For anyone with a tape-only BBC Model B who feels the need to move ahead into the 1980s, I am supplying my own 8271 Disc Upgrade Kit. I have put these new kits together with genuine Intel 8271 Floppy Disc Controller, which went obsolete in 1985. All the logic chips supplied in the kits are brand-new parts.

Each kit contains: Intel 8271 Floppy Disc Controller 2 x 7438 74LS10 2 x 74LS393 2 x CD4013B CD4020B 74LS123 DNFS 1.20 chip OR DNFS 1.21 for use with modern 3½" floppy disc drives - please specify using the options above when ordering!

The microchips are supplied in a handy reusable box and the kit comes with full fitting instructions. NO SOLDERING is required to an Issue 4 or Issue 7 BBC Model B. All you do is plug the chips into the sockets provided on the PCB, move seven links and cut one further link. For issues 1, 2 and 3 a slight modification is required which involves soldering and needs a short bit of insulated wire which I will supply if needed - please specify when ordering. This upgrade kit is not intended for the BBC Model B+ but I will adapt a kit for use on the B+ if anybody needs one.

For all enquiries, please contact me at Enquiries@BeebShop.co.uk

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