4D product information for

BBC B 1770/1772 Disc Interface upgrade (No manuals etc.)
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Product Title: BBC B 1770/1772 Disc Interface upgrade (No manuals etc.)
Manufacturer/Publisher: Acorn
Stock Code: ACO-1770
QuickCode: 14092
Format: Hardware
Product Group: 8 bit Computing: Hardware
Condition: New
Availability: Usually available from stock

Description:
Floppy disc controller upgrade kit for BBC A or B

Kit includes:-
DFS ROM
2x wire links
2x DM7438N

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

Ti SN74ALS000AN DIL

Motorola SN74LS173AN 9151 DIL

DM74LS02N Wk 9152 DIL

NB. No manual but 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: £44.00 no UK VAT to pay!
Free UK delivery on orders of £40 or more! (exceptions apply)

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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
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UK delivery included on orders of £40 or more (exceptions apply), please ask for overseas delivery cost.
Please check for compatibility. Official orders welcome. E&OE

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Last updated: Thu, 21 Nov 2024