Changes

{| class="wikitable"! Floppy<prebr>Floppy connector !!colspan="2"| Signal descriptionconnector | for standard floppy connector 34pin----------+--------------------------------------------------- | 1..33 || GND || Ground |-| 2 || /DS (density select 1=low desnity / 0=high densityDCD || Disk Change Detect|-| 4 | NC| /DS3 || Drive select 3 (Not always supported)|-| 6 | NC| /INUSE || Open collector LED driver |-| 8 || /IND index || Index |-| 10 || /MED0 motor enable drive DS0 || Drive select 0 |-| 12 || /DRV1 drive DS1 || Drive select 1 |-| 14 || /DRV0 drive DS2 || Drive select 02 |-| 16 || /MED1 motor MTRON || Motor enable drive 1 |-| 18 || /DIR direction || Direction select |-| 20 || /STEP head || Head step |-| 22 || /WDAT write || Write data |-| 24 || /WGAT write || Write gate |-| 26 || /TRK0 track || Track 0 |-| 28 || /WPT write || Write protect |-| 30 || /RDAT read || Read data |-| 32 || /S1 side 1 || Side select |-| 34 || /RDY ready (or || Ready/DSKCHG) Disk change depending on model or drive configuration</pre> |} <br>

<pre>{| class="wikitable"!CPC-CD201 !!colspan="2"| Signal description | for CPC internal floppy 26 pin connector | <br>(numbering from Amstrads repair manual)----------+--------------------------------------------------|-| 1..25 || GND || Ground|-| 2 || /IND index|| Index|-| 4 || /DRV1 drive || Drive select 1|-| 6 || NC|-| 8 || /MED1 motor || Motor enable drive 1|-| 10 || /DIR direction || Direction select|-| 12 || /STEP head || Head step|-| 14 || /WDAT write || Write data|-| 16 || /WGAT write || Write gate|-| 18 || /TRK0 track || Track 0|-| 20 || /WPT write || Write protect|-| 22 || /RDAT read || Read data|-| 24 || /S1 side || Side 1 select|-| 26 || /RDY ready || Ready (or /DSKCHG) depending on model or drive configuration</pre> |} 

<pre>{| class="wikitable"! CPC-PL-9 !!colspan="2"| Signal description external | for CPC external floppy 34 pin centronics connector | <br>(numbering from Amstrads repair manual) ---------+-------------------------------------------------|- | 2..34 || GND || Ground|-| 33 || +5V |||-| 31 || +5V |||-| 29 || +5V |||-| 27 || /IND index|| Index|-| 25 || NC |||-| 23 || /DRV1 drive || Drive select 1|-| 21 || +5V |-| 19 || /MED1 motor || Motor enable drive 1|-| 17 || /DIR direction || Direction select|-| 15 || /STEP head || Head step|-| 13 || /WDAT write || Write data|-| 11 || /WGAT write || Write gate |-| 9 || /TRK0 track || Track 0 |-| 7 || /WPT write || Write protect |-| 5 || /RDAT read || Read data |-| 3 || /S1 side || Side 1 select |-| 1 || /RDY ready || Ready (or /DSKCHG) depending on model or drive configuration</pre> |} 

=== Wireing Wiring diagrams<br> ===

Note: Disconnect wire 03-35-32 /S1 if you use a side selector switch which is connected to the floppy drive.

PL9 {| class="wikitable"!width="25%"| PL-9 !!width="25%"| CEN !!width="25%"| PCF !!width="25%"| SIGNAL|-| 01 || 36 || 34 || /RDY|-| 02 || 18 || 33 || GND|-| 03 || 35 || 32 || /S1|-| 04 || 17 || 31 || GND|-| 05 || 34 || 30 || /RDAT|-| 06 || 16 || 29 || GND|-| 07 || 33 || 28 || /WPT|-| 08 || 15 || 27 || GND|-| 09 || 32 || 26 || /TRK0|-| 10 || 14 || 25 || GND|-| 11 || 31 || 24 || /WGAT|-| 12 || 13 || 23 || GND|-| 13 || 30 || 22 || /WDAT|-| 14 || 12 || 21 || GND|-| 15 || 29 || 20 || /STEP|-| 16 || 10 || 19 || GND|-| 17 || 28 || 18 || /DIR|-| 18 || 10 || 17 || GND|-| 19 || 27 || 16 || /MED1|-| 20 || 09 || 15 || GND|-| 21 || 26 || 14 || NC|-| 22 || 08 || 13 || GND|-| 23 || 25 || 12 || /DRV1|-| 24 || 07 || 11 || GND|-| 25 || 24 || 10 || NC|-| 26 || 06 || 09 || GND|-| 27 || 23 || 08 || /IND|-| 28 || 05 || 07 || GND|-| 29 || 22 || 06 || NC|-| 30 || 04 || 05 || GND|-| 31 || 21 || 04 || NC|-| 32 || 03 || 03 || GND|-| 33 || 20 || 02 || NC|-| 34 || 02 || 01 || GND -|- | || 19 -- || || NC -|- | || 01 -- || || NC|}

Note: Disconnect wire 24-32 /S1 if you use a side selector switch which is connected to the floppy drive. CD201 PCF SIGNAL 26 34 /RDY 25 33 GND 24 32 /S1 23 31 GND 22 30 /RDAT 21 29 GND 20 28 /WPT 19 27 GND 18 26 /TRK0 17 25 GND 16 24 /WGAT 15 23 GND 14 22 /WDAT 13 21 GND 12 20 /STEP 11 19 GND 10 18 /DIR 09 17 GND 08 16 /MED1 07 15 GND 06 14 NC 05 13 GND 04 12 /DRV1 11 GND 10 NC 03 09 GND 02 08 /IND 01 07 GND 06 NC 05 NC 04 NC 03 NC 02 NC 01 NC</pre>

</pre> ==== Disk issues<br> ====<pre>Disk issues============If you think about to use a HD drive, make sure to close the HD detection hole on your disk. <Still, be aware that the magnetic properties of SD disk and HD disk are different (the HD ones need a stronger magnetic field). When you close the HD detection hole, the drive assumes a SD disk and applies the weaker magnetic field. As a result, HD disks used as SD tend to work but not as reliably as real DD disk (discussed on [https:/pre>/www.lemonamiga.com/forum/viewtopic.php?t=14829 Using 1.44MB HD Disks in the Amiga... &#45; Lemon Amiga][https://groups.google.com/g/comp.sys.apple2/c/9mUL0vZwx6Q?pli=1 HD floppies in a DD drive.][https://www.vogons.org/viewtopic.php?t=46934 High density diskette in low&#45;density drive? \ VOGONS] ). [[Category:Hardware]][[Category:DIY]][[Category:DATA Storage]]