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DIY:Floppy Drives

2022-12-20T12:19:18Z

Smanux: Fixed the Drive Select pin 4 description

=== Preface ===

This document shows pinning list, wiring diagrams and signal descriptions found on a CPC6128.

 

=== Multi-Adaptor Cable for External Floppies / HxC emulator ===

[[Image:Floppy_Cable.png|800px|centre]]

=== Adaptor Cable for Internal Floppies / HxC emulator ===

This cable assumes that the drive has been set to DS0 / ID0 and provides a ready signal. For the HxC not a problem, just a simple jumper setting, for floppies this may involve making some mods to the drive.

[[Image:Internal_HxC_Cable.png|800px|centre]]

I've shown the cable from several views to highlight the fact that the connectors don't face the same way on the cable.

First crimp the 26way connector as shown in the diagram. Then split the first 6 wires starting from the side of the red wire. These 6 wires need to be shifted 2 cavities further over before being crimped into the 36way connector. Wire 26 goes directly to pin 34 of the floppy connector. Make sure the keyways / orientation slots of both connectors are as shown in the diagram. The cable needs no bridges, switches or anything else. When you are finished, you should have a cable looking something like this:

[[Image:HxC Adaptor.jpg|600px|centre]]

=== Signal assignment on connectors ===

==== Standard floppy connector 34pin ====
{| class="wikitable"
! Floppy connector !!colspan="2"| Signal description
|-
| 1..33 || GND || Ground
|-
| 2 || /DCD || Disk Change Detect
|-
| 4 || /DS3 || Drive select 3 (Not always supported)
|-
| 6 || /INUSE || Open collector LED driver
|-
| 8 || /IND || Index
|-
| 10 || /DS0 || Drive select 0
|-
| 12 || /DS1 || Drive select 1
|-
| 14 || /DS2 || Drive select 2
|-
| 16 || /MTRON || Motor enable
|-
| 18 || /DIR || Direction select
|-
| 20 || /STEP || Head step
|-
| 22 || /WDAT || Write data
|-
| 24 || /WGAT || Write gate
|-
| 26 || /TRK0 || Track 0
|-
| 28 || /WPT || Write protect
|-
| 30 || /RDAT || Read data
|-
| 32 || /S1 || Side select
|-
| 34 || /RDY || Ready/Disk change depending on drive configuration
|}

 

==== CPC-CD201 (internal floppy 26pin connector) ====

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

 

==== CPC-PL-9 (external floppy 34pin centronics connector) ====

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

 

=== Pinning translation between different connectors (CPC-PL-9, Centronics 36pin, Floppy connector 34pin) ===
<pre>Translation from CPC-PL-9 via Centronics 36 pin connector to floppy connector 34pin
===================================================================================
(flat cable / crimp variant view)

+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---- GND
| | | | | | | | | | | | | | | | |
Floppy connector 34pin 33 31 29 27 25 23 21 19 17 15 13 11 09 07 05 03 01 NC
Centronics 36pin 18 17 16 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01
Amstard CPC-PL-9 02 04 06 08 10 12 14 16 18 20 22 24 26 28 30 32 34 NC
**++**++**++**++**++**++**++**++**++**++**++**++**++**++**++**++**++**++
Amstard CPC-PL-9 01 03 05 07 09 11 13 15 17 19 21 23 25 27 29 31 33 NC
Centronics 36pin 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19
Floppy connector 34pin 34 32 30 28 26 24 22 20 18 16 14 12 10 08 06 04 02 NC
| | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | +-- NC
| | | | | | | | | | | | | | | | +------ +5V
| | | | | | | | | | | | | | | +---------- +5V
| | | | | | | | | | | | | | +-------------- +5V
| | | | | | | | | | | | | +------------------ /IND
| | | | | | | | | | | | +---------------------- NC
| | | | | | | | | | | +-------------------------- /DRV1
| | | | | | | | | | +------------------------------ +5V
| | | | | | | | | +---------------------------------- /MED1
| | | | | | | | +-------------------------------------- /DIR
| | | | | | | +------------------------------------------ /STEP
| | | | | | +---------------------------------------------- /WDAT
| | | | | +-------------------------------------------------- /WGAT
| | | | +------------------------------------------------------ /TRK0
| | | +---------------------------------------------------------- /WPT
| | +-------------------------------------------------------------- /RDAT
| +------------------------------------------------------------------ /S1
+---------------------------------------------------------------------- /RDY

**/++ Flatcable signal</pre>
 

=== Wiring diagrams ===

==== External floppy connector CPC-PL-9 to standard floppy connector 34pin ====

(flat cable / crimp variant view)

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

{| 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
|}

 

==== Internal floppy connector CD201 to standard floppy connector 34pin ====

(flat cable / crimp variant view)

Note: Disconnect wire 24-32 /S1 if you use a side selector switch which is connected to the floppy drive.

