File list
This special page shows all uploaded files.
| Date | Name | Thumbnail | Size | User | Description | Versions |
|---|---|---|---|---|---|---|
| 14:28, 14 September 2020 | 6502tube.gif (file) |  |
425 KB | Cverrier | 6502 Second Processor circuit diagram | 1 |
| 13:38, 13 September 2020 | Acorn-electron.png (file) |  |
365 KB | Cverrier | Acorn Electron | 1 |
| 18:33, 14 September 2020 | Master512copro.jpg (file) |  |
352 KB | Cverrier | Master 512 80186 Co-processor daughterboard | 1 |
| 13:48, 12 September 2020 | BBCMicroIssue2.jpg (file) |  |
344 KB | Cverrier | 1 | |
| 19:32, 2 February 2016 | 80286copro.jpeg (file) |  |
290 KB | Lurkio | downsized | 2 |
| 12:57, 12 September 2020 | BBCMicro.png (file) |  |
200 KB | Cverrier | BBC Micro | 1 |
| 11:38, 14 September 2020 | ModelA Motherboard.jpg (file) |  |
153 KB | Cverrier | BBC Model A - Lid and keyboard removed | 1 |
| 03:48, 16 October 2021 | NegativeInkeyHEX.jpg (file) |  |
139 KB | Mikroman3526 | HEX values added | 1 |
| 20:26, 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 |
| 14:37, 12 September 2020 | AtomKit.jpg (file) |  |
111 KB | Cverrier | Acorn Atom Kit | 1 |
| 13:34, 13 September 2020 | BBC-Micro-and-Microvitec-Cub-Monitor.jpg (file) |  |
106 KB | Cverrier | Microvitec Cub 1431 Monitor | 1 |
| 18:35, 14 September 2020 | Master512internals.jpg (file) |  |
103 KB | Cverrier | BBC Master internals | 1 |
| 13:15, 13 September 2020 | ModelBplus.jpg (file) |  |
90 KB | Cverrier | BBC Microcomputer Plus 64 | 1 |
| 15:49, 14 February 2016 | Mode7vsTeletext.png (file) |  |
86 KB | Lurkio | 2 | |
| 14:48, 12 September 2020 | AcormAtomMagAdvert.jpg (file) |  |
83 KB | Cverrier | Acorn Atom Magazine Advertisment | 1 |
| 13:33, 12 September 2020 | BBCMicroUserGuide.jpg (file) |  |
82 KB | Cverrier | BBC Micro User Guide | 1 |
| 13:55, 13 September 2020 | Plus 3 fitted.jpg (file) |  |
77 KB | Cverrier | Acorn Plus Three expansion module | 1 |
| 13:14, 13 September 2020 | SpeechUpgrade.jpg (file) |  |
74 KB | Cverrier | BBC Micro Speech Synthesis upgrade | 1 |
| 13:33, 12 September 2020 | BBCMicroUserGuide(Provisional).jpg (file) | .jpg) |
73 KB | Cverrier | BBC Micro Provisional User Guide | 1 |
| 20:41, 22 February 2016 | PDP11 BBC BASIC.jpg (file) |  |
66 KB | Jgharston | Reverted to version as of 22:05, 15 February 2016 | 3 |
| 11:01, 14 September 2020 | EliteBox.jpg (file) |  |
65 KB | Cverrier | Elite for BBC Micro - Packaging front cover | 1 |
| 13:26, 13 September 2020 | MasterCompact.jpg (file) |  |
59 KB | Cverrier | BBC Master Compact - with screen | 1 |
| 14:22, 12 September 2020 | AcornAtom.jpg (file) |  |
57 KB | Cverrier | 1 | |
| 14:53, 14 September 2020 | The-acorn-ieee-interface-for-the-bbc-microcomputer.jpg (file) |  |
51 KB | Cverrier | IEEE Interface promotional picture | 1 |
| 20:35, 8 March 2015 | NMI timing diagram.png (file) |  |
39 KB | WikiSysop | Diagram of worst case timings of interrupt service routines for quad density floppy disc access. According to Sonninen et al. in "64doc", to interrupt the next instruction the NMI must arrive before the last cycle of the current instruction. Thus, in the | 1 |
| 01:04, 16 January 2023 | CRTC timing.gif (file) |  |
