UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post

SiriusHardware · 27th Aug 2018, 11:19 pm

OK, if your PROMS meet the following criteria, which your original post seems to confirm:-

-They are DM Prefixed National Semiconductors DM74S571s, not Tesla MH74S571s.
-They are unused, unprogrammed blanks - used ones can not be reprogrammed.

-Then drop me a PM and we will take it from there.

27th Aug 2018, 11:19 pm	#58
SiriusHardware Dekatron Join Date: Aug 2011 Location: Newcastle, Tyne and Wear, UK. Posts: 11,556	Re: Tesla MH74S571 programming. OK, if your PROMS meet the following criteria, which your original post seems to confirm:- -They are DM Prefixed National Semiconductors DM74S571s, not Tesla MH74S571s. -They are unused, unprogrammed blanks - used ones can not be reprogrammed. -Then drop me a PM and we will take it from there.