Raspberry Pi: Difference between revisions

Revision as of 21:18, 7 February 2012

Revision as of 22:04, 7 February 2012

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# '''Model A''' and '''Model B''' are cultural references<ref name="raspberrypi model names">{{cite web | url=http://www.theregister.co.uk/2011/11/28/raspberry_pi/page3.html | title=Psst, kid... Wanna learn how to hack? | publisher=The Register | date=28th November 2011 | accessdate=24th December 2011 | author=Williams, Chris}}</ref> to the original models of the British educational [[BBC Micro]] computer, developed by [[Acorn Computers]] who originally developed the [[ARM]] processors (the architecture of the Raspberry Pi) and operating system [[RISC OS]] which will be able to be run on it.<ref name="osnews risc os" />

# The 26-pin GPIO connector is not assembled on the board. TheIf the end-user wants to use the GPIOs he must purchase and solder a 13×2 [[pin header]] with 0.1-inch (2.54&nbsp;mm) spacing. The pin header can be either a straight pin header, mounted on either the bottom or the top, (to connect to a [[daughterboard]]) or it can be a right-angle shrouded (and perhaps keyed) box connector for use with a ribbon cable. <ref name="hq-qa" />

# At the moment [[RISC OS]] (shared source) is not yet supported, as it lacks essential drivers.<ref name="osnews risc os" />

# On the model B beta boards, 128&nbsp;MiB is allocated by default to the GPU.<ref> [http://www.reddit.com/r/raspberry_pi/comments/oicyr/i_have_a_raspberry_pi_beta_board_ama/c3hj3n0 I have a raspberry pi beta board ama] </ref> The Nokia 701 also uses 128MiB for the Broadcom VideoCore IV.<ref> [http://www.raspberrypi.org/forum/general-discussion/nokia-701-has-a-similar-broadcom-gpu Nokia 701 has a similar Broadcom gpu] </ref> The minimum amount of memory that can be allocated to the GPU is 32 MiB, but with a corresponding loss of multimedia performance, per page 6 of the datasheet.