1-2,3-4 1-2 open 2-3 open
> 486SX/SL 3-4,1-2 2-3 open 5-6 1-2 1-2
> 486DX/SL 1-2,3-4 1-2,3-4 1-2 5-6 1-2 1-2
> P24D 1-2,3-4 1-2,3-4 1-2 3-4,5-6 1-2,4-5 1-2,4-5
> P24T 1-2,3-4 1-2,3-4 2-3 5-6 1-2 1-2
> M6 2-3,4-5 2-3 open 2-3,4-5 1-2,3-4,5-6 1-2,3-4,5-6
> AMD486DXLT open 1-2,3-4 1-2,3-4 1-2 2-3 2-3
> P24C(DX4) 1-2,3-4 1-2,3-4 1-2 5-6 1-2 1-2
> U5 open 2-3 3-4 1-2 2-3 2-3
> M7 2-3 1-2,3-4 1-2 2-3,4-5 1-2,3-4,5-6 1-2,3-4,5-6
> Current Setting:
> 486DX/SL 1-2,3-4 1-2,3-4 1-2 5-6 1-2 1-2
> P24C(DX4)
>
> 20, 21, 22:
> Definition: Voltage Setting
> JP20 JP21 JP22
> 5V 1-2 1-2 open
> 3.45V 2-3 2-3 1-2
> 3.3V 2-3 2-3 2-3
> Current Setting:
> 3.3V 2-3 2-3 2-3
>
> 23: could not locate
>
> 24: 3 pins
> Definition: Clock Multiplier
> Open for "DX4" int clock 3X
> Closed for "DX4" int clock 2X
> Current Setting:
> Open for "DX4" int clock 3X
>
> 25:
> Definition: UNKNOWN
> Current Setting: closed
>
> 26:
> Definition: UNKNOWN
> Current Setting: closed
>
> 27:
> Definition: Suspend/Resume
> Current Setting: open
>
> 28:
> Definition: LED
>
> 29:
> Definition: Speaker
>
> 30:
> Definition: Reset
>
> 31:
> Definition: Turbo
> Current Setting: closed
>
> 32:
> Definition: Keylock
> Current Setting: open
>
> IDE CONTROL ADAPTER:
> GoldStar Prime 2C 9414 (EB52)
> FCC ID: JGBPRIME2C
> IDE interface
>
> Connectors:
> Parallel Port (25 pins - female)
> DB-9 Serial Port (9 pins - male)
> DB-25 Serial Port (25 pins - male)
> Game Port (?? pins - female)
>
> Connections:
> CON1: 16 pins (8x2)
> Definition: Game Bus
> Current Connected: none
>
> CON2: 10 pins (5x2)
> Definition: Serial Bus
> Current Connected: none
>
> CON3: 40 pins (20x2)
> Definition: IDE Bus
> Current Connected: one IDE drive
>
> CON4: 34 pins (17x2)
> Definition: FDD bus
> Current Connected: none
>
> CON5: 10 pins (5x2)
> Definition: Serial Bus
> Current Connected: one DB-9 serial port
>
> CON6: not located
>
> CON7: 2 pins
> Definition: UNKNOWN
> Current Setting: open
>
> Jumpers: all 3 pins - on/off unmarked, so assuming based on performance
> results
> J1: FDD ENA/DISA
> Current Setting: off
> J2: FDD Address
> Current Setting: on
> J3: IDE ENA/DISA
> Current Setting: on
> J4: IDE Address
> Current Setting: on
> J5: SIO0 ENA/DISA
> Current Setting: on
> J6: SIO0 Address
> Current Setting: on
> J7: SIO1 ENA/DISA
> Current Setting: on
> J8: SIO1 Address
> Current Setting: on
> J9: PRT ENA/DISA
> Current Setting: on
> J10: PRT Address
> Current Setting: on
> J11: Game ENA/DISA
> Current Setting: on
>
> SCSI CONTROL ADAPTER:
> Adaptec AHA-2840A/42A
> FCC ID: FGT2842A
> EIDE-VESA interface
>
> Connectors:
> External:
> SCSI-2 Connector (50 pins)
> Internal:
> SCSI-2 Connector (50 pins)
> FDD Connector (34 pins)
>
> Jumpers:
> J1: LED connections (4 pins)
> J2: FDD connector
> J3: SCSI-2 connector
> J4: Ext. SCSI-2 connector
> J5: UNKNOWN (2 pins)
> Current Setting: closed
>
> Switchs:
> 1, 2, 3, 4:
