Elpina motherboards

[Bazango]

I would like to join the parade of people looking for data on these MBs. Mine is an Elpina-2 with an Intel VX chip set and a 7 socket. It has no CPU and cannot be booted up. Elpinas are made by Ability MBs at www.ability-tw.com, but they do not respond to my E-mail.

[ian]

elpina board vx pro. In corner next to keyboard socket v5.1A supports intel p55c,cyrix m2 and amdk6. Speeds 75/90/100/120/133/166/180/200/233 pentium with 321 pin zif socket. chips p54c,p55c,cyrix6x86,m2,ibm6x86, and amd k5/k6 cpu'scpu core switchable 2.5 to3.5v. memory 4x72 pin edo/page mode simm modules auto banking in multiple config up to 256 mb. 2x168 pin dimm to support sdram/edo dram/page mode dram, supports "table free"config so that dimm and simm can be installed in any combinations excepting that simm 1,2 and dimm 2 cannot be installed at the same time, supports up to 384 mb through simm /dimm config. supports 512k onboard pipelined burst syncronous cache. three isa and four pci slots all pci slots support master mode.system bios supports 4 ide hard drives without device driver for s/w application each can be over528 and up to 8.4gb. onboard pci bus master ide interface with two connectors, supports 4 devices in 2 channels and the pci ide controller, supports pio mode 0 to 4 at maximum transfer rate of 16.67mb/s and bus master ide dma mode 2.onboard super multi i/o chip that supports 2 serial ports with 16550 fast uart compatible, 1 parallel port with epp and ecp capabilities, and 1 floppy disk drive interface,supports ps/2 mouse, supports usb, system bios supports ncr810 scsi bios firmware, green feature function, plug and play flash rom.
the above from the back of board manual.
in all of the following the bottom refers to the the board edge with socket 7 the top the keyboard connector.
jp1 (next to the battery ) 123 top to bottom 1 and 2 = normal ,3and 3 = clear cmos
jp2 (next to dimm socket ) pin 1 marked top right also marked a,b left to right on bottom pin 1and 2 on a and 1 and 2 on b = 5 volt (simm ) memory pin 2 and 3 on a and 2 and 3 on b = 3.3 volt ( simm memory )
jp3 below simm slots. 3 columns a,b,c, pin 1 top cpu speed setting. 50mhz = pins 2 and 3 on a,b and c. 55mhz = pin 1 and 2 on a pin 2 and 3 on both b and c. 60mhz = pin 2 and 3 on a and b pin 1 and 2 on c. 66mhz = pni 2 and 3 on a and c pin 1 and 2 on b. 75mhz = pin 1 and 2 on a and c pin 2 and 3 on b.
jp5 two columns a and b above bios chip pin 1 at top. cpu internal clock speed setting.
1.5x = pin 1 and 2 on both a and b ( noted amd k5 1.5x/k6 3.5x)
2.0x pin 2 and 3 on a pin 1 and 2 on b.(noted cyrix 2.0x )
2.5x pin 2 and 3 on both a and b.(noted cyrix m2 2.5 amd k5 2.5x )
3.0x pin 1 and 2 on a pin 2 and 3 on b. (noted cyrix m2 3.0x amd k6 3.0x)
jp6 4 columns of 2 pins marked from left a,b,c d located above bios chip all 1 top 2 bottom cpu voltage regulator output (core voltage ) 3.5v = a. 3.2v = b. 2.9v = c. 2.8v = d. 2.5v = none. in all but last case connect 1 and 2 in stated column.
jp9 located at the end of inner isa slot near cpu socket pin 1 is on the right 2 rows a top b bottom. row a pin count right to left 1,2,3. row b same to avoid confusion
a321
b321
pin 1 and 2 on both a and b =p55c dual voltage (example noted intel mmx, amd k6,ibm/cyrix 6x86l, m2 )
pin 2 and 3 on both a and b =p54c single voltage (example noted intel p54c, amd k5, ibm/cyrix 6x86.
j1 keyboard connector standard five pin female din pin 1 = keyboard clock .pin 2 = keyboard data, pin3 n.c. pin 4 = groundpin 5 = +5vdc (listed so i included it )
j3 located board edge next to bios all connections are printed on board
pins : from top key lock pin1= led output,pin 2= n.c. pin3= ground. pin4= keylock. pin5= ground. next down speaker pin1= speaker out. pin2= ground. pin3= ground. pin4= +5vdc.next down 2 pins open=normal, short= system reset.next down 2 pins hdd-led pin 1= anode(+). pin 2= cathode(-),ground.next 2 tb-led pins pin 1 anode. pin 2 cathode/ground. last 2 pins tb-sw ( not defined open = turbo ?)
ir1 located between pci slots (battery end) pin 1 to 4 top to bottom pin 1= ir in, pin2 ground, pin3= ir out, pin4=+5vdc.
usb1: 2 sets of universal serial bus connector located between isa slots (battery end) 2 columns left column top to bottom pin1,3,5,7,9. right column pin 2,4,6,8,10. pins 1and 2=+5vdc. pins 3 and 4=data-.pins 5 and 6=data+.pins 7,8,9 and 10= ground. ps/2 mouse connector located near keyboard socket. jp4 located end of isa slot 1 (outer ) pin1 top pin 1 and 2 12volt flash programming, pin2 and 3 5 volt flash programming ( can anyone explain this to me please, i've only heard of flash programming from a floppy ? ) no other info on this jumper, I was given the board this was set to 12volt. the board was screwing up the previous owner was using simm's but I found the board set to 3.3 volt memory ,simm's should be 5volt could this have been the cause of the crashes?.
all of the info was taken from the manual supplied with the board titled 586mmx I hope it's what your looking for. any confusion drop me a line, I shall help if I can (note I generally only log on at weekends so dont hold your breath !)

