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RE: Working with tsop flash
by Nick Jarmany 29 Sep '03

29 Sep '03

Kevin, In my experience of this type of SMD work, the most critcical issue is preserving the pads on the motherboard. Usually attempts to desolder parts whilst preserving them for re-use generally result in damage/weakening of the PCB. To prevent this the best way is to sacrifice the soldered on part, minimising heat damage to the PCB. Use a sharp scalpel and with a controlled hand and steady force, run the pount of the blade over the chip pins along the line where they meet the chip body. Repeating this multiple times will eventually result in the chip legs becoming severed without any undue stress having been applied. Repeat this process with the other side and lift the chip body clear. Now you are left with two rows of renundant pins! Use a hot iron with a broad tip and a good deal of solder. Put the iron on the pins and quicky apply solder. While feeding in solder, move iron over balance of the pins. With the whole lot molten you should be able to wipe off all the junk easily and quickly. The trick is speed - do not hesitate or loiter on anything for more than a second. Use plenty of solder and drag the "heap" quickly off the end. The surface tension of the ball of molten solder will bring everything with it, including any solder bridges between pads. If after this you still have some shorts, use more solder and remove by dragging a ball of molten solder steadily over the pads, adding fresh solder to the ball as you go. The best way to remove solder is with more solder! The mistake many people make with close-pitch SMD components is to use micro sized iron tips and spend ages on individual pins under microscopes. The best tactic is actually the reverse - large tip (good heat transfer), lots of solder and deal with all the pins in one operation. Our production staff can hand solder a 100-pin PQFP in under 5 seconds this way, with no shorts! Using this technique should give you the best chance of undamaged pads onto which you can solder your socket/emulator. Good luck! Nick > -----Original Message----- > From: linuxbios-admin(a)clustermatic.org > [mailto:linuxbios-admin@clustermatic.org]On Behalf Of Kevin O'Connor > Sent: 27 September 2003 06:33 > To: linuxbios(a)clustermatic.org > Subject: Working with tsop flash > > > Hi, > > I have a motherboard that I would like to get linuxbios working on. > Unfortunately, it has a TSOP flash part that is soldered > directly onto it. > I am concerned that if I write to the flash I may turn the unit into a > "brick". > > Has anyone had any experience with removing a surface mounted > flash TSOP > part, and replacing it with a ZIF socket? If I understand it > correctly, I > should be able to heat up the leads of the current flash (melting the > existing solder), extract the flash part, then solder on a zif socket > (http://www.emulation.com/catalog/off-the-shelf_solutions/sock ets/tsop/), and then finally use an eprom programmer on the existing tsop flash chip if it ever gets flashed incorrectly. Is this correct - anyone here done this before? Is this procedure very tricky (can one new to soldering expect to succeed at it)? Any advice would be appreciated, -Kevin -- ------------------------------------------------------------------------ | Kevin O'Connor "BTW, IMHO we need a FAQ for | | kevin(a)koconnor.net 'IMHO', 'FAQ', 'BTW', etc. !" | ------------------------------------------------------------------------ _______________________________________________ Linuxbios mailing list Linuxbios(a)clustermatic.org http://www.clustermatic.org/mailman/listinfo/linuxbios

1 0

Outstanding problems on K7SEM, EPIA and EPIA-M
by Andrew Ip 28 Sep '03

28 Sep '03

Hi, Would someone help me to fill these information in? Board Problem Solution K7SEM ECC code problem Add an option to disable ecc support EPIA ?? EPIA-M DDR setup Add SPD detection code -Andrew -- Andrew Ip Email: aip(a)cwlinux.com Tel: (852) 2542 2046 Fax: (852) 2542 2036 Mobile: (852) 9201 9866 Cwlinux Limited Unit 202B 2/F Lai Cheong Factory Building, 479-479A Castle Peak Road, Lai Chi Kok, Kowloon, Hong Kong. For public pgp key, please obtain it from http://www.keyserver.net/en.

3 2

sis740
by Andre Dias 28 Sep '03

28 Sep '03

K7SEM is sis730, in fact is a clone of M810LMR Elitegroup, Asrock and Pcchips are the same company. Btw, I use K7SEM with linuxbios and its OK (except by the keyboard idle sometimes) ======================== Andre Dias Gerente Ponto-i Equipamentos e Serviços www.ponto-i.net -----Mensagem original----- De: linuxbios-admin(a)clustermatic.org [mailto:linuxbios-admin@clustermatic.org] Em nome de David Hendricks Enviada em: sábado, 27 de setembro de 2003 01:15 Para: linuxbios(a)clustermatic.org Assunto: Re: sis740 IIRC, the Elitegroup K7SEM is supported. On Fri, 26 Sep 2003 20:01:35 -0300 "Andre Dias" <aod(a)ponto-i.net> wrote: > Has anyone tried using linuxbios with SiS740/SiS962L chipset? (eg, > pcchips new m810dlu series) > > > ======================== > Andre Dias > Gerente > Ponto-i Equipamentos e Serviços > www.ponto-i.net > > _______________________________________________ Linuxbios mailing list Linuxbios(a)clustermatic.org http://www.clustermatic.org/mailman/listinfo/linuxbios

