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

RogerEvans · 4th Jan 2018, 11:22 am

Sean,

Apologies for missing this in the previous post - can you check ALE pin 30 with the scope and pressing and releasing the reset button. If the 8085 is trying to control the address and data busses then there will be a pulse on ALE every few clock cycles.

Roger

4th Jan 2018, 11:22 am	#34
RogerEvans Hexode Join Date: Oct 2014 Location: Wiltshire, UK. Posts: 381	Re: 8085 processor questions Sean, Apologies for missing this in the previous post - can you check ALE pin 30 with the scope and pressing and releasing the reset button. If the 8085 is trying to control the address and data busses then there will be a pulse on ALE every few clock cycles. Roger