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kgallen

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Everything posted by kgallen

  1. They look a little different at the hardware level. PC-Link looks to be real I2C (IIC), with Keyboard overlayed on the same PS/2 connector. Control-A1(II) looks to be a proprietary hardware interface - although admittedly it has similarities to I2C, viz an open collector output with passive pull-up. It may be that the bytes that are sent over these three interfaces are essentially the same. On the 770 the PC-Link, Keyboard and Control-A1(II) have independent connections to the uC. Looking at the uC pinout/datasheet, the PC-Link I2C is served by a dedicated I2C engine in the uC. The Keyboard overlay (KBCLK/KBDATA) uses uC pins that are simple GPIO only and the A1_IN/A1_OUT also look to use GPIO - so these interfaces will be "bit-bashed" in firmware rather than using hardware UART engines.
  2. I'm not going to argue with the boss (he might ban me!) :-D Looks like I need to hit the schematics for the 770 as that seems the machine that has all of these on! The devil is probably in the firmware though. Maybe the 770 was a "more interesting" buy after all!
  3. Yes it seemed to have an annoyingly short life. MD-wise it seems to appear on the 920 (but not the 520) which would be 1998, lasting though the x30 range and I think the 770 (2001) was the last. Not sure about the 640/940 without downloading the manuals. So maybe 8 or so MD decks? CD decks seemed to just drop it, and MD decks migrated to USB and PC-Link connectivity, rather than deck-deck connectivity.
  4. They don't. They stare blankly at me. And then 150 audience also turn and do the same. Then the kids (in the audience) start screaming because the Fairy isn't singing her pretty song which keeps them at bay. British Panto - a daily roller-coaster of fear and near-panic for the cast and production crew. A delight (hopefully) for the audience! The audience love it when things go wrong. They like to see the fear and panic in your eyes.
  5. Exactly. So far I've been lucky. MD reliability is good (which is one of the reasons I switched back to MD). But I'd like a get-out-of-jail card if I can. With my "new" MDS-E12 and CDP-D12 rack I have in principle a backup machine (2 E12's "on-line" [1xSFX, 1xMusic], plus 1 E12 "backup"). Thus I need a backup disc of both the music and SFX to be able to use should a machine or a disc go down. Probably I'm paranoid! I can do CD-MD dubs with the Tascam MD-CD1 - the material is prepared on a PC, written to CD-R then dubbed to MD. The trouble is the CD-R to MD dub on the MD-CD1 is not fully reliable. I've had dropouts and it's quite common for the titles to get corrupted in the transfer (MD-CD1 firmware is full of titling bugs). So just making another CD-MD dub for a backup is not reliable without listening through the whole disc(s) and spending time correcting the titles on the backup discs (the titles are important as they hold the cue numbers - another reason for using MD. CD-Text is so hit and miss). So it's something I don't always do when I should... As the Sony firmware seems to be much more reliable, an MD-MD dub with titles was my hope... I do tentatively keep looking at the Sony MDX CD-MD combos. But they hold their price on the bay and do I want yet another machine (don't answer that!). Watch me eat my words...
  6. Well ok, so it took me 3 years, but hey ho. Using an MDS-E12, recording a track (or disc) with Copy=Permit, I was able to make 3 generations of digital (TOSLINK) copy of the track using an MDS-JE770 into an MDS-JE530. The point to note here is that I thought the 530 (as a consumer deck) might force the COPY bit on the 1st gen digital copy. It didn't, it still propagates the "copy permit" status which allows further digital copies to be made, even consumer-to-consumer deck as above. Note the 770 and 530 were also connected with Control-A1(II). Unfortunately I couldn't get the titles to copy, even putting the 530 into "CD Sync" with the remote. So I suspect the 770 is not spitting out the MD titles on the Control-A1(II) port. Shame, that's what I really wanted!
