On Sat, 29 Oct 2016, I wrote:

> 
> On Sun, 13 Apr 2014, David Miller wrote:
> 
> > 
> > But oddly in the NCR53CX docs:
> > 
> >     
> > http://www.ibiblio.org/pub/historic-linux/early-ports/Sparc/NCR/NCR53C9X.txt
> > 
> > it speaks as if ESP_CONFIG3_TMS and ESP_CONFIG3_TENB are merely finer 
> > grained versions of config2 register setting ESP_CONFIG2_SCSI2ENAB, 
> > which enables both features.
> 
> Yes, so setting the ESP_CONFIG2_SCSI2ENAB bit is correct. The only 
> problem is, doesn't the ESP_CONFIG3_TMS bit get cleared again later, 
> when the CONFIG3 register is written to?
> 

Nevermind my question. To falsify my own theory, I see that 
ESP_CONFIG3_TMS == ESP_CONFIG3_FCLK, and thus esp_scsi does actually set 
the relevant bit, and therefore "the FSC can receive 3-byte messages 
during businitiated select with ATN."

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