{| class="wikitable"
!width="33%"| CD201 !!width="33%"| PCF !!width="33%"| 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
|}

=== Issues ===

==== Floppy drive ====

* This cables work for drive which are jumpered as drive 1/DS1. This is normally the default selection on drive delivery.
* Make sure you find a drive which has the possibility to generate a ready signal instead of a disc change signal.

==== Disk issues ====

If you think about to use a HD drive, make sure to close the HD detection hole on your disk. </pre>

[[Category:DIY]]

Modify PC floppy drives

2022-12-20T10:49:13Z

Smanux: Clarify the DC/RDY selector

This document explains how to modify some PC floppy drives to output a RDY-Singal. This signal is required by the CPC for best compatibility.

== Samsung SFD-321B ==

This is my (SpaceRat) choice, as it was possible to buy this drive new right away from normal computer stores at least in 2006.

You need to remove the shield on the bottom of the drive first. On the circuit board, just below the red+black+white cable to the motor, you will find two soldering bridges labelled DC and RDY, with a zero Ohm SMD-resistor on the "DC" bridge. Unsolder it there and resolder it on the bridge labelled "RDY".

The Samsung SFD-321B is also hardwired to HD-disks (High Density), we will need to change this to DD (Double Density):

Also on the circuit board, right behind the push button, you will find an empty space labelled SW1, next to it is a soldering bridge labelled C16, destroy the connection it makes by unsoldering it and/or scratching away the soldering tin between the two points. The drive will now "see" all 3½" disks as DD, regardless of their actual specifications, so as long as you only use the disks on the CPC, you don't even need to close the HD-index-hole, though you will still need to do this on your PC. This peculiarity of this drive also means that you probably don't want to have it in your PC, as you probably wouldn't want to modify your PC drive to DD-only just to be able to exchange disks between CPC and PC. So before you go and buy a Samsung SFD-321B for your CPC, check your PC first and if there is the Samsung inside, get a new, non-Samsung, for your PC instead, using the existing Samsung for your CPC.

== Mitsumi D359T3 ==

There is a small SMD resistor on the back of the circuit board marked with '''D.C.''' (Disk Change).

Next to it is an empty solder pad marked with '''RDY''' (Ready). Desolder the resistor and move it to the RDY-Position. The drive now outputs a Ready signal instead of a Disk Change signal.

Additional information and pictures at [http://www.sax.de/~zander/bic/bic_tip.html] (german, but at least the picture is helpful)

[[Image:D359T3.jpg|600px|D359T3 click to enlarge]]

== Mitsumi D359T5 ==

see the section about the D359T3

== Mitsumi D359T6 ==

see the section about the D359T3

== NEC FDH1231H ==

Join PIN1 on the flat cable connector with test point 15 (TP15), located under the black sticker.

Break the connection between PIN1 and the small chip nearby.

== Other Links ==
[[Drive Compatibility]] Local article about CPC-compatible drives

[http://www.pitsch.de/stuff/amiga/floppy.htm Enabling the Ready Signal] - German Site with instructions and photos of how to enable the ready signal for many common floppy drives.

[[Category:DIY]][[Category:DATA Storage]][[Category:Non CPC Computers]]

Modify PC floppy drives

2022-12-20T10:22:11Z

Smanux: Typo

This document explains how to modify some PC floppy drives to output a RDY-Singal. This signal is required by the CPC for best compatibility.

== Samsung SFD-321B ==

This is my (SpaceRat) choice, as it was possible to buy this drive new right away from normal computer stores at least in 2006.

You need to remove the shield on the bottom of the drive first. On the circuit board, just below the red+black+white cable to the motor, you will find two soldering bridges labelled DC and RDY, with a zero Ohm SMD-resistor on the "DC" bridge. Unsolder it there and resolder it on the bridge labelled "RDY".

