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geekhack Community => Keyboards => Topic started by: Tr0j4nM4x1mus on Thu, 06 May 2010, 00:13:44

Title: g80/81-1800 dip switch to at or pc
Post by: Tr0j4nM4x1mus on Thu, 06 May 2010, 00:13:44

I acquired a that keyboard & it has the big at plug (have an adapter on the way) it has a dip switch on back the can be set to at or pc...which do I set it to??
thank you

Title: g80/81-1800 dip switch to at or pc
Post by: kishy on Thu, 06 May 2010, 00:16:53

AT.

The IBM PC lineup started with the PC (5150 and variants if any), then the PC/XT (5160 and variants), then the PC/AT (5170 and variants).

The PC and PC/XT used one particular keyboard interface, a 5-pin DIN plug with a particular pinout and particular protocol. The PC/AT introduced a new interface using the same physical plug and same pinout, but with changes to the protocol that prevent the keyboards being interchangeable unless they're the switchable type or autosensing.

PS/2 uses the same protocol AT did, so a simple adapter with no conversion circuitry allows AT keyboards to work on PS/2 ports and vice versa.

Title: g80/81-1800 dip switch to at or pc
Post by: Tr0j4nM4x1mus on Thu, 06 May 2010, 00:17:51

thank you

Title: g80/81-1800 dip switch to at or pc
Post by: kishy on Thu, 06 May 2010, 00:20:04

Quote from: Tr0j4nM4x1mus;179428

thank you...what is the pc there for??

Refer to my edit, lol. Figured I could do it quick enough, apparently not.

Title: g80/81-1800 dip switch to at or pc
Post by: elbowglue on Thu, 06 May 2010, 00:34:57

I hope you got the g80-1800 not the g81-1800. :)

Title: g80/81-1800 dip switch to at or pc
Post by: Tr0j4nM4x1mus on Thu, 06 May 2010, 00:49:03

no ..... I wasn't so lucky...it's older but it still has the my switches...it does however have a really nice set of black double shots & has the regular enter key ...it's a nice board besides the my switches