Do you have, or have access to a logic probe or an oscilloscope, or maybe a logic analyser?
If yes, then it should be possible to determine if the system is trying to write data to the AY chip.
If you have a multimeter, you can test the power supply pins of the AY chip.
Mark
AY sound issue with Just Speccy 128k
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Re: AY sound issue with Just Speccy 128k
Standby alert
“There are four lights!”
Step up to red alert. Sir, are you absolutely sure? It does mean changing the bulb
Looking forward to summer later in the year.
“There are four lights!”
Step up to red alert. Sir, are you absolutely sure? It does mean changing the bulb
Looking forward to summer later in the year.
Re: AY sound issue with Just Speccy 128k
Yeah, I do have a multimeter.
I was going to have a look over the board at the weekend and get the multimeter on it to see if I could spot anything, but the battery has gone in the multimeter.
*sigh* nothing is ever simple!
I was going to have a look over the board at the weekend and get the multimeter on it to see if I could spot anything, but the battery has gone in the multimeter.
*sigh* nothing is ever simple!