Path: utzoo!attcan!uunet!husc6!uwvax!rutgers!gatech!mcnc!rti!sunpix!matthew
From: matthew@sunpix.UUCP ( Sun NCAA)
Newsgroups: comp.sys.apple
Subject: Re: GS and Disk II drives
Message-ID: <221@greens.UUCP>
Date: 17 Aug 88 02:24:03 GMT
Organization: Sun Microsystems, Research Triangle Park, NC
Lines: 37

>I was looking for a cable that will connect a 20-pin Disk II drive directly
>to the GS's floppy drive port.  Its not neccessary that two Disk II drives
>are to be connected.  Does anybody know of any company that sells these?
>Thanks.


The following is a text breakdown of a Apple //gs to Disk ][ adapter printed 
in the 'Ask the Guru' column of 'Computer Shopper'. (April 1987 w/fix noted in 
July 1987).


Signal Name	Smartport	Disk ][		Disk ][
		Pin Number	Pin Number	Pin Number

Ground		1,2,3,4		1,3,5,7		1,3,5,7
-12v		5		9		9
+5v		6		11,12		11,12
+12v		7,8		13,15,17,19	13,15,17,19
External Int.	9		No Connect	14
Write Protect	10		20		20
Phase0		11		2		2
Phase1		12		4		4
Phase2		13		6		6
Phase3		14		8		8
Write Request	15		10		10
Hard Drive Sel.	16		No Connect	No Connect
Drive 1		17		14		No Connect
Read Data	18		16		16
Write Data	19		18		18


DB-19 Connector and other parts available from JDR Microdevices.

-- 
Matthew Lee Stier     (919) 469-8300|
Sun Microsystems ---  RTP, NC  27560|          "Wisconsin   Escapee"
uucp: {medusa, rti}!sunpix!matthew  |