Caple C871i Uživatelský manuál stáhnout pdf (Strana 359)

100

101

Apple II Computer Info

+ signal from drive to controller

>I'm assuming that the pinout of the PCT 19-pin drive connector is the same

>as

>that of the IIGS SmartPort (that's logical, since Apple 3.5 drives work

>perfectly with the PCT) and that the 5.25 drive comes first in the chain

>(as

>indicated by the PCT manual). So a 19-pin pass-through connector needs to

>be

>added at the rear of the PC drive for chaining the Apple 3.5" drive to. OK.

Hang on, there is no way you are going to be able to connect a PC 360KB drive

to an Apple 19 pin disk port (well, I do have a drive that is a standard

PC style drive with an adapter board that makes it emulate a Disk ][ drive)

and read PC 360KB disks.

Apple 5.25" drives use the 4 step lines to manually step the head in or out.

IBM 5.25" drives hold the Direction line high or low and send a single pulse

on the Step line to move the head in or out. Ditto for IBM 3.5" drives.

Apple 3.5" drives use the 4 step lines to select a comand and another line

to strobe it into the drive (or something like that).

David Wilson School of IT & CS, Uni of Wollongong, Australia [email protected]

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Apple II Computer Technical Information : Apple II Family Hardware Info

ftp://ground.ecn.uiowa.edu/2/apple2/miscinfo/hardware : May 2001 : 359 of 572

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Caple C871i Uživatelský manuál Strana 359

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