QL microdrive diode mods

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keyboardjunkie
ROM Dongle
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Joined: Mon Jun 03, 2019 11:25 am

QL microdrive diode mods

Post by keyboardjunkie »

Hi all,

I've been looking around to see if I can find a decent picture of where the diode mod goes on the QL microdrive PCBs.. Does anyone have a decent picture of the diode in-situ? I can see that the negative side of the 1N4148 looks like it goes to the closest leg of R100/102 and the positive side goes between a polystyrene cap and resistor on the edge of the board?

Can anyone give me a set of clearer instructions?

Thanks for any help,

Mark.


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Andrew
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Re: QL microdrive diode mods

Post by Andrew »

I received these photos from Charles Ingley - and modded my microdives accordingly
Attachments
MD_rear.jpg
MD_TOP2.jpg
MD_top.jpg


keyboardjunkie
ROM Dongle
Posts: 21
Joined: Mon Jun 03, 2019 11:25 am

Re: QL microdrive diode mods

Post by keyboardjunkie »

Hey Andrew,

Exactly what I was looking for - thank you sir!

Mark.


Maskenlos
Over Heated PSU
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Re: QL microdrive diode mods

Post by Maskenlos »

Hi,

what is the aim of this diode mod?

Stephan


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RalfR
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Re: QL microdrive diode mods

Post by RalfR »

Maskenlos wrote:Hi,

what is the aim of this diode mod?
I once put a Diode in the drive select, so I could use one mdv for 1 and 2.


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Maskenlos
Over Heated PSU
Posts: 138
Joined: Sat Nov 03, 2018 12:14 pm

Re: QL microdrive diode mods

Post by Maskenlos »

Thanks Ralf!

By the way, the Oqtadrive can do such a mapping as well.

Stephan


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