Fast DiskROM 8250/55/80

Fast Diskrom for the Philips NMS 8250
Fast Diskrom for the Philips NMS 8255
Fast Diskrom for the Philips NMS 8280

Categories
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

Categories
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)