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(this version incorporates my fix to ensure reliable 3.5" drive operation)
New Mitsubishi M5L2732K programmed with the System 1 Monitor and Applications
Low nibble IC6 Yellow dot
High nibble IC5 Blue dot
I have a number of spare PCB's left over from my replica projects which I offer here:
I regularly get asked 'what boards do I need to build a System x ?' so I have created a Build Guidance page to help.
| Item | Picture | Available | Price |
| Keyboards | |||
| Replica ASCII Keyboard PCB (Original Atom case version) |
|
5 | £20.14 |
| ASCII Keyboard PCB (Alternative Electron case version) |
|
5 | £16.21 |
| Backplanes | |||
| Backplane 8-Slot Buffered PCB (with B-side tracked) |
|
1 | £9.83 |
| Backplane 10-Slot Unbuffered PCB (with B-side tracked) |
|
2 | £9.52 |
| Backplane 12-Slot Buffered PCB (with B-side tracked) |
|
0 | £12.90 |
| Backplane 14-Slot Unbuffered PCB (with B-side tracked) |
|
2 | £12.03 |
| Backplane 14-Slot Unbuffered Wide PCB (with B-side tracked) |
|
3 | £16.37 |
| Backplane Extender Board PCB |
|
4 | £9.02 |
| There are also smaller backplanes avaliable that are part of the FileStore E10E and MK14E projects. | |||
| Memory Boards | |||
| Replica 8K RAM + 8K ROM Board PCB |
|
5 | £8.15 |
| Replica 32K Dynamic RAM Board PCB |
|
0 | £8.15 |
| Replica CUMEM Universal Memory Carrier Board PCB |
|
5 | £8.15 |
| Dual Port RAM Board PCB |
|
0 | TBD |
| ROM Board PCB |
|
4 | £8.15 |
| Video Boards | |||
| Replica 40x25 VDU (Teletext) Interface Board PCB |
|
5 | £8.15 |
| Replica 80x25 VDU Interface Board PCB |
|
2 | £8.15 |
| 80x25 VDU Interface (Enhanced) Board PCB |
|
1 | £8.15 |
| Processor & Interface Boards (also see Acorn System 1 below) | |||
| Replica 6502 CPU Board PCB |
|
4 | £8.15 |
| Replica 6502A CPU Board PCB |
|
1 | £8.15 |
| Replica 6809 CPU Board the original which uses the 74S470 PROM for address decoding. |
|
4 | £8.15 |
| Replica 6809 CPU Board a modifed version which uses a 16V8 PAL for address decoding, also comes with a Printer Adapter board. |
|
4 | £9.15 |
| Replica Versatile Interface Board (VIB) PCB |
|
4 | £9.60 |
|
Replica Floppy Disk Controller
Board PCB (this version incorporates my fix to ensure reliable 3.5" drive operation) |
|
5 | £8.15 |
| Replica Econet Node Board PCB |
|
5 | £8.15 |
| Replica Keyboard, Display & Cassette Interface Board PCB |
|
not yet avaliable | £8.15 |
| Replica Analogue Interface Board PCB |
|
not yet avaliable | £8.15 |
| Analogue Interface Board Remote Panel PCB |
|
not yet avaliable | £? |
| Replica Laboratory Interface Board PCB | not yet avaliable | £8.15 | |
| Laboratory Interface Remote Panel PCB |
|
not yet avaliable | £? |
| Programmers | |||
| Replica PROM Programmer Board PCB |
|
4 | £9.50 |
| PROM Programmer Power Supply PCB |
|
1 | £3.19 |
| PROM Programmer Front Panel PCB |
|
5 | £1.52 |
| Tesla PROM Programmer PCB with optional Front Panel PCB |
|
0 | £12.27 |
| Acorn System 1 | |||
| System 1 Trainer PCB |
|
5 | £11.23 |
|
System 1 Trainer EPROM New Mitsubishi M5L2732K programmed with the System 1 Monitor and Applications |
|
1 | £10.00 |
| Pair of Tesla MH74S571 PROMs
programmed with
Acorn System 1 Monitor
(for original System 1) Low nibble IC6 Yellow dot High nibble IC5 Blue dot |
|
1 | £15.00 |