[ql-users] Adding ZX Microdrives to a QL

[RWAPSoftware]

Here's a little oddity...

I have got 3 ZX microdrives which supposedly work with the Spectrum (and Interface 1).  However, I have tested them by adding them to the QL's microdrive expansion port and using FORMAT ram1_mdv3 (thanks Miracle) with the following results:

1) All 3 plugged in together, give format failed on mdv3 to mdv5
2) I tried the middle ZX Microdrive on its own - that gave format failed..
3) I tried each of the other two ZX Microdrive units on their own - both give 255/255 sectors (ie. all sectors on the cartridge are copied across).
4) I tried these 2 working ZX Microdrive units together - both now allow the format command to copy the microdrive cartridge, but they only give 248/255 sectors and 221/255 sectors

Hmm - is there a loss of signal when using more than one add-on ZX Microdrive ?? I seem to recall that these units were not up to the same standard as the built -in QL microdrives - am I correct??

--
Rich Mellor
RWAP Services
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