4D product information for

BBC B 1770/1772 Disc Interface upgrade with Acorn DFS manuals

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Product Title: BBC B 1770/1772 Disc Interface upgrade with Acorn DFS manuals
Manufacturer/Publisher: Acorn
Stock Code: ACO-1770-DFSMAN
QuickCode: 19635
Format: Hardware
Product Group: 8 bit Computing: Hardware
Condition: New
Availability: Usually available from stock

Floppy disc controller upgrade kit for BBC A or B

Kit includes:-
2x wire links
2x DM7438N

1770DFS subassembly
PCB 4.5cm x 5.5 cm
VLSI VL1772-02PC
Wk 9219
DIL 28Pin Soldered in


Motorola SN74LS173AN 9151 DIL

DM74LS02N Wk 9152 DIL

NB. The Disc Filing System User Guide is second hand.

Fitting instructions are available from here.

Normally referred to as a 1770 upgrade kit, the disc control chip is actually a 1772. 1772 has a faster maximum head step rate of 3ms, the 1770 maximum is 6ms. Either chip will work with all but the very very slowest 5.25" drives.

Price: £49.00 no VAT to pay!
Free UK delivery on orders of £10 or more! (exceptions apply)

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Most orders of less than £10 will incur a £3 admin charge.
Items on special offer are while stocks last and may be time limited.
Items marked S/H are secondhand and have a 3 month warranty
Unless otherwise stated, photos are for illustrative purposes only
UK delivery included on orders of £10 or more (exceptions apply), please ask for overseas delivery cost.
Please check for compatibility. Official orders welcome. E&OE

If you have a sales enquiry please email our sales department
78 Brighton Road, Worthing, West Sussex, BN11 2EN, UK. 01903 523222 (full contact details)
If you have any comments or problems please email info@cjemicros.co.uk
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Last updated: Fri, 11 Oct 2019