[Bazango]

Wow! I hope this is what I was looking for too. Was your board labeled Elpina-2 on the back or was it the manual that was labeled 586mmx? Also, my board has only one bank for the 168 pin DIMM. The rest of it is so right on that I'm tempted to treat it as gospel. Thanks, I'll look forward to next weekend.

[ian]

the manual is titled " 586mmx new generation vx pro chipset pci bus and isa bus"your board sounds a bit different mine has 4 x 72 pin simm and 2 x 168 pin dimm 3x isa and 4 x pci the award bios label has the date as 1995 also "pci/pnp 586" sorry about the typo the 3.3 volt should be for the dimm memory

[Bazango]

I think I understand that you have the manual and not the board. Did you get the manual on line? Is it a public source? This is still the best info I've got yet unless I glossed over some other postings for the Elpina MBs.

I leave it for someone to clue me in exactly on the Elpina-2 motherboard. This is a Socket 7 machine with the Intel VX chipset.

[ian]

i have both the board and manual but as yet no cpu i tried to scan the manual for you but i've only a hand scanner i use for small pictures i tried the stitch (which i've not used before ) this proved poor to say the least a friend has an a4 scanner i shall try to get the pages scanned on that and you can have the lot bmp ok? my board only has elpina etched underneath not elpina2 the only other info is on a sticker on the outer isa slot. If your machine is a bit short on space let me know and i shall split up the scans as best i can and keep the res down but the higher the better so let me know what space you can use and i shall try to keep to that

[Bazango]

ian! Check out www.amptron.com and look to see if the photographs of any of the Intel VX chipset boards match your board exactly. The PM7900 looks exactly like mine. I am going to go back with data from my board to confirm the match, but I am pretty confident that this is my board.

There are manuals there too, though they are not all downloadable.

[This message has been edited by Bazango (edited 03-13-99).]

[ian]

hi baz thanks for the link I checked out amptron they are all different to mine the nearest is the pm 8700 my chipset is vx pro but not intel mine has the built in voltage regulator as well whereas the 7900 needs this as an add on if you go with the 7900 data please let me know how you get on best of luck Ian

[Bazango]

It's definitely the PM-7900, sorry you couldn't find a match at Amptron. Thanks for your help. See a new Elpina thread to see how I came to the Amptron site.