Components Shop

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
Acorn System 1 PROMs MH74S571 1 £20
System 1 Trainer EPROM

New Mitsubishi M5L2732K programmed with the System 1 Monitor and Applications
System 1 Trainer Monitor EPROM 1 £10
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 £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
MK14 PROMs SCIOS Version 2 MH74S571 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
SCIOS Version 3 PROMs 2 £20
       
National Semiconductor DM74S287 PROM programmed with Softy 1 Character Font
IC9 Purple dot
SOFTY 1 Character PROM DM74S287 0 £20
National Semiconductor DM74S571 PROM programmed with Softy 1 Character Font
IC9 Purple dot
SOFTY 1 Character PROM DM74S571 0 £15
New Intel 2708 EPROM programmed with Softy 1 Firmware (IC17)
SOFTY 1 Firmware 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.
uPD446C-3 SRAM 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 INS8154D Ceramic 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 HD46505SP-2 3 £1
RAMTRON FM1608-120-PG 8Kx8bits FRAM
suitable for the PICL project
FM1608-120-PG 5 £3
RAMTRON FM1808-70-PG 32Kx8bits FRAM RAMTRON FM1808-70-PG  2 £4
       
       
Miscellanous Parts      
       
more to follow      
       
       
       

Back to Shop Front

Back to Acorn Home Page