I have a lot of components left over from my various projects which I offer here:
| Item | Picture | Available | Price |
| Programmed PROMs and EPROMs | |||
| Pair of Tesla MH74S571 PROMs
programmed with
Acorn System 1 Monitor Low nibble IC6 Yellow dot High nibble IC5 Blue dot |
 |
1 | £20 |
|
System 1 Trainer EPROM New Mitsubishi M5L2732K programmed with the System 1 Monitor and Applications |
 |
1 | £10 |
| Pair of Tesla MH74S571 PROMs
programmed with
SCIOS Version 1
(with 9th digit modification) Low nibble IC2 White dot |
 |
1 | £20 |
| 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 |
 |
2 | £20 |
| PPair 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 |
 |
2 | £20 |
| 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 |
| New Intel 2708 EPROM
programmed with Softy 1 Firmware (IC17) |
 |
1 | £20 |
| Memory | |||
| New NEC uPD446C-3 2K x
8-bit SRAM These are equivalent to the HM6116 but I and others have found them to be more reliable when used in the 6502A CPU Board and System 1 Trainer used as a rack mounted Eurocard. |
 |
5 | £2 |
| Used and programmed National Semiconductor 74S287 PROM, still useful for testing programmers | 5 | £1 | |
| Used and programmed National Semiconductor 74S571 PROM, still useful for testing programmers | 5 | £1 | |
| Interface ICs | |||
| New INS8154D National Semiconductor part in gold capped ceramic package |
 |
0 | £25 |
| New INS8154 National Semiconductor part in plastic package | to follow | not yet avaliable | £20 |
| HD46505SP-2 Hitachi part, these were bought from China and are not HD46505SP-2 because some of the registers are missing !, they behave as a basic MC6845 |
 |
3 | £1 |
| RAMTRON FM1608-120-PG
8Kx8bits FRAM suitable for the PICL project |
 |
5 | £3 |
| RAMTRON FM1808-70-PG 32Kx8bits FRAM |
 |
2 | £4 |
| Miscellanous Parts | |||
| more to follow | |||