The Samsung SFD-321B is also hardwired to HD-disks (High Density), we will need to change this to DD (Double Density):

Also on the circuit board, right behind the push button, you will find an empty space labelled SW1, next to it is a soldering bridge labelled C16, destroy the connection it makes by unsoldering it and/or scratching away the soldering tin between the two points. The drive will now "see" all 3½" disks as DD, regardless of their actual specifications, so as long as you only use the disks on the CPC, you don't even need to close the HD-index-hole, though you will still need to do this on your PC. This peculiarity of this drive also means that you probably don't want to have it in your PC, as you probably wouldn't want to modify your PC drive to DD-only just to be able to exchange disks between CPC and PC. So before you go and buy a Samsung SFD-321B for your CPC, check your PC first and if there is the Samsung inside, get a new, non-Samsung, for your PC instead, using the existing Samsung for your CPC.

== Mitsumi D359T3 ==

There is a small SMD resistor on the back of the circuit board marked with the number '''D.C.'''.

Next to it is an empty solder pad marked with '''RDY'''. Desolder the resistor and move it to the RDY-Position. The drive now outputs a RDY-Signal.

Additional information and pictures at [http://www.sax.de/~zander/bic/bic_tip.html] (german, but at least the picture is helpful)

[[Image:D359T3.jpg|600px|D359T3 click to enlarge]]

== Mitsumi D359T5 ==

see the section about the D359T3

== Mitsumi D359T6 ==

see the section about the D359T3

== NEC FDH1231H ==

Join PIN1 on the flat cable connector with test point 15 (TP15), located under the black sticker.

Break the connection between PIN1 and the small chip nearby.

== Other Links ==
[[Drive Compatibility]] Local article about CPC-compatible drives

[http://www.pitsch.de/stuff/amiga/floppy.htm Enabling the Ready Signal] - German Site with instructions and photos of how to enable the ready signal for many common floppy drives.

[[Category:DIY]][[Category:DATA Storage]][[Category:Non CPC Computers]]

DIY:Floppy Drives

2022-12-20T10:17:38Z

Smanux: Table formatting for the pin translation tables

=== Preface ===

This document shows pinning list, wiring diagrams and signal descriptions found on a CPC6128.

 

=== Multi-Adaptor Cable for External Floppies / HxC emulator ===

[[Image:Floppy_Cable.png|800px|centre]]

=== Adaptor Cable for Internal Floppies / HxC emulator ===

This cable assumes that the drive has been set to DS0 / ID0 and provides a ready signal. For the HxC not a problem, just a simple jumper setting, for floppies this may involve making some mods to the drive.

[[Image:Internal_HxC_Cable.png|800px|centre]]

I've shown the cable from several views to highlight the fact that the connectors don't face the same way on the cable.

First crimp the 26way connector as shown in the diagram. Then split the first 6 wires starting from the side of the red wire. These 6 wires need to be shifted 2 cavities further over before being crimped into the 36way connector. Wire 26 goes directly to pin 34 of the floppy connector. Make sure the keyways / orientation slots of both connectors are as shown in the diagram. The cable needs no bridges, switches or anything else. When you are finished, you should have a cable looking something like this:

[[Image:HxC Adaptor.jpg|600px|centre]]

=== Signal assignment on connectors ===

==== Standard floppy connector 34pin ====
{| class="wikitable"
! Floppy connector !!colspan="2"| Signal description
|-
| 1..33 || GND || Ground
|-
| 2 || /DCD || Disk Change Detect
|-
| 4 || /DS4 || Drive selct 4 (Not always supported)
|-
| 6 || /INUSE || Open collector LED driver
|-
| 8 || /IND || Index
|-
| 10 || /DS0 || Drive select 0
|-
| 12 || /DS1 || Drive select 1
|-
| 14 || /DS2 || Drive select 2
|-
| 16 || /MTRON || Motor enable
|-
| 18 || /DIR || Direction select
|-
| 20 || /STEP || Head step
|-
| 22 || /WDAT || Write data
|-
| 24 || /WGAT || Write gate
|-
| 26 || /TRK0 || Track 0
|-
| 28 || /WPT || Write protect
|-
| 30 || /RDAT || Read data
|-
| 32 || /S1 || Side select
|-
| 34 || /RDY || Ready/Disk change depending on drive configuration
|}

 

==== CPC-CD201 (internal floppy 26pin connector) ====

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

 

==== CPC-PL-9 (external floppy 34pin centronics connector) ====

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

 

