File:Acorn 6809 CPU (back).jpg

From Wikimedia Commons, the free media repository
Jump to navigation Jump to search

Acorn_6809_CPU_(back).jpg ‎(640 × 439 pixels, file size: 45 KB, MIME type: image/jpeg)

Captions

Captions

Add a one-line explanation of what this file represents
Description
English: Acorn 6809 CPU (back).This Eurocard is a plug in replacement for the 6502 CPU card to upgrade Acorn Systems 3 and 4 to use the advanced facilities of Motorola's 6809 8-bit processor and is ideally suited to run high level languages such as Pascal. The Acorn 6809 is provided with an operating system in 2K which handles the Acorn VDU, ACSII encoded keyboard and printer; it is readily expanded and very user friendly.The hardware provides for direct plug-in connection to Centronics type printers and encoded keyboards and all 6809 signals are taken off the board via the Acorn bus 64-way edge connector. The address and data lines are buffered and 1K of user RAM is provided. The major components fitted are:

DIN standard indirect edge connector, 20-way and 36-way IDC edge connectors for keyboard and printer. MC 6809 microprocessor. 2K ROM(Initially 2716) 4K and 8K compatible. 1K RAM (2 x 2114). BIPOLAR PROM for address decoding. 6522 two ten bit parallel i/o ports for keyboard and printer. Random logic devices for address decoding.

Bus buffers.
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: Acorn 6809 CPU Direct
Author Chris Whytehead
Permission
(Reusing this file)
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".

License to reuse.

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.

If you use material from Chris's Acorns for commercial purposes, especially on-line auctions, it must not explicitly or implicitly convey Chris's Acorns endorsement of your goods or services.

All photos from the collection are found in the source-category Category:Chris's Acorns.

Chris Whytehead, the copyright holder of this work, hereby publishes it under the following license:
w:en:Creative Commons
attribution share alike
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
You are free:
  • to share – to copy, distribute and transmit the work
  • to remix – to adapt the work
Under the following conditions:
  • attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
  • share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.
VRT Wikimedia

This work is free and may be used by anyone for any purpose. If you wish to use this content, you do not need to request permission as long as you follow any licensing requirements mentioned on this page.

The Wikimedia Foundation has received an e-mail confirming that the copyright holder has approved publication under the terms mentioned on this page. This correspondence has been reviewed by a Volunteer Response Team (VRT) member and stored in our permission archive. The correspondence is available to trusted volunteers as ticket #2011111710006215.

If you have questions about the archived correspondence, please use the VRT noticeboard. Ticket link: https://ticket.wikimedia.org/otrs/index.pl?Action=AgentTicketZoom&TicketNumber=2011111710006215
Find other files from the same ticket: SDC query (SPARQL)

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current21:47, 28 November 2011Thumbnail for version as of 21:47, 28 November 2011640 × 439 (45 KB)Smallbot (talk | contribs)Commons:Bots/Requests/Smallbot Uploading images from http://acorn.chriswhy.co.uk/8bit_Upgrades/Acorn_6809_CPU.html

You cannot overwrite this file.

There are no pages that use this file.

Metadata

This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.

Retrieved from "https://commons.wikimedia.org/w/index.php?title=File:Acorn_6809_CPU_(back).jpg&oldid=781338432"