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Date Name Thumbnail Size User Description Versions
13:10, 14 September 2020 6502SecondProcessor.jpg (file) 29 KB Cverrier 6502 Second Processor 1
13:28, 14 September 2020 6502tube.gif (file) 425 KB Cverrier 6502 Second Processor circuit diagram 1
18:32, 2 February 2016 80286copro.jpeg (file) 290 KB Lurkio downsized 2
13:48, 12 September 2020 AcormAtomMagAdvert.jpg (file) 83 KB Cverrier Acorn Atom Magazine Advertisment 1
12:38, 13 September 2020 Acorn-electron.png (file) 365 KB Cverrier Acorn Electron 1
13:22, 12 September 2020 AcornAtom.jpg (file) 57 KB Cverrier   1
13:18, 14 September 2020 AcornTeletextAdapter.jpg (file) 31 KB Cverrier Acorn Teletext Adaptor 1
13:37, 12 September 2020 AtomKit.jpg (file) 111 KB Cverrier Acorn Atom Kit 1
19:17, 8 March 2015 Auto Beebaid help screen plus blue background.png (file) 5 KB WikiSysop Help screen of Auto BeebAid (Jaysoft, 1985), in a MODE 4 text-only display. A blue background has previously been selected, to show the 'Venetian blind' effect of the non-addressable blank scanlines inserted in MODE 4. 1
19:18, 8 March 2015 Auto Beebaid help screen plus blue background detail.png (file) 2 KB WikiSysop Detail of help screen of Auto BeebAid (Jaysoft, 1985), in a MODE 4 text-only display. A blue background has previously been selected, to show the 'Venetian blind' effect of the non-addressable blank scanlines inserted in MODE 4. 1
12:34, 13 September 2020 BBC-Micro-and-Microvitec-Cub-Monitor.jpg (file) 106 KB Cverrier Microvitec Cub 1431 Monitor 1
11:52, 12 September 2020 BBC-Micro User issue 1.jpg (file) 24 KB Cverrier Front cover of BBC Micro User magazine Issue 1 1
11:57, 12 September 2020 BBCMicro.png (file) 200 KB Cverrier BBC Micro 1
12:48, 12 September 2020 BBCMicroIssue2.jpg (file) 344 KB Cverrier   1
12:33, 12 September 2020 BBCMicroUserGuide(Provisional).jpg (file) 73 KB Cverrier BBC Micro Provisional User Guide 1
12:33, 12 September 2020 BBCMicroUserGuide.jpg (file) 82 KB Cverrier BBC Micro User Guide 1
13:07, 14 September 2020 BBCMusic500.jpg (file) 32 KB Cverrier Acorn Music 500 1
19:19, 8 March 2015 BBC Micro orientation.jpg (file) 27 KB WikiSysop Illustration of the conventional 'compass points' of the BBC Micro's motherboard, referenced in service literature. Does not necessarily apply to daughterboards or to the power supply board. 1
01:08, 15 August 2016 Basicstack.gif (file) 5 KB Jgharston Demonstration of location of BASIC stack. 2
00:16, 18 January 2023 CRTC cursor.gif (file) 10 KB Jgharston   1
00:20, 18 January 2023 CRTC cursor small.gif (file) 5 KB Jgharston   1
00:04, 16 January 2023 CRTC timing.gif (file) 38 KB Jgharston   1
00:15, 16 January 2023 CRTC timing small.gif (file) 17 KB Jgharston   2
19:19, 8 March 2015 Caterpillar gameplay screenshot.png (file) 1 KB WikiSysop Caterpillar (IJK Software, 1983) gameplay screenshot, showing a typical MODE 1 display. 1
20:42, 14 May 2020 DDOS disc catalogue format.png (file) 5 KB Regregex Reverted to version as of 21:36, 13 December 2015: byte 0 is configuration/version number as per manual 4
19:21, 8 March 2015 DDOS disc catalogue format z.png (file) 4 KB WikiSysop Diagram of the byte assignments in the disc catalogue of an Opus DDOS disc. Theoretically all fields extend to the top of the byte, but here they are shown with the limits that apply to real discs. The first track field of a volume is set to 0 if the vol 1
19:22, 8 March 2015 DDOS volume catalogue format.png (file) 12 KB WikiSysop Diagram of byte assignments in the volume A catalogue of an Opus DDOS disc. The catalogues of volumes B to H occupy sectors 2 to 15. My own work. Regregex 04:00, 9 April 2008 (BST) 1
