Difference between revisions of "FAQ"

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A similar function is achieved by the "'''top hat flash'''" which comes at no extra cost with many Elitegroup mainboards like KN3 with MCP55 southbridge. After bootup, it can manually be lifted off the original BIOS chip socket, so the original BIOS can be reflashed after a failure.
A similar function is achieved by the "'''top hat flash'''" which comes at no extra cost with many Elitegroup mainboards like KN3 with MCP55 southbridge. After bootup, it can manually be lifted off the original BIOS chip socket, so the original BIOS can be reflashed after a failure.


==== POST card ====
==== Chip removal tools ====
 
If you're hot-swapping your BIOS chips (i.e., removing the chip while your computer is running, then inserting another one) you'll usually need some tools.


See the [http://www.linuxbios.org/index.php/FAQ#What_is_this_POST_card_thing.3F What is a POST Card?] question in this FAQ.
There are different tools for DIP and PLCC chips. Both types cost roughly 5-10 Euros.


* http://siliconkit.dnsalias.com/cart/index.tpcip.html
[[Image:Plcc tool.jpg|thumb|PLCC BIOS removal tool.]]
* http://www.elstonsystems.com/prod/pc_analyzer.html
[[Image:Dip tool.jpg|thumb|DIP BIOS removal tool.]]
* http://shopv2.elstonsystems.com/product_info.php/products_id/57
* http://www.uxd.com/trio.html
* http://www.soyousa.com/products/proddesc.php?id=261


==== What is this POST card thing? ====
==== POST card ====


A POST card will save your life: it's the only output device (beside beeper) you have during the boot process. The term POST means Power On Self Test and comes from the original IBM specifications for the BIOS. Port 80 is a pre-defined port to which programs can output a byte. The POST card displays the byte in hex on its 2 digit display. We use a lot of POST codes in LinuxBIOS, so if you can tell us the POST code you see, we will have some idea of what happened.  
A POST card will save your life: it's the only output device (beside beeper) you have during the boot process. The term POST means Power On Self Test and comes from the original IBM specifications for the BIOS. Port 80 is a pre-defined port to which programs can output a byte. The POST card displays the byte in hex on its 2 digit display. We use a lot of POST codes in LinuxBIOS, so if you can tell us the POST code you see, we will have some idea of what happened.  
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Often they carry status LEDs for ISA/PCI signals such as: IRDY, BIOS-access, FRAME, OSC, PCI-CLK, RESET, 12V, -12V, 5V, -5V, 3.3V. Some cards where known to not function because the mainboard switches off the CLK on it's slot after non-standard registration.
Often they carry status LEDs for ISA/PCI signals such as: IRDY, BIOS-access, FRAME, OSC, PCI-CLK, RESET, 12V, -12V, 5V, -5V, 3.3V. Some cards where known to not function because the mainboard switches off the CLK on it's slot after non-standard registration.


PCI POST cards can be found in various places. [http://www.linuxbios.org/index.php/FAQ#Developer POST Cards] 
PCI POST cards can be found in various places.
usage see [http://www.linuxbios.org/FAQ#How_can_I_write_to_port_0x80_from_userspace.3F out al,80]
 
See also [http://www.linuxbios.org/FAQ#How_can_I_write_to_port_0x80_from_userspace.3F How can I write to port 0x80 from userspace].
 
* http://siliconkit.dnsalias.com/cart/index.tpcip.html
* http://www.elstonsystems.com/prod/pc_analyzer.html
* http://shopv2.elstonsystems.com/product_info.php/products_id/57
* http://www.uxd.com/trio.html
* http://www.soyousa.com/products/proddesc.php?id=261


==== Compact Flash IDE adaptor ====
==== Compact Flash IDE adaptor ====

Revision as of 12:32, 30 March 2007