4 3

Working with tsop flash
by Kevin O'Connor 28 Sep '03

28 Sep '03

Hi, I have a motherboard that I would like to get linuxbios working on. Unfortunately, it has a TSOP flash part that is soldered directly onto it. I am concerned that if I write to the flash I may turn the unit into a "brick". Has anyone had any experience with removing a surface mounted flash TSOP part, and replacing it with a ZIF socket? If I understand it correctly, I should be able to heat up the leads of the current flash (melting the existing solder), extract the flash part, then solder on a zif socket (http://www.emulation.com/catalog/off-the-shelf_solutions/sockets/tsop/), and then finally use an eprom programmer on the existing tsop flash chip if it ever gets flashed incorrectly. Is this correct - anyone here done this before? Is this procedure very tricky (can one new to soldering expect to succeed at it)? Any advice would be appreciated, -Kevin -- ------------------------------------------------------------------------ | Kevin O'Connor "BTW, IMHO we need a FAQ for | | kevin(a)koconnor.net 'IMHO', 'FAQ', 'BTW', etc. !" | ------------------------------------------------------------------------

7 6

MSI ???
by spidermantm＠freenet.de 27 Sep '03

27 Sep '03

Hello ? am new to this mailinglist. does anybody know about linuxbios and MSI mainboards ? thanks for hint. regards. spidey. -- 60% Onlinekosten sparen! Jetzt Premium Mitglied bei freenet.de werden und mit dem Tarifnavigator guenstiger surfen. http://www.freenet.de/tipp/premium/tarif/index.html

1 0

sis740
by Andre Dias 27 Sep '03

27 Sep '03

Has anyone tried using linuxbios with SiS740/SiS962L chipset? (eg, pcchips new m810dlu series) ======================== Andre Dias Gerente Ponto-i Equipamentos e Serviços www.ponto-i.net

2 1

V2 via/epia
by ron minnich 27 Sep '03

27 Sep '03

I think I've got the last kinks out on 8601; we'll find out monday. ron

1 0

V2 via epia
by ron minnich 26 Sep '03

26 Sep '03

Closer. I'm getting through all of the 8601 setup. But the values are bogus: Good VIA! 00: 06 11 01 06 06 00 90 a2 05 00 00 06 00 40 00 00 10: 08 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 20: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 30: 00 00 00 00 a0 00 00 00 00 00 00 00 00 00 00 00 40: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 50: ac 08 80 00 00 00 20 20 80 00 10 20 20 20 20 20 60: 3f ff ff f0 e4 e4 e4 00 42 ac 65 0d 08 7f 00 00 70: c0 88 ec 0c 0e 81 52 00 01 f0 00 00 00 00 00 00 80: 00 41 00 00 00 00 00 00 00 00 00 00 00 00 00 00 90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 a0: 02 00 20 00 03 02 00 07 00 00 00 00 08 02 00 00 b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 f0: 00 00 00 00 00 00 01 01 00 42 00 b0 00 00 00 00 Bad VIA! Bad! Bad doggy! 00:06 11 01 06 06 00 90 22 05 00 00 06 00 00 00 00 10:08 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 20:00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 30:00 00 00 00 a0 00 00 00 00 00 00 00 00 00 00 00 40:00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 50:ac 08 80 00 00 00 ff ff 00 00 ff ff ff ff ff ff 60:3f 00 00 00 e4 e4 e4 00 42 ac 65 0d 08 7f 00 00 70:00 00 00 00 00 00 00 00 01 f0 00 00 00 00 00 00 80:00 c1 00 00 00 00 00 00 00 00 00 00 00 00 00 00 90:00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 a0:02 00 20 00 03 02 00 07 00 00 00 00 08 02 00 00 b0:00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 c0:00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 d0:00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 e0:00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 f0:00 00 00 00 00 00 01 01 00 00 00 00 00 00 00 00 ah well. I can ship my tree to those of you who want it again. We're working on a solution to the CVS problem, and unlike the sourceforge solutions, we think this one will actually work. So hang in there, we hope next week. ron

1 0

keyboard idle - sis730
by Andre Dias 26 Sep '03

26 Sep '03

Dear fellows, I use linuxbios with m810 but sometimes, when I am not typing on the keyboard (when it is idle), the keyboard no longer responds (otherwise it works ok). Did you have such problem? Any solution, say disable something in kernel? Thanks in advance ======================== Andre Dias Gerente Ponto-i Equipamentos e Serviços www.ponto-i.net

1 0

bug in pci_locate_device?
by ron minnich 26 Sep '03

26 Sep '03

interesting. This: north = pci_locate_device(PCI_ID(0x1106, 0x8601), 0); returned: 00000800 Which is Wrong. And the 8601 reads ok, but writes fail in config space. Once I just set it to 0, things got a lot better! But it still fails :-) ron

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