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Floppy Diskdrive specification users reports and reviews |
| Date | Content Revision |
User opinion | Comment | Approved by moderator? |
|---|---|---|---|---|
| CORRECT | APPROVED | |||
| CORRECT | APPROVED | |||
| CORRECT | 34-pinout is ok, And what about Add here pinout for FDD 26-pin connector too.. | APPROVED | ||
| CORRECT | APPROVED | |||
| ERROR FIXED | in the first diagram, /DSKCHG should be marked as input, not as output. The signal will be delivered by the drive and received by the controller. | APPROVED | ||
| ERROR FIXED | Pin 5 is the keyed (missing) pin, not pin 3 as shown here. | APPROVED | ||
| CORRECT | Disregard previous comment about keying. Some floppy cables get pin 5 keyed, but the drives are keyed on pin 3. | APPROVED | ||
| 2009-07-15 03:21:16 | rev. 4 | CORRECT | APPROVED | |
| 2009-08-28 11:39:21 | rev. 4 | CORRECT | APPROVED | |
| 2012-01-05 17:53:19 | rev. 4 | CORRECT | APPROVED | |
| 2012-02-20 10:08:08 | rev. 4 | CORRECT | APPROVED | |
| 2012-04-20 21:39:42 | rev. 4 | CORRECT | The only one that I could spot was a " | APPROVED |
| 2012-07-12 00:31:28 | rev. 4 | CORRECT | APPROVED | |
| 2012-07-23 19:08:10 | rev. 4 | CORRECT | APPROVED | |
| 2012-08-17 02:02:16 | rev. 4 | CORRECT | APPROVED | |
| 2013-01-05 01:52:38 | rev. 4 | CORRECT | APPROVED | |
| 2013-01-19 03:13:21 | rev. 4 | CORRECT | APPROVED | |
| 2013-01-30 20:24:21 | rev. 4 | CORRECT | APPROVED | |
| 2013-02-25 03:14:26 | rev. 4 | CORRECT | APPROVED | |
| 2013-04-05 11:14:00 | rev. 4 | CORRECT | APPROVED | |
| 2013-11-02 15:25:12 | rev. 4 | INCORRECT | In description of Shugart interface signals DS3 and INUSE are swapped (see jumper IU setting of FD-55-GFR). Not shure, but pin34 Ready/DiskChange is the same on PC and Shugart and direction is from FDD to FDC. | APPROVED |
| 2013-12-01 17:00:43 | rev. 4 | CORRECT | I want to make absolutely SURE, you know that I have worked on these machines, and have read the DOCUMENTATION. This article is ACCURATE. THANK YOU. | APPROVED |
| 2014-03-04 01:28:06 | rev. 5 | CORRECT | APPROVED | |
| 2014-07-29 06:42:20 | rev. 5 | ERROR FIXED | Shugart interface pinout is incorrect: * Pin 4 should be /INUSE * Pin 6 should be /DS3 * Pin 34 direction should be from drive to controller | APPROVED |
| 2014-09-16 20:55:53 | rev. 5 | CORRECT | APPROVED | |
| 2014-11-23 20:47:47 | rev. 6 | INCORRECT | Half of pinout is missing, which pin on IBM interface is key pin? | APPROVED |
| 2015-05-24 11:24:19 | rev. 6 | ERROR FIXED | "only the connector after the cable should be used" I think it was supposed to say "after the twist". | APPROVED |
| 2016-07-09 23:48:20 | rev. 7 | CORRECT | APPROVED | |
| 2016-07-18 06:55:44 | rev. 7 | CORRECT | APPROVED | |
| 2016-11-14 15:25:04 | rev. 7 | CORRECT | APPROVED | |
| 2016-12-18 19:08:56 | rev. 7 | CORRECT | APPROVED | |
| 2017-02-03 20:26:20 | rev. 7 | CORRECT | APPROVED | |
| 2017-02-05 12:49:17 | rev. 7 | CORRECT | APPROVED | |
| 2017-02-10 21:59:31 | rev. 7 | CORRECT | APPROVED | |
| 2018-09-05 17:29:27 | rev. 10 | CORRECT | APPROVED | |
| 2018-10-16 08:38:29 | rev. 10 | CORRECT | No errors. I have the original IBM PC Technical Reference book in my hands, and page 1-181 verifies your list. If you are a nitpicker for details, you might want to note that originally, on the 360KB floppy drives, pin 2 was unused. It became Density Select when the 1.2Megabyte drives were used in the PC/AT. Nice web site that you have there. | APPROVED |
| 2018-10-20 13:02:43 | rev. 10 | CORRECT | APPROVED | |
| 2019-03-13 18:19:40 | rev. 10 | CORRECT | APPROVED | |
| 2019-06-18 11:54:01 | rev. 10 | CORRECT | APPROVED | |
| 2019-06-23 21:53:55 | rev. 10 | CORRECT | APPROVED | |
| 2019-09-11 20:21:51 | rev. 10 | CORRECT | APPROVED | |
| 2019-09-20 17:12:03 | rev. 10 | CORRECT | APPROVED | |
| 2019-11-09 13:19:51 | rev. 10 | CORRECT | APPROVED | |
| 2019-12-02 21:11:38 | rev. 10 | ERROR FIXED | I think the direction arrow for /REDWC is pointing the wrong way. Surely the drive needs to tell the computer the density. | APPROVED |
| 2019-12-02 21:17:14 | rev. 10 | ERROR FIXED | Looks like the /DCD is pointing the wrong way on the Shugart interface as well. | APPROVED |
| 2020-08-04 09:23:14 | rev. 12 | CORRECT | APPROVED | |
| 2020-10-14 23:41:26 | rev. 12 | CORRECT | APPROVED | |
| 2021-10-25 15:10:01 | rev. 12 | CORRECT | APPROVED | |
| 2023-01-04 00:36:29 | rev. 12 | ERROR FIXED | Direction of arrow in /REDWC is incorrect. In reality PC tells floppy drive what speed is needed (and in reality later floppy drives don't need this info as they automatically read it from floppy hd/dd hole). | APPROVED |
| 2023-01-07 21:09:45 | rev. 12 | ERROR FIXED | It seems that my request to turn direction for REDWC is not approved. Your site is only place that says this direction. Here proof for my request (3 specifications explaining how it goes): https://archive.org/details/bitsavers_samsungfloD321B070103_614642 http://www.buchty.net/casio/files/82077.pdf https://www.hermannseib.com/documents/floppy.pdf Also note that this was correct before 2019-12-02 when someone said that he "thinks" that direction is wrong. | APPROVED |
| 2023-03-11 05:02:28 | rev. 13 | CORRECT | APPROVED | |
| 2023-05-20 13:15:27 | rev. 13 | CORRECT | APPROVED |
| Date | Content Revision |
Author | Comment |
|---|---|---|---|
| 2008-07-27 20:59:31 | rev. 3 | Sven Olaf Kamphuis | added key pin on mainboard info |
| 2010-07-25 12:44:01 | rev. 4 | Malvineous | Clarified meaning of shared pin |
| 2015-07-24 00:02:27 | rev. 7 | Kikinou | Details on title |
| 2018-04-06 21:29:01 | rev. 9 | Peter Bye | For Dummies and Ol 'arts - get info on Odd Num Pins right at TOP! |
Pinouts.ru > Pinout of Floppy Diskdrive and layout of 34 pin IDC male connector and 34 pin IDC female connector |
should be correct |