QL's external MDV port

[1024MAK]

Hey, great news. I'm glad you found the problem.

I had been scratching my head, because I could not see anything wrong...

Mark

[Bloodnok]

Hi Tomas,

Great work! Writing and formatting all OK?

[tcat]

Hi Charles,

Thank you for taking your interest, R/W test alright, format due to test.

You may follow my MDV observations here, where I have had some questions regarding R/W and Erase head resistance.

http://theqlforum.com/viewtopic.php?f=2& ... 204#p14204

Tomas

[tcat]

Hi,

I have designed another PCB, that swaps signals on the left edge, so is useful to connect with ribbon cable.
Each board has insignia 'mPort', the one that swaps signals has an 'X', so I can connect in theory up to 6 external drives. Doing that, only one 'mPort-X', and 5 'mPort's are needed.

mPort - X - board

two MDs connected in a chain

Tomas

[vanpeebles]

Outsoft will be your new best friend if he can use that many microdrives

[Outsoft]

Outsoft will be your new best friend if he can use that many microdrives

We are just best friends

Tomas is the author of mDoubler and the man that helps me on the Sinclair BBS ^_^

[vanpeebles]

Hehehe

[Derek_Stewart]

Hi,

I have designed another PCB, that swaps signals on the left edge, so is useful to connect with ribbon cable.
Each board has insignia 'mPort', the one that swaps signals has an 'X', so I can connect in theory up to 6 external drives. Doing that, only one 'mPort-X', and 5 'mPort's are needed.

mdport-brd.png
mdv-chain.JPG
Tomas

Hi Tomas,

Can any other device be connected to the expansion board.

[tcat]

Hi Derek,

mPort allows connecting only QL MD units in a chain, up to 6 in total.

I am not much into electronics, and all my ventures in this respect are that of a hobbyist, but I can imagine other devices complying with 'MD-BUS' protocol (which I believe is similar to serial line) can be connected.

Tomas

[Cristian]

Hi,

I just wish to report that mPort works!

You're great!