File:Watford Electronics RAM-ROM Board (bottom).jpg

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Watford_Electronics_RAM-ROM_Board_(bottom).jpg (609 × 480 pixels, file size: 46 KB, MIME type: image/jpeg)

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English: Watford Electronics RAM/ROM Board (bottom).The Watford Electronics RAM/ROM board can support 8 x 16k dynamic RAM banks, 3 additional ROM sockets and 1 static RAM bank with optional battery backup. In the top picture the dynamic RAM banks are the 8 columns of 2 chips in the top right of the board. The leftmost 2 columns are socketted. The 3 green ROM sockets on the bottom right, from the left, are ROMs 15, 13 & 12 respectively. The leftmost 2 green sockets are for 2 x 8K static RAM. Below and to the left is an area marked "BATT" which is for battery backup to preserve the contents of the static RAM when the BBC is switched off. The big socket to the left of the battery area is a socket for the 6502 CPU which is removed from the motherboard during installation, the socket in the bottom picture plugs into the 6502 socket on the motherboard.More details of configuration and use are in the user guide HERE
Date between circa 2004 and circa 2011
date QS:P,+2050-00-00T00:00:00Z/7,P1319,+2004-00-00T00:00:00Z/9,P1326,+2011-00-00T00:00:00Z/9,P1480,Q5727902
Source Chris's Acorns: Watford Electronics RAM/ROM Board Direct
Author Chris Whytehead
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Chris's Acorns This photograph originates from Chris's Acorns, a collection of material relating to Acorn Computers. The photograph was created between ~2004 and 2011 by Chris Whytehead. Please use the photo while adhering to the license including the attribution to "Chris Whytehead, Chris's Acorns – CC-BY-SA-3.0".

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Information (including text and photos) presented on Chris's Acorns may be reused under the Creative Commons Attribution-Share Alike 3.0 Unported unless otherwise specified. Some information, in particular all the information in the documentation section (e.g. brochures, manuals and books) and the software section (e.g. programs and disc images) remain the copyright of their respective owners and may not be reused without their permission. Images may contain trademarks which remain the property of their respective owners.

Chris's Acorns should be acknowledged as the source of the material by use of an appropriate byline/photo/image credit.

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This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license.
Attribution: Chris Whytehead, Chris's Acorns – CC-BY-SA-3.0
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current16:38, 15 December 2011Thumbnail for version as of 16:38, 15 December 2011609 × 480 (46 KB)Smallbot (talk | contribs)Commons:Bots/Requests/Smallbot Uploading images from http://acorn.chriswhy.co.uk/8bit_Upgrades/WE_RAMROMBoard.html

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