=== Pinning translation between different connectors (CPC-PL-9, Centronics 36pin, Floppy connector 34pin) ===
<pre>Translation from CPC-PL-9 via Centronics 36 pin connector to floppy connector 34pin
===================================================================================
(flat cable / crimp variant view)

+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---- GND
| | | | | | | | | | | | | | | | |
Floppy connector 34pin 33 31 29 27 25 23 21 19 17 15 13 11 09 07 05 03 01 NC
Centronics 36pin 18 17 16 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01
Amstard CPC-PL-9 02 04 06 08 10 12 14 16 18 20 22 24 26 28 30 32 34 NC
**++**++**++**++**++**++**++**++**++**++**++**++**++**++**++**++**++**++
Amstard CPC-PL-9 01 03 05 07 09 11 13 15 17 19 21 23 25 27 29 31 33 NC
Centronics 36pin 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19
Floppy connector 34pin 34 32 30 28 26 24 22 20 18 16 14 12 10 08 06 04 02 NC
| | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | +-- NC
| | | | | | | | | | | | | | | | +------ +5V
| | | | | | | | | | | | | | | +---------- +5V
| | | | | | | | | | | | | | +-------------- +5V
| | | | | | | | | | | | | +------------------ /IND
| | | | | | | | | | | | +---------------------- NC
| | | | | | | | | | | +-------------------------- /DRV1
| | | | | | | | | | +------------------------------ +5V
| | | | | | | | | +---------------------------------- /MED1
| | | | | | | | +-------------------------------------- /DIR
| | | | | | | +------------------------------------------ /STEP
| | | | | | +---------------------------------------------- /WDAT
| | | | | +-------------------------------------------------- /WGAT
| | | | +------------------------------------------------------ /TRK0
| | | +---------------------------------------------------------- /WPT
| | +-------------------------------------------------------------- /RDAT
| +------------------------------------------------------------------ /S1
+---------------------------------------------------------------------- /RDY

**/++ Flatcable signal</pre>
 

=== Wiring diagrams ===

==== External floppy connector CPC-PL-9 to standard floppy connector 34pin ====

(flat cable / crimp variant view)

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

{| 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
|}

 

==== Internal floppy connector CD201 to standard floppy connector 34pin ====

(flat cable / crimp variant view)

Note: Disconnect wire 24-32 /S1 if you use a side selector switch which is connected to the floppy drive.

{| class="wikitable"
!width="33%"| CD201 !!width="33%"| PCF !!width="33%"| 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
|}

=== Issues ===

==== Floppy drive ====

* This cables work for drive which are jumpered as drive 1/DS1. This is normally the default selection on drive delivery.
* Make sure you find a drive which has the possibility to generate a ready signal instead of a disc change signal.

==== Disk issues ====

If you think about to use a HD drive, make sure to close the HD detection hole on your disk. </pre>

[[Category:DIY]]

DIY:Floppy Drives

2022-12-20T09:57:17Z

Smanux: Table formatting for the connectors descriptions

=== Preface ===

This document shows pinning list, wiring diagrams and signal descriptions found on a CPC6128.

 

=== Multi-Adaptor Cable for External Floppies / HxC emulator ===

[[Image:Floppy_Cable.png|800px|centre]]

=== Adaptor Cable for Internal Floppies / HxC emulator ===

This cable assumes that the drive has been set to DS0 / ID0 and provides a ready signal. For the HxC not a problem, just a simple jumper setting, for floppies this may involve making some mods to the drive.

[[Image:Internal_HxC_Cable.png|800px|centre]]

I've shown the cable from several views to highlight the fact that the connectors don't face the same way on the cable.

First crimp the 26way connector as shown in the diagram. Then split the first 6 wires starting from the side of the red wire. These 6 wires need to be shifted 2 cavities further over before being crimped into the 36way connector. Wire 26 goes directly to pin 34 of the floppy connector. Make sure the keyways / orientation slots of both connectors are as shown in the diagram. The cable needs no bridges, switches or anything else. When you are finished, you should have a cable looking something like this:

[[Image:HxC Adaptor.jpg|600px|centre]]