  7. I’ll say nothing more than ‘great news’! These things are sent to try us.
  8. Thanks for the Groups info - very interesting. Something I've yet to play with (my list of "to play with" is quite long!). Fantastic! That's what I love here - contributors who will take an extrapolated thought and try it out! Shame it didn't work, but great idea! :-D
  9. Also as it was the issue a couple of posts ago...! Make sure the remote and keyboard don't have buttons pressed!
  10. The titles are stored in the TOC, the audio in the main part of the disc. Regards Groups - this is only on a few later decks and portables I think. It's on my 770. However I don't know whether this is an "on deck" feature or whether it's some information that is stored in the TOC on the disc - I suspect it's the latter, but I don't know anything about how Groups are handled and what the effect is on a non-Groups machine (none I would hope!).
  11. Weird. If you haven't, might be worth a mains power cycle - as in unplug for an hour or so and then replug. Sounds like the uC getting it's knicker's in a twist. On your first point about track names - audio and track data are allocated separate space on the disc, so full audio shouldn't impact adding titles. There is a limit on title space, but it's relatively large. I've only ever filled track space up once and this was on an audio test disc (sine waves and the like) with about 100 tracks and some pretty long titles on many of them.
  12. It wasn't my intention to spam and detract from this thread but I've clearly messed it up. Sorry to @Trumie35. Only this, no excitement required!
  13. Anyone got any tricksy idea how to read personal messages on the phone version of the site? When I’ve a new message I can get straight there. If I want to revisit messages I can’t find a button anywhere. I must be blind. I can’t even see a mechanism via my profile page.
  14. A.CUE+MENU is a version report. VARISPEED+MENU is a relay check and FF and VARI buttons seem to toggle the p-out and e-out (from the schematics these seem to be "pause out" and "end out").
  15. More fun with the CDP-D12 hunting for test modes. PLAY+DISPLAY gets you into a parallel port test mode. The input pin conditions are shown on the display, the output pin states can be controlled by rotating the AMS encoder:
  16. Yes, I've got a CDP-XE530 (yup only a few months ago...) that I found to "go" with the MDS-JE530 :-) Which has (a) CD-Text, (b) Optical and Coax outputs (c) Control-A1(II). With that I know I can do a first-generation digital copy from CD to MD (SP) XE530-JE530. It should do the same with the 770. Getting the 770 was more about can I do MD-MD clones between the JE530 and JE770. Initial trials failed due to either SCMS or Title Protect. What I need to do is get a CD recorded onto MD using the E12 (with SCMS disabled) with titles and then try and dub that 530-770.
  17. Found another for the CDP-D12. VARISPEED+DISPLAY (power on) is fluo display test. DISPLAY toggle all pixels on and off. Interestingly this display looks very similar to the one used in the E12, although it's not exactly the same. For example, it includes TOC EDIT, LP2/LP4, REC and also interestingly a bargraph VU meter - I've never seen it operate on this CD machine, yet it's supported on the display. This certainly calls for more investigations...! A similar key sequence (key position or key name) doesn't make the E12 go into a display test mode, however my interest is tweaked... Check it out: Also: A.CUE+DISPLAY (power on) is some kind of RS232 receiver check. This is too much fun! Again, can't get the E12 to do the same, but I just bet it's in there somewhere :-)
  18. Regards the CDP-D12, if anyone has any info on the service mode I'd be interested to hear. I have the Service Manual (Issue 1). This doesn't describe any service mode (or the key sequence to enter one). It does describe a Factory Reset, which is STOP+MENU then power on the deck. Further by playing with buttons, I've found that STOP+DISPLAY (then power on) gets you into a key-test mode for testing all front panel buttons and the AMS encoder. However I've not found a way into any more comprehensive test mode like we find on the MD machines. Regards the CDP-D12 I would like to find if there are any odo counters to see how many hours of use the laser has. Nothing is documented in the service manual, but as this machine is of the same era as the E12 I find it hard to believe Sony didn't add any service or check modes - even though I realise the CD machine will have fewer service parameters than an MD machine.
