18 Jan
2011
18 Jan
'11
11:18 a.m.
Jules asks:
What would be needed to add a parallel address
interface?
I believe that could be called the WD1003 :-)
In terms of cabling economy parallel cylinder select has some big disadvantages. Not that
step-in-step-out cylinder select is awful efficient after you get to having multiple drive
systems either (thus ESDI which used similar cabling but much more efficiently).
Isn't it wonderful the way the pendulum swings? First parallel cylinder select (e.g.
SMD and other bus and tag type address interfaces), then step in/out cylinder select (e.g.
SA4000/SA1000/ST-506) and serial cylinder select (e.g. ESDI), then parallel cylinder
select (e.g. IDE/ATA/SCSI), then serial cylinder select (e.g. SATA).
Tim.