=== Signal assignment on connectors ===

==== Standard floppy connector 34pin ====
{| class="wikitable"
! Floppy connector !!colspan="2"| Signal description
|-
| 1..33 || GND || Ground
|-
| 2 || /DCD || Disk Change Detect
|-
| 4 || /DS4 || Drive selct 4 (Not always supported)
|-
| 6 || /INUSE || Open collector LED driver
|-
| 8 || /IND || Index
|-
| 10 || /DS0 || Drive select 0
|-
| 12 || /DS1 || Drive select 1
|-
| 14 || /DS2 || Drive select 2
|-
| 16 || /MTRON || Motor enable
|-
| 18 || /DIR || Direction select
|-
| 20 || /STEP || Head step
|-
| 22 || /WDAT || Write data
|-
| 24 || /WGAT || Write gate
|-
| 26 || /TRK0 || Track 0
|-
| 28 || /WPT || Write protect
|-
| 30 || /RDAT || Read data
|-
| 32 || /S1 || Side select
|-
| 34 || /RDY || Ready/Disk change depending on drive configuration
|}

 

==== CPC-CD201 (internal floppy 26pin connector) ====

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

 

==== CPC-PL-9 (external floppy 34pin centronics connector) ====

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

 

=== Pinning translation between different connectors (CPC-PL-9, Centronics 36pin, Floppy connector 34pin) ===
<pre>Translation from CPC-PL-9 via Centronics 36 pin connector to floppy connector 34pin
===================================================================================
(flat cable / crimp variant view)

+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---- GND
| | | | | | | | | | | | | | | | |
Floppy connector 34pin 33 31 29 27 25 23 21 19 17 15 13 11 09 07 05 03 01 NC
Centronics 36pin 18 17 16 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01
Amstard CPC-PL-9 02 04 06 08 10 12 14 16 18 20 22 24 26 28 30 32 34 NC
**++**++**++**++**++**++**++**++**++**++**++**++**++**++**++**++**++**++
Amstard CPC-PL-9 01 03 05 07 09 11 13 15 17 19 21 23 25 27 29 31 33 NC
Centronics 36pin 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19
Floppy connector 34pin 34 32 30 28 26 24 22 20 18 16 14 12 10 08 06 04 02 NC
| | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | +-- NC
| | | | | | | | | | | | | | | | +------ +5V
| | | | | | | | | | | | | | | +---------- +5V
| | | | | | | | | | | | | | +-------------- +5V
| | | | | | | | | | | | | +------------------ /IND
| | | | | | | | | | | | +---------------------- NC
| | | | | | | | | | | +-------------------------- /DRV1
| | | | | | | | | | +------------------------------ +5V
| | | | | | | | | +---------------------------------- /MED1
| | | | | | | | +-------------------------------------- /DIR
| | | | | | | +------------------------------------------ /STEP
| | | | | | +---------------------------------------------- /WDAT
| | | | | +-------------------------------------------------- /WGAT
| | | | +------------------------------------------------------ /TRK0
| | | +---------------------------------------------------------- /WPT
| | +-------------------------------------------------------------- /RDAT
| +------------------------------------------------------------------ /S1
+---------------------------------------------------------------------- /RDY

**/++ Flatcable signal</pre>
 

=== Wireing diagrams ===

==== External floppy connector CPC-PL-9 to standard floppy connector 34pin ====
<pre>External floppy connector PL-9 to standard floppy connector 34pin
=================================================================
(flat cable / crimp variant view)

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

PL9 CEN PCF 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

</pre>
 

==== Internal floppy connector CD201 to standard floppy connector 34pin ====
<pre>Internal floppy conntector CD201 to standard floppy connector 34pin
===================================================================
(flat cable / crimp variant view)

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>

=== Issues ===

==== Floppy drive ====

* This cables work for drive which are jumpered as drive 1/DS1. This is normally the default selection on drive delivery.
* Make sure you find a drive which has the possibility to generate a ready signal instead of a disc change signal.

==== Disk issues ====

If you think about to use a HD drive, make sure to close the HD detection hole on your disk. </pre>

[[Category:DIY]]

DIY:Floppy Drives

2022-12-20T09:24:39Z

Smanux: Improved formatting

=== Preface ===

This document shows pinning list, wiring diagrams and signal descriptions found on a CPC6128.

 

=== Multi-Adaptor Cable for External Floppies / HxC emulator ===

[[Image:Floppy_Cable.png|800px|centre]]

=== Adaptor Cable for Internal Floppies / HxC emulator ===

This cable assumes that the drive has been set to DS0 / ID0 and provides a ready signal. For the HxC not a problem, just a simple jumper setting, for floppies this may involve making some mods to the drive.