  19. Well as you know I like my I/O on a machine 😄 In terms of interconnecting the two it's a little disappointing. The CDP-D12 from what I can find, is about Sony's last "pro" CD player and as you can see is pretty much of the style of the MDS-E12 MD both front and rear. The E12 is made in Japan, the D12 in Korea. The CDP-D12 is from around 2003, the MDS-E12 first appeared around 2001. Even so the CD machine is not CD-Text, which is a little surprising and a little disappointing [*]. The best I can do so far is hook the pair up with coax SPDIF. The CD player at least has both optical TOSLINK and coax outputs, because the E12 only has coax digital I/O (the MDS-E10 has both optical and coax but lacks all of the other control and non-standard I/O found on the E12). They both have the Ctrl-S input port, which as far as I can see, is only of use to cable to the remote control instead of using IR. I'm quite bemused why Sony stopped adding the Control-A1(II) ports to machines, the Ctrl-S in comparison seems pretty limited (I realise other MD decks migrated to USB). Ctrl-S is input only so you can't connect machines together with it. The CD player has balanced (XLR) outputs to match the E12, and it's those I'll be using to hook up to my X32 Compact digital mixer when these machines are employed "in anger". The CDP again like the E12 has the remote control ports on DB9 - parallel and RS232. I intend to use the parallel controls - on the E12 at least. I've been playing around with this today (hence the mess on the dining room table!). My intention is to design a DMX-to-E12-remote interface to go between my Zero88 FLX lighting console and my other pair of racked E12s. In this way I'll be able to use lighting cues to trigger concurrent sound effect or music cues playing from the E12s. (This will probably be based on an Arduino with an added DMX interface, control port to two E12s, a small LCD and some buttons to configure settings. See here). If I wanted to make a dubbing pair I could probably make up a DB9 lead to connect the two parallel ports, so when the CD starts to play the MD starts to record. However as the CD has no CD-Text support and the MD no Control-A1 port, there is no way to copy titles. What this means is, even with all of the machines I have, I still don't have fully satisfactory means of dubbing CD to MD and even less for dubbing MD to MD. For CD to MD I have my Tascam MD-CD1 machine - which is mostly ok but has an annoying quirk of putting a short gap between adjacent tracks, although at least it does copy titles. Annoyingly even though they are "pro" machines there is no way to defeat SCMS. Which leads me to my outstanding MD-MD cloning requirement which is still not satisfied. I have the MDS-JE530 and recently now the MDS-JE770, which I can hook up with optical TOSLINK and Control-A1(II), but with that setup I'm stumped with either SCMS for the audio or "Titles Protected" even on MD's I've made myself. This means I have to bring either the E12 or E10 machines into the mix, which can control SCMS, but neither of those have Control-A1(II) ports for titles copy. It's all very frustrating... [*] And even more bizarre and annoying since the CD chip used in the machine appears to have a CD-Text decoder built into it:
  20. I've a new recruit. OK not an MD this time (sorry), but "one of the family" to partner my third :-) MDS-E12. It's a Sony CDP-D12 CD player. I've been looking for a 1U rack-mount CD player for a while. When I need MD and CD I've been lugging around a 4U flight case with a Tascam MD-350 and Tascam CD-450 in it. Both nice decks, but a fairly big outfit. So now I've a 2U rack with an MDS-E12 and a CDP-D12 in it :-) (I'll do some better photos at another time - it's raining heavily so I had to take these indoors with the problem of poor interior lighting and shadows.) More commentary later (the wife has just shouted up for me to clear the table of my soldering gear for dinner!)
  21. On the main PCB, there is either a solder bridge or a "handbag link" something like this: It is usually in the reset line to the uC. If you look on my 530 picture here, you can see it just above the battery (thin purple, bottom centre), CN451. In the case of the 530, it disconnects the battery: On the Pro E12 they didn't go to the "expense" of a jumper, it's a solder bridge across two pads: Whenever I've tried this, it's made no difference (sorry).
  22. There’s not that much info on minidisc.org so if you have other info or other photos (close-ups, rear panel detail) then that would be good. Also if you happen to take the lid off (in a year!) then we’ve recently been adding to our library of data on This Thread.
  23. I think what freaks me is the slot has a wide margin to it’s left but then it’s hard up against the display to its right, like they squeezed it in. Are there other components that use this same overall layout so they’ve maintained what would be a vertical alignment? Can’t quite see how a CD player would work in that schema though! I’ve got a new addition to my ‘family’, I’ll post later. Keep it coming! Kevin
  24. We're all listening and we're all interested. Keep talking! Big display. Unusual front panel layout. Interesting!
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