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File:Sinclair ZX Spectrum Issue 3 upper RAM link settings (Service Manual figure 7.3.4).jpg

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Original file (444 × 526 pixels, file size: 17 KB, MIME type: image/jpeg)

Summary

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Figure 7.3.4 of Sinclair's ZX Spectrum Service Manual, "Issue 3 Links vs IC Manufacturer and Type": the link positions connecting IC26 pins 10 and 11 to +5 V, 0 V or A14 for OKI high-enable, OKI low-enable, TI 4532-4 and TI 4532-3 expansion RAM. Used on Sinclair ZX Spectrum RAM Replacement.

Source

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File:Sinclair ZX Spectrum Service Manual.pdf (re-typeset Revision 1.3, Spectrum For Everyone), page 39; the figure is the scanned drawing embedded in that page, extracted at its native resolution.

Author

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Sinclair Research Ltd

Licence

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Copyright Sinclair Research Ltd. Not freely licensed. Hosted for preservation and repair reference.

File history

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Date/TimeThumbnailDimensionsUserComment
current10:51, 25 October 2026Thumbnail for version as of 10:51, 25 October 2026444 × 526 (17 KB)Josh (talk | contribs)Image for the Spectrum RAM replacement guide

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