[comp.sys.apple] GS and Disk II drives

shankar@srcsip.UUCP (Subash Shankar) (08/09/88)

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.

matthew@sunpix.UUCP ( Sun NCAA) (08/17/88)

>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  |