Low nibble IC2 White dot
Low nibble IC2 Green dot
High nibble IC3 Blue dot
Low nibble IC2 Orange dot
High nibble IC3 Purple dot
IC9 Purple dot
IC9 Purple dot
IC9 Purple dot
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 |
|
4 | £25 |
| Replica MK14 VDU | to follow | not yet avaliable | |
| Pair of Tesla MH74S571 PROMs
programmed with
SCIOS Version 1
(with 9th digit modification). Low nibble IC2 White dot |
|
1 | £15 |
| 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 |
|
1 | £15 |
| 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 |
|
1 | £15* |
| 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). |
|
3 | free with any other purchase |
| MK14E PCB, black solder resist with gold flash | to follow | not yet avaliable | |
| MK14E VDU PCB, black | to follow | not yet avaliable | |
| MK14E Expansion Board, black | to follow | not yet avaliable | |
| Softy 1 | |||
| Replica Softy 1 Programmer PCB, black solder resist with gold flash |
|
1 | £25 |
| 2716 Adapter |
|
1 | £2 |
| Softy 1 Power Supply PCB |
|
1 | £4 |
| National
Semiconductor DM74S287 PROM
programmed with Softy 1 Character Font IC9 Purple dot |
|
0 | £20 |
| National
Semiconductor DM74S571 PROM
programmed with Softy 1 Character Font IC9 Purple dot |
|
0 | £15 |
| Tesla MH74S571 PROM
programmed with Softy 1 Character Font IC9 Purple dot |
1 | £7 | |
| New Intel 2708 EPROM
programmed with Softy 1 Firmware (IC17) |
|
1 | £20 |
| Miscellaneous | |||
| Floppy Drive Selector Board PCB |
|
4 | £7 |
| 2732-2532 EPROM Adapter PCB |
|
4 | £3 |
* £12 incl postage for members of vintage-radio.net (send me a PM)