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Boot_WB · 08 April 2008, 00:52

It looks from the ATA pinout that pin 39 (the missing pin) is the DASP- signal (http://www.interfacebus.com/Design_Connector_IDE.html). This seems to be required to detect the presence of a slave device.

From one document I was just reading, if a signal is not received on DASP- then the bus assumes that no slave is present (http://www.alasir.com/books/hards/043-045.html). I'm not sure how this would affect the second bus if you are just using two master devices though (a hard drive set to master on bus 0, and a CD drive set to master on bus 1).

So yes, I would either be asking for a replacement (or more likely repairing it myself).

Regards

Rich

08 April 2008, 00:52	#4
Boot_WB Novice in the Black Arts Join Date: Nov 2004 Location: Kingston upon Hull Age: 47 Posts: 263	It looks from the ATA pinout that pin 39 (the missing pin) is the DASP- signal (http://www.interfacebus.com/Design_Connector_IDE.html). This seems to be required to detect the presence of a slave device. From one document I was just reading, if a signal is not received on DASP- then the bus assumes that no slave is present (http://www.alasir.com/books/hards/043-045.html). I'm not sure how this would affect the second bus if you are just using two master devices though (a hard drive set to master on bus 0, and a CD drive set to master on bus 1). So yes, I would either be asking for a replacement (or more likely repairing it myself). Regards Rich Last edited by Boot_WB; 08 April 2008 at 00:58.