38 KB | Jgharston | 1 | |
| 14:07, 14 September 2020 | BBCMusic500.jpg (file) |  |
32 KB | Cverrier | Acorn Music 500 | 1 |
| 14:18, 14 September 2020 | AcornTeletextAdapter.jpg (file) |  |
31 KB | Cverrier | Acorn Teletext Adaptor | 1 |
| 13:49, 13 September 2020 | ElectronPlus1.jpg (file) |  |
30 KB | Cverrier | Acorn Plus One expansion module | 2 |
| 14:10, 14 September 2020 | 6502SecondProcessor.jpg (file) |  |
29 KB | Cverrier | 6502 Second Processor | 1 |
| 20:19, 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 |
| 23:43, 13 December 2015 | OSWRCH output fanout.png (file) |  |
25 KB | Regregex | Code points and intercept box | 2 |
| 12:52, 12 September 2020 | BBC-Micro User issue 1.jpg (file) |  |
24 KB | Cverrier | Front cover of BBC Micro User magazine Issue 1 | 1 |
| 20:37, 8 March 2015 | Serial ULAs.jpg (file) |  |
22 KB | WikiSysop | The two pin-compatible serial processors used in the BBC Micro and Master series: the Ferranti Serial ULA (2C199E-7, top) and the VLSI Serial Processor or SERPROC (VC2026/201648, bottom). There was a subtle difference in the functionality of the chips. | 1 |
| 20:35, 8 March 2015 | Nmi rdio 16us check.png (file) |  |
21 KB | WikiSysop | Extended timing diagrams for the worst case of reading to I/O memory. NMIs must be no less than 16 − ε µs apart. The ε (epsilon) means that in the worst case the NMIs will just miss one decision point and just catch the next. There are two CPU timing | 1 |
| 20:27, 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 |
| 01:15, 16 January 2023 | CRTC timing small.gif (file) |  |
17 KB | Jgharston | 2 | |
| 20:22, 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 |
| 00:37, 13 October 2016 | Teletext Engineering Test Page.png (file) |  |
12 KB | Jgharston | 2 | |
| 20:22, 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 |
| 01:16, 18 January 2023 | CRTC cursor.gif (file) |  |
10 KB | Jgharston | 1 | |
| 20:36, 8 March 2015 | Screwball intro screenshot.png (file) |  |
9 KB | WikiSysop | ''Screwball'' (MRM Software, 1984) intro screenshot, showing a colourful <code>MODE 7</code> text display. | 1 |
| 20:42, 8 March 2015 | Video ULA serialisation block diagram.png (file) |  |
8 KB | WikiSysop | Block diagram equivalent to the video generation function of the Video ULA in <code>MODE</code>s 0–6. In <code>MODE 7</code> the ULA repeats the RGB Teletext inputs, not shown. My own work. | 1 |
| 20:40, 8 March 2015 | Tomcat gameplay screenshot.png (file) |  |
7 KB | WikiSysop | ''Tomcat'' (Players, 1989) gameplay screenshot, showing a rich <code>MODE 4</code> display. | 1 |
| 04:08, 13 October 2016 | MODE 9 (BBC) demonstration.gif (file) | _demonstration.gif) |
6 KB | Jgharston | 2 | |
| 02:08, 15 August 2016 | Basicstack.gif (file) |  |
5 KB | Jgharston | Demonstration of location of BASIC stack. | 2 |
| 01:20, 18 January 2023 | CRTC cursor small.gif (file) |  |
5 KB | Jgharston | 1 | |
| 20:17, 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 |
| 21:42, 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 |
| 03:06, 13 October 2016 | MODE 12 (BBC) demonstration.gif (file) | _demonstration.gif) |
5 KB | Jgharston | 1 |
