Hey, great news. I'm glad you found the problem.
I had been scratching my head, because I could not see anything wrong...
Mark
QL's external MDV port
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1024MAK
- Super Gold Card
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- Location: Looking forward to summer in Somerset, UK...
Re: QL's external MDV port
Standby alert “There are four lights!”
Step up to red alert. Sir, are you absolutely sure? It does mean changing the bulb
Looking forward to summer in Somerset later in the year
QL, Falcon, Atari 520STFM, Atari 1040STE, more PC's than I care to count and an assortment of 8 bit micros (Sinclair and Acorn)(nearly forgot the Psion's)
Re: QL's external MDV port
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://qlforum.co.uk/viewtopic.php?f=2& ... 204#p14204
Tomas
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://qlforum.co.uk/viewtopic.php?f=2& ... 204#p14204
Tomas
Re: QL's external MDV port
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.
Tomas
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
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vanpeebles
- Commissario Pebbli
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Re: QL's external MDV port
We are just best friendsvanpeebles wrote:Outsoft will be your new best friend if he can use that many microdrives
Tomas is the author of mDoubler and the man that helps me on the Sinclair BBS ^_^
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vanpeebles
- Commissario Pebbli
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- Joined: Sat Nov 20, 2010 7:13 pm
- Location: North East UK
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Derek_Stewart
- Font of All Knowledge
- Posts: 3976
- Joined: Mon Dec 20, 2010 11:40 am
- Location: Sunny Runcorn, Cheshire, UK
Re: QL's external MDV port
Hi Tomas,tcat wrote: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
Can any other device be connected to the expansion board.
Regards,
Derek
Derek
Re: QL's external MDV port
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
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
