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TonyDuell · 3rd Jul 2017, 5:29 am

The 8155 is normally reliable, although I have had them fail. This sounds like it uses an 8085 CPU, I've had those fail in strange ways (some instructions don't do what you expect!)

3rd Jul 2017, 5:29 am	#50
TonyDuell Dekatron Join Date: Jun 2015 Location: Biggin Hill, London, UK. Posts: 5,228	Re: Marconi 2019 Signal Generator. The 8155 is normally reliable, although I have had them fail. This sounds like it uses an 8085 CPU, I've had those fail in strange ways (some instructions don't do what you expect!)