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- Newsgroups: comp.sys.apple2
- Path: sparky!uunet!usc!elroy.jpl.nasa.gov!ames!xn.ll.mit.edu!ll.mit.edu!yasu
- From: yasu@ll.mit.edu (Alan Yasutovich)
- Subject: question about external disks on apple IIc
- Message-ID: <1992Aug14.185856.19536@ll.mit.edu>
- Sender: news@ll.mit.edu
- Organization: MIT Lincoln Laboratory
- Date: Fri, 14 Aug 92 18:58:56 GMT
- Lines: 31
-
-
- I just aquired some "disk II" floppy drives. I want
- to use one as an external.
-
- The connector is a 20 pin ribbon type on the drives. The
- drives all work fine on the inside port. Boot-up, etc..
-
- I took out the 19 pin D connector for the external drive, and
- put in a right angle 20 pin connector instead to facilitate
- the external drives. I cut off pin "20" on the connector.
-
- The external drive works, except when trying to format
- a floppy (as a test) it comes back "disk is write protected".
-
- The new disks work fine on the inside port.
-
- Does anyone have any hardware info on the ports? I rang out
- the lines before changing the connector. They are all common,
- pin for pin, except pins 16 (not used), 17 (disk select I
- think. It goes to pin 20 and 21 on the same chip on each
- connector), 9, and 10. I don't know where 9 & 10 go.
-
-
- So the disk works except it sees write protect.
- What's the answer?
-
- --
- Alan Yasutovich
- "inquiring (and nosey) minds WANT TO KNOW!!!"
- I can remember when "safe sex" meant having a padded headboard!!
- Tick Tock.....Tick Tock......Tick Tock .....Tick Tock......
-