HxC Floppy Drive Emulator

HxC Floppy Drive Emulator general information and news
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 Post subject: FD1138T and FD1138C
PostPosted: Wed Dec 30, 2015 3:42 pm 
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I have a PC-9821 SE that uses this type of floppy drives. They are 2mode FDD ( 640K - 1,2M ) 26pin

I would want to know if it's possible to connect HxC ( making an adaptor, of course ) to my PC-9821.

Thanks !


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 Post subject: Re: FD1138T and FD1138C
PostPosted: Mon Jan 04, 2016 8:35 am 
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PepAlacant wrote:
I have a PC-9821 SE that uses this type of floppy drives. They are 2mode FDD ( 640K - 1,2M ) 26pin

I would want to know if it's possible to connect HxC ( making an adaptor, of course ) to my PC-9821.

Thanks !



yes it is.
Is a VFO board needed ?


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 Post subject: Re: FD1138T and FD1138C
PostPosted: Mon Jan 04, 2016 5:52 pm 
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Joined: Wed Dec 30, 2015 3:33 pm
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http://muraoka.ocnk.net/data/muraoka/pr ... da1b82.jpg

This one is the model.

I don't know what an VFO is.

Thanks.

If this VFO is needed, what I have to do ?


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 Post subject: Re: FD1138T and FD1138C
PostPosted: Mon Jan 04, 2016 6:28 pm 
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I'm reading about and it doesn't have VFO.

So I will need an extra board ? How much is this ? because I need HxC and the board, then.


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 Post subject: Re: FD1138T and FD1138C
PostPosted: Mon Jan 18, 2016 8:58 am 
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PepAlacant wrote:
I'm reading about and it doesn't have VFO.

So I will need an extra board ? How much is this ? because I need HxC and the board, then.



If the original drive don't have the VFO, no extra VFO board is needed.


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 Post subject: Re: FD1138T and FD1138C
PostPosted: Mon Apr 04, 2016 8:50 pm 
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Joined: Sun Jan 30, 2011 12:22 am
Posts: 60
Hi, today I successfully installed an SD HxC Floppy Emulator on a NEC PC-9821As2 which originally use two FD1138T FDDs.I built a simple adapter from 26PIN of the FD1138T (using original FDD cable, header on motherboard has 30 pins) to 34PIN of the HxC, I took power from the HDD connector using a molex to berg cable (but if you want, you can take it also from PC-9821 FDD cable since +5v is present on pin 1-3-5).Pinout of FD1138T can be found on this document, I think this is valid also for other 26PIN FDDs that come without VFO like FD1138C (not 100% sure though, since there are variants of same model):

http://www.geocities.jp/cpuparts98/FDD/FDDCABLE/3426CONV.pdf

Here are some pictures and a link of a video.

https://www.youtube.com/watch?v=UhcG2ini8dM


Attachments:
26PIN_to_34PIN_adapter_bottom.JPG
26PIN_to_34PIN_adapter_bottom.JPG [ 170.27 KiB | Viewed 2108 times ]
26PIN_to_34PIN_adapter_top.JPG
26PIN_to_34PIN_adapter_top.JPG [ 157.14 KiB | Viewed 2108 times ]
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 Post subject: Re: FD1138T and FD1138C
PostPosted: Wed Jun 08, 2016 11:11 pm 
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Thanks for the detailed feedback !
:D


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 Post subject: Re: FD1138T and FD1138C
PostPosted: Wed Jun 08, 2016 11:12 pm 
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Joined: Sun Jan 30, 2011 12:22 am
Posts: 60
Thanks to you and your wonderful device, Jeff!


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