MK14 Shop

I have a number of spare PCB's left over from my projects which I offer here:

Item Picture Available Price
MK14
Replica MK14 PCB, black solder resist with gold flash Replica MK14 PCB 0 £32.80
Replica MK14 VDU MK14 VDU PCB 5 £9.60
Pair of Tesla MH74S571 PROMs programmed with SCIOS Version 1 (with 9th digit modification).

Low nibble IC2 White dot
MK14 PROMs SCIOS Version 1 MH74S571 1 £15.00
Pair of Tesla MH74S571 PROMs programmed with SCIOS Version 2 (i.e. with cassette routines).

Low nibble IC2 Green dot
High nibble IC3 Blue dot
MK14 PROMs SCIOS Version 2 MH74S571 1 £15.00
Pair of Tesla MH74S571 PROMs programmed with SCIOS Version 3 (This is a new version with the 'Fast Loader' as described in a thread on vintage-radio.net ).

Low nibble IC2 Orange dot
High nibble IC3 Purple dot
MK14 PROMs SCIOS Version 3 MH74S571 1 £15.00 (£10.00*)
This PCB is a replacement for the NSA1198/9 display used on the MK14 and Acorn System 1 and accepts a pair of 4-digit 7-segment LED displays (courtesy of Trevor Hamblett). NSA1198/9 Replacement Display PCB 1 free with any other purchase
MK14E
MK14E four board set (Mainboard, VDU, Expansion and Backplane) MK14E Four PCB Set.jpg  0 £28.80
MK14E Mainboard PCB, black solder resist

Latest Issue with Fast Loader connector
MK14E Mainboard PCB  1 £14.80
MK14E VDU PCB, black solder resist

Can also be used with an original MK14
MK14E VDU PCB 0 £9.60
MK14E Expansion Board (Issue 1.0) Populated
complete with 3-Slot Backplane
MK14E Expansion Board Issue 1.0 Populated 1 £30.00
MK14E Expansion Board( Issue 1.1), black solder resist

Cannot be used with an original MK14
MK14E Expansion Board PCB Issue 1.1 4 £9.60
MK14E QWERTY Keyboard, black solder resist

Note the mounting holes for the Cherry Key switches need enlarging slightly to 1.7mm
MK14E Keyboard PCB  1 £14.40
MK14E Backplane (3-slot), black solder resist MK14E Backplane PCB 0 £3.00
MK14E Backplane (4-slot, Flat), black solder resist MK14E Backplane (Flat) PCB 4 £7.90
MK14E Backplane (3-slot), green solder resist MK14E Backplane PCB (green) 4 £2.00
MK14E Backplane (3-slot), green solder resist, with connectors fitted MK14E Backplane (green) 1 £10.00

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