[[Image:Internal_HxC_Cable.png|800px|centre]]

I've shown the cable from several views to highlight the fact that the connectors don't face the same way on the cable.

First crimp the 26way connector as shown in the diagram. Then split the first 6 wires starting from the side of the red wire. These 6 wires need to be shifted 2 cavities further over before being crimped into the 36way connector. Wire 26 goes directly to pin 34 of the floppy connector. Make sure the keyways / orientation slots of both connectors are as shown in the diagram. The cable needs no bridges, switches or anything else. When you are finished, you should have a cable looking something like this:

[[Image:HxC Adaptor.jpg|600px|centre]]

=== Signal assignment on connectors ===

==== Standard floppy connector 34pin ====
<pre>Floppy | Signal description
connector | for standard floppy connector 34pin
----------+---------------------------------------------------
1..33 | GND
2 | /DCD Disk Change Detect
4 | /DS4 Drive selct 4 (Not always supported)
6 | /INUSE Open collector LED driver
8 | /IND Index
10 | /DS0 Drive select 0
12 | /DS1 Drive select 1
14 | /DS2 Drive select 2
16 | /MTRON Motor enable
18 | /DIR Direction select
20 | /STEP Head step
22 | /WDAT Write data
24 | /WGAT Write gate
26 | /TRK0 Track 0
28 | /WPT Write protect
30 | /RDAT Read data
32 | /S1 Side select
34 | /RDY Ready/Disk change depending on drive configuration</pre>
 

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

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

=== Pinning translation between different connectors (CPC-PL-9, Centronics 36pin, Floppy connector 34pin) ===
<pre>Translation from CPC-PL-9 via Centronics 36 pin connector to floppy connector 34pin
===================================================================================
(flat cable / crimp variant view)

+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---- GND
| | | | | | | | | | | | | | | | |
Floppy connector 34pin 33 31 29 27 25 23 21 19 17 15 13 11 09 07 05 03 01 NC
Centronics 36pin 18 17 16 15 14 13 12 11 10 09 08 07 06 05 04 03 02 01
Amstard CPC-PL-9 02 04 06 08 10 12 14 16 18 20 22 24 26 28 30 32 34 NC
**++**++**++**++**++**++**++**++**++**++**++**++**++**++**++**++**++**++
Amstard CPC-PL-9 01 03 05 07 09 11 13 15 17 19 21 23 25 27 29 31 33 NC
Centronics 36pin 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19
Floppy connector 34pin 34 32 30 28 26 24 22 20 18 16 14 12 10 08 06 04 02 NC
| | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | +-- NC
| | | | | | | | | | | | | | | | +------ +5V
| | | | | | | | | | | | | | | +---------- +5V
| | | | | | | | | | | | | | +-------------- +5V
| | | | | | | | | | | | | +------------------ /IND
| | | | | | | | | | | | +---------------------- NC
| | | | | | | | | | | +-------------------------- /DRV1
| | | | | | | | | | +------------------------------ +5V
| | | | | | | | | +---------------------------------- /MED1
| | | | | | | | +-------------------------------------- /DIR
| | | | | | | +------------------------------------------ /STEP
| | | | | | +---------------------------------------------- /WDAT
| | | | | +-------------------------------------------------- /WGAT
| | | | +------------------------------------------------------ /TRK0
| | | +---------------------------------------------------------- /WPT
| | +-------------------------------------------------------------- /RDAT
| +------------------------------------------------------------------ /S1
+---------------------------------------------------------------------- /RDY

**/++ Flatcable signal</pre>
 

=== Wireing diagrams ===

==== External floppy connector CPC-PL-9 to standard floppy connector 34pin ====
<pre>External floppy connector PL-9 to standard floppy connector 34pin
=================================================================
(flat cable / crimp variant view)

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

PL9 CEN PCF 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

</pre>
 

==== Internal floppy connector CD201 to standard floppy connector 34pin ====
<pre>Internal floppy conntector CD201 to standard floppy connector 34pin
===================================================================
(flat cable / crimp variant view)

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>

=== Issues ===

==== Floppy drive ====

* This cables work for drive which are jumpered as drive 1/DS1. This is normally the default selection on drive delivery.
* Make sure you find a drive which has the possibility to generate a ready signal instead of a disc change signal.

==== Disk issues ====

If you think about to use a HD drive, make sure to close the HD detection hole on your disk. </pre>

[[Category:DIY]]