Printed Amstrad Addict magazine announced, check it out here!
Started by tjohnson, 23:29, 21 February 18
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Quote from: rpalmer on 21:48, 16 June 18ikari,The link in your reply "https://www.msxinfo.net/2014/03/12/making-a-alps-df354h127f-msx-compatible/" says page not found.rpalmer
Quote from: ikari on 08:20, 20 June 18Now this is interesting! Would you care to explain the connections you've made? I see it's a bit different than in the instructions.I highlighted some of the questions and differences with my version in the picture attached. Not sure if I will modify it again, as it generally works well as it is now, but I am eager to learn what's different and what's happening in yours. I wasn't able to find any good description of the signals in this Alps drive, so all I have were the instructions from the two links.Edit: ok, after typing this post 4 times, my attachment "fails security checks". Posting it to imgur then:
Quote from: tjohnson on 22:38, 19 June 18I got another drive and modified the ready signal, this version appears to work better. I added a switch for the side selection which are the additional wires at the bottom.
Quote from: tjohnson on 08:44, 20 June 18The short cable at the top makes the drive dd permanently, no need for cellotape over HD disks. I changed the ready signal after i found it was permanently ready with the mod. It is now only ready when there is a disk in the drive.
Quote from: ikari on 14:31, 20 June 18I see. In my version I accidently have it READY when there's a disk in the drive, because the 2nd-from-corner pin on the chip that the MSX instructions said to connect to pin34 seems to behave like drive density detector. So when something presses on my HD-hole sensor (meaning: no hole), the signal goes low. I discovered, with a LED, that a disk with a hole means the signal will stay high.So it probably works for me because I *didn't* permanently set it to DD Is there anything on the Alps drive that would be exactly like the original "Ready" signal, checking the motor speed, etc.?
Quote from: pelrun on 04:18, 22 February 18Scratch that; RD isn't the ready signal at all (I expect it worked on an Amiga because they also route the DC signal to another pin.)Try this one instead (pin 34 to pin 32 on the IC): https://www.msxinfo.net/2014/03/12/making-a-alps-df354h127f-msx-compatible/
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