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 |
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1 | £15.00 |
System 1 Trainer EPROM New Mitsubishi M5L2732K programmed with the System 1 Monitor and Applications |
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1 | £10.00 |
Pair of Tesla MH74S571 PROMs
programmed with
SCIOS Version 1
(with 9th digit modification) Low nibble IC2 White dot |
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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 |
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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 |
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1 | £15.00 |
Tesla MH74S571 PROM
programmed with Softy 1/2 Character Font IC9 Purple dot |
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1 | £10.00 |
New Intel 2708 EPROM
programmed with Softy 1 Firmware (IC17) |
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1 | £15.00 |
Used and programmed National Semiconductor 74S287 PROM, still useful for testing programmers | 5 | £1.00 | |
Used and programmed National Semiconductor 74S571 PROM, still useful for testing programmers | 5 | £1.00 | |
Processors | |||
New R65C102P4 suitable for the FileStore project |
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1 | £20.00 |
Interface | |||
New INS8154D National Semiconductor part in gold capped ceramic package |
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0 | £40.00 |
(Probably) Used INS8154N National Semiconductor part in plastic package |
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0 | £25.00 |
TMS2793 Floppy Disk Controller, suitable for the FileStore project |
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2 | £12.00 |
AY-3-4592 Keyboard Controller used on the Acorn System Keyboards |
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0 | £25 |