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Howto

Making a ALPS DF354H127F MSX Compatible

Here’s a howto for making a ALPSDF354H127F compatible with the MSX.

First cut the traces of Pin 2 & Pin 34 (I use a 2mm drill on point A & B in the picture)

Setting the drive to DS0:
Change the solder jumper from DS1 to DS0

Put Disk Change on pin 2 (Not necessary for some Philips Models)
Solder a wire from pin5 of the controller IC to Pin 2 of the connector. (Red Arrow)

Put READY on pin 34:
Solder a wire from pin 32 of the controller IC to Pin 34 of the connector (Blue Wire)

ALPSDF354H127F

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Howto

Making a Mitsumi D359M3D MSX Compatible

Here’s a howto for making a Mitsumi D359M3D compatible with the MSX.

 

Setting the drive to DS0:
Cut the trace from the IC to pin 12
Solder a wire from the cutted trace (on the IC side) to pin 12 (brown wire)

On my drive I used a quick & dirty fix, to put a solderjumper on pin 10-12
This way the drive is reconized as Drive A, but can’t be used in machines with 2 drives.

Put Disk Change on pin 2:
Make a solderjumper on DEN2

Put READY on pin 34:
Cut the trace from pin 34
Solder a wire from pin 34 to the 2nd solderpad from the left of the 6 pads on a row (white wire)

D359M3D

 

 

Seeing multiple Mitsumi Drives having the NCL039 controller, it is almost save to assume that the RDY signal can be found on pin 35 of th NCL039. This makes it possible to make all drives using this IC MSX Compatible.

Now the drive can be used in your MSX (or in your Amiga or Korg or Yamaha)

Categories
Howto

Making a Mitsumi D359M3 MSX Compatible

Diskdrives are getting more & more scare to find. Specialy drives that can be made compatible with the MSX.

Here’s a howto for making a new revision of the Mitsumi D359M3 compatible with the MSX.

 

Setting the drive to DS0:
Cut the trace from the IC to pin 12
Solder a wire from the cutted trace (on the IC side) to pin 12 (brown wire)

Put Disk Change on pin 2:
Make a solderjumper on DEN2

Put READY on pin 34:
Cut the trace from pin 34
Solder a wire from pin 34 to the 2nd pin from the right of the flatcable (white wire)

 

D359M3 PCB D359M3

Now the drive can be used in your MSX (or in your Amiga or Korg or Yamaha)

Categories
Howto

Replace a Panasonic FS-A1F Diskdrive with a PC Drive.

This instruction shows how to connect a Samsung SFD-321B FDD to a :

Panasonic FS-A1F

On the Internet I found a couple of instructions on howto connect a PC drive to a Panasonic MSX. In my opinion these instructions are to complex and/or not 100% compatible with the original diskdrive.

This instruction works with older revisions of the Samsung SFD-321B.
Please make sure that the Samsung SFD-321B you use has a HD sensor (the newest revision of this drive does not have this sensor, causing no support for formatting 720kb DD disks)

To minimize the damage to the mainbord I chose to make a small convertor on a small prototype PCB.

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On the small PCB the following connections are made:

Signal 26 pin MSX 34 pin FDD
GND 01 Power Connector
RDY 02 34
+5V 03 Power Connector
Index 04 08
Drive Select 0 06 10
Motor ON 08 16
Side Select 10 32
Direction Select 14 18
Step 16 20
Write Data 18 22
Write Gate 20 24
Track 00 22 26
Write Protect 24 28
Read Data 26 30

To make the Samsung SFD-321B 100% compatibel the following modifications need te be maded.

Replace jumper DS1 to DS0 (To make it the A drive)
Replace jumper DC to RDY (To put the RDY signal on pin 34)
Put a jumper on OPA (this adds 720kb support)

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Since the diskdrive has a HD Disk sensor, you need to put a piece of tape on the HD hole. To overcome this, it is possible to remove the HD sensor.

2013-06-09 22.12.42

Now you’ve got a 100% compatible diskdrive, without modifications to your mainboard.