[rescue] Serial console - break "filtering" connection - resistor method

[Peter Stokes]

Hi

Why not just disable it in software which you could do in Solaris from memory?

Peter

Sent from my iPhone

> On 17 Oct 2023, at 01:45, John-Paul Stewart via rescue <rescue at sunhelp.org> wrote:
> 
> 
>> On 2023-10-16 19:31, vom513 via rescue wrote:
>> 
>> Seems to have a much more in depth discussion on this issue.  Pin 25
>> does indeed seem to be “dead air” on this machine and presumably others
>> more recent.
> 
> Indeed.  Pin 25 was used for -5V in the Sun3 era according to:
> 
> http://www.sunhelp.org/faq/sunref3.html
> 
> Search for VERR to find the references.
> 
> Pin 25 was also used, but for a totally different purpose, on some of
> the later machines that had two serial ports in one DB-25 connector
> (such as the SparcStation 10 & 20).  But that doesn't apply to your IPX.
> 
> https://www.sunhelp.org/unix-serial-port-resources/serial-pinouts/
> 
> 
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