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Ian Wolstenholme describes the BeebMaster 8271 Disc Upgrade kit (slightly edited) as:
For anyone with a tape-only BBC Model B who feels the need to move ahead into the 1980s, BeebMaster supplying my own 8271 Disc Upgrade Kit. The kits are put together with all-new parts. The 8271 Floppy Disc Controller, which went obsolete in 1985, is "new old stock" and the other ICs 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 3½" floppy disc drives - please specify 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.
I do not have a BeebMaster 8271 Disc Upgrade kit
BBC Model B.
This upgrade kit is not intended for the BBC Model B+ but BeebMaster will adapt a kit for use on the B+ if anybody needs one.
Order from BeebShop . For all enquiries, please contact BeebMaster at Enquiries@BeebShop.co.uk.
copyright © BeebMaster
BeebMaster 8271 Disc Upgrade kit in box
copyright © BeebMaster
BeebMaster 8271 Disc Upgrade kit - what you get
copyright © BeebMaster
BeebMaster 8271 Disc Upgrade kit - instructions & box
The BeebMaster 8271 Disc Upgrade kit is based on an Intel 8271 Disc Controller, for obvious reasons these are "new" old stock.
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