File:Acorn teletext VDU interface Eurocard circuit diagram (200,002).png
Summary
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Acorn Computers' circuit diagram of the teletext VDU interface Eurocard, drawing 200,002/C ("V.D.U. Interface PCB (Teletext)"), drawn by CBT, revisions dated June and August 1979. MC6845 CRT controller (IC4), SAA5050 character generator (IC13), two 2114-3 video RAMs, 74LS157 address multiplexers, the dot-clock oscillator with preset R3, and the video output transistor Q1. Used in the Acorn System 2, 3 and 4.
Source
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Ben Harris's Acorn archive, https://bjh21.me.uk/acorn/circuits/0200,002-1.tiff (listed on https://bjh21.me.uk/acorn/circuits/circuits.html), retrieved 2026-10-01. Converted from a 1-bit TIFF to PNG and reduced to 3500 pixels wide.
Author
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Acorn Computers Ltd. Scan by Ben Harris.
Licence
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Copyright 1979 Acorn Computers Ltd. Hosted for preservation and repair reference.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 09:14, 1 October 2026 | | 3,500 × 2,490 (105 KB) | Josh (talk | contribs) | Acorn Eurocard circuit diagram from Ben Harris's archive |
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