Can I use a wide scsi drive on a narrow scsi bus?

gulliver · 16 September 2010, 02:03

Can I use wide scsi drive on a narrow scsi bus?
I want to connect my BlizzardPPC 603e+ to an ACARD AEC-7720UW plugged to an IDE drive. Is it possible to do it only by using a 68 to 50 pin male to male adapter?

Thanks in advance

rkauer · 16 September 2010, 02:50

It is possible, but you have to use a pair of active terminators, otherwise the SCSI chain will go bananas!

gulliver · 16 September 2010, 02:54

Two terminators?
I have an active one, 50 pins with passthru. Where should I place the other one?

rkauer · 16 September 2010, 05:10

Sack the 50 pin one and use two active ones.

Wide SCSI is 16bit, so a 8bit terminator will only terminate the lower bits, leaving the upper data path no-terminated.

gulliver · 17 September 2010, 04:50

Thanks

16 September 2010, 02:03	#1
gulliver BoingBagged Join Date: Aug 2007 Location: The South of nowhere Age: 46 Posts: 2,358	Can I use a wide scsi drive on a narrow scsi bus? Can I use wide scsi drive on a narrow scsi bus? I want to connect my BlizzardPPC 603e+ to an ACARD AEC-7720UW plugged to an IDE drive. Is it possible to do it only by using a 68 to 50 pin male to male adapter? Thanks in advance

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16 September 2010, 02:50	#2
rkauer I hate potatos and shirts Join Date: Oct 2007 Location: Sao Leopoldo / Brazil Age: 58 Posts: 3,482	It is possible, but you have to use a pair of active terminators, otherwise the SCSI chain will go bananas!

16 September 2010, 02:54	#3
gulliver BoingBagged Join Date: Aug 2007 Location: The South of nowhere Age: 46 Posts: 2,358	Two terminators? I have an active one, 50 pins with passthru. Where should I place the other one?

16 September 2010, 05:10	#4
rkauer I hate potatos and shirts Join Date: Oct 2007 Location: Sao Leopoldo / Brazil Age: 58 Posts: 3,482	Sack the 50 pin one and use two active ones. Wide SCSI is 16bit, so a 8bit terminator will only terminate the lower bits, leaving the upper data path no-terminated.

17 September 2010, 04:50	#5
gulliver BoingBagged Join Date: Aug 2007 Location: The South of nowhere Age: 46 Posts: 2,358	Thanks

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