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zuiko21

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About zuiko21

  • Birthday 04/22/1970

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    Almeria, Spain

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  1. Wow, this thread is getting