> Definition: I/O Port Settings
> I/O Port sw1 sw2 sw3 sw4
> 1C00H off off off off
> 2C00H on off off off
> 3C00H off on off off
> 4C00H on on off off
> 5C00H off off on off
> 6C00H on off on off
> 7C00H off on on off
> 8C00H on on on off
> 9C00H off off off on
> AC00H on off off on
> BC00H off on off on
> CC00H on on off on
> DC00H off off on on
> EC00H on off on on
> FC00H off on on on
> Reserved on on on on
> Current Setting:
> 1C00H off off off off
>
> 5:
> Definition: Enable/Disable Floppy
> on = Disable Floppy
> off = Enable Floppy
> Current Setting:
> on = Enable Floppy
>
> 6, 7:
> Definition: BIOS Address
> BIOS addr sw6 sw7
> D8000H off off
> C8000H on off
> D0000h off on
> E0000h on on
> Current Setting:
> D8000H off off
>
> 8:
> Definition: Enable/Disable BIOS Software Configuration
> on = BIOS disable
> off = BIOS enable
> Current Setting:
> off = BIOS enable
>
> VIDEO ADAPTER:
> Diamond Computer Systems Speedstar Pro VLB Rev. B2 ©1994
> FCC ID: FTUVL5426A
> EIDE-VESA interface
>
> Chipset:
> Cirrus Logic CL-GD5428-80QC-A
> ROM:
> Diamond Speedstar Pro v. 3.05 © 1993
>
> External Connector:
> VGA connector (15 pins - female)
>
> Jumpers:
> J1: UNKNOWN - 26 pins (13x2)
>
> J2-J10: not found
>
> J11: IRQ2
> Current Setting: closed
>
> ETHERNET ADAPTER:
> 3Com EtherLink III 3C509B-TP ©1995
> ASSY 03-0021-203 REV-A
> FCC ID: DF63C509B
> EIDE interface
> 10 MB/s signalling rate
>
> Chipset:
> Lucent 40-01304 (40-0130-004)
>
> External Connectors:
> AUP ethernet connector (15 pins)
> 10-base-T ethernet connector (8 pin plug)
>
> Jumpers: none
>
> DRIVES:
> FDD:
> Teac FD-235-HF
> P/N: 19307762-40
>
> Jumpers:
> DS0:
> Definintion: UNKNOWN
> Current Setting: open
>
> DS1:
> Definition: UNKNOWN
> Current Setting: closed
>
> IDE:
> Samsung WN312021A 1.2 GB
>
> Specifications:
> Cylinders: 2340
> Heads: 16
> Sectors: 63
> Size: 1.2 GB
>
> Jumpers:
> DXX:
> Definition: UNKNOWN
> Current Setting: open
>
> DCF:
> Definition: UNKNOWN
> Current Setting: open
>
> CSEL:
> Definition: Set Drive to Cable Select
> Current Setting: open
>
> C/D:
> Definition: Set Drive as Master
> Current Setting: closed
>
> (Slave mode set by all open connections)
>
> SCSI:
> Seagate ST51080N 1.5GB?
> no drive information available through external inspection
>
> DEVICE TREE:
>
> (excludes power supply)
>
> Motherboard--------------------------Battery
> \
> \_____________________________Ethernet Adapter
> \
> \____________________________Video Adapter
> \
> \___________________________IDE Adapter
> \ \________IDE
Harddrive
> \
> \_________________________SCSI Adapter
> \________Floppy
Drive
> \
> \______SCSI Drive
>
> *********************************************************
>
>
>
>
> _______________________________________________
> Redhat-list mailing list
> [EMAIL PROTECTED]
> https://listman.redhat.com/mailman/listinfo/redhat-list
>
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