19:22, 8 March 2015 DFS catalogue format.png (file) 12 KB WikiSysop Layout of the fields in an Acorn DFS catalogue. The disc, and each of the 31 files, are assigned 8 bytes in each of the two catalogue sectors. White rectangles mark unallocated bits that should be set to zero. Cream rectangles are for bits used by third 1
19:23, 8 March 2015 EDOS help screen plus red background.png (file) 2 KB WikiSysop Portion of <samp>*HELP</samp> output of ''Opus EDOS'' (Alan Williams, 1984), in a <code>MODE 6</code> text-only display. A red background has previously been selected, to show the 'Venetian blind' effect of the non-addressable blank scanlines inserte 1
12:49, 13 September 2020 ElectronPlus1.jpg (file) 30 KB Cverrier Acorn Plus One expansion module 2
10:01, 14 September 2020 EliteBox.jpg (file) 65 KB Cverrier Elite for BBC Micro - Packaging front cover 1
10:21, 14 September 2020 EliteScreen.gif (file) 4 KB Cverrier BBC Elite gameplay 1
19:24, 8 March 2015 Exile gameplay tallscreen.png (file) 3 KB WikiSysop ''Exile'' (Superior Software, 1988) gameplay screenshot, showing a rich <code>MODE 2</code> display. This is from the 6502 Second Processor enhanced version, with taller viewing area. 1
19:24, 8 March 2015 Frak gameplay screenshot.png (file) 2 KB WikiSysop ''Frak!'' (Aardvark, 1984) gameplay screenshot, showing a typical <code>MODE 1</code> display. 1
19:25, 8 March 2015 Graphics window.png (file) 2 KB WikiSysop Defining a graphics window using <code>VDU 24</code>. The distances are actually measured from the graphics origin, which is in its default position at the bottom left corner of the screen. The BASIC command to define this window is: <code>VDU 23,left;... 1
19:26, 8 March 2015 High density modified board.jpg (file) 120 KB WikiSysop Top side of an Opus EO 118 floppy drive controller daughterboard for the BBC Micro, modified to enable high-density access. 1
19:27, 8 March 2015 High density screenshot.jpg (file) 18 KB WikiSysop Screenshot of an extensively-patched ''Opus EDOS'' (Alan Williams, 1984) partitioning and cataloguing a high-density disc. Taken shortly after the first successful test on 11 July 2009. 1
19:27, 8 March 2015 Impact gameplay screenshot.png (file) 2 KB WikiSysop ''Impact!'' (Audiogenic, 1987) gameplay screenshot, showing a rich <code>MODE 5</code> display. 1
19:29, 8 March 2015 Inter-Word editing screen.png (file) 3 KB WikiSysop A text file being edited in ''Inter-Word'' (Computer Concepts, 1986), showing a typical <code>MODE 0</code> display. 2
19:28, 8 March 2015 Inter-word editing screen detail.png (file) 2 KB WikiSysop Detail of a text file being edited in ''Inter-Word'' (Computer Concepts, 1986), showing a typical <code>MODE 0</code> display. 1
20:55, 12 October 2016 MODE 10 (BBC) demonstration.png (file) 2 KB Jgharston   2
19:34, 8 March 2015 MODE 10 BBC demonstration.png (file) 898 bytes WikiSysop Demonstration of the unofficial "MODE 10" on the BBC Micro, developed by Ian Robertson and published in ''The Micro User'' magazine (November 1985, p.123). 1
18:17, 12 October 2016 MODE 11 (BBC) demonstration.gif (file) 4 KB Jgharston   1
02:06, 13 October 2016 MODE 12 (BBC) demonstration.gif (file) 5 KB Jgharston   1
03:09, 13 October 2016 MODE 13 (BBC) demonstration.gif (file) 5 KB Jgharston   5
18:12, 12 October 2016 MODE 14 (BBC) demonstration.gif (file) 4 KB Jgharston   1
13:13, 9 October 2016 MODE 8 (BBC) demonstration.gif (file) 4 KB Jgharston   1
19:31, 8 March 2015 MODE 8 BBC demonstration.png (file) 2 KB WikiSysop Demonstration of the unofficial "MODE 8" on the BBC Micro, developed by Ian Robertson and published in ''The Micro User'' magazine (November 1985, p.123). An alternative example is found in ''The Advanced User Guide for the BBC Microcomputer'' (Bray, D... 1
03:08, 13 October 2016 MODE 9 (BBC) demonstration.gif (file) 6 KB Jgharston   2
21:14, 12 October 2016 MODE 9 (BBC) demonstration.png (file) 2 KB Jgharston   1
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