jerwin
New Member
I need some help from old brain cells out there. I have the Compupro DISK1 board in my Imsai 8080 (rebuild project) and a pair of well-preserved 8" floppy drives. I am writing the basic disk control routines and have hit a snag.
All drives and controller are wired correctly and running. Seek works, specify works, the snag is with format track. The DISK1 docs are amazingly lean in this area. It looks like I am supposed to be feeding the controller sector information as it formats, but there is no indication as to how I do this. I set up the format track command per the tables and get just one sector programmed, then get data overrun errors, so I am starving the controller.
I remember from my INtel days (multibus group, very early 80's) that we were able to program sector interleave, so I am sure I am supposed to be providing the DISK1 controller sector information as it performs the FORMAT command, but there is nothing anywhere telling me how to do this.
Anyone out there remember how to do this???
Jeff Erwin
All drives and controller are wired correctly and running. Seek works, specify works, the snag is with format track. The DISK1 docs are amazingly lean in this area. It looks like I am supposed to be feeding the controller sector information as it formats, but there is no indication as to how I do this. I set up the format track command per the tables and get just one sector programmed, then get data overrun errors, so I am starving the controller.
I remember from my INtel days (multibus group, very early 80's) that we were able to program sector interleave, so I am sure I am supposed to be providing the DISK1 controller sector information as it performs the FORMAT command, but there is nothing anywhere telling me how to do this.
Anyone out there remember how to do this???
Jeff Erwin