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Old 2nd Nov 2019, 11:54 pm   #263
JohnBHanson
Heptode
 
Join Date: Aug 2009
Location: Worthing, Sussex, UK.
Posts: 661
Default Re: Gemini 80-Bus System

The code above looks ok - you set d0 and then issue the sel command. On a GM849A you will have to then output 7 to restore the control lines inactive however this is not required with the previous versions of the SCSI interface as sel is only active for the duration of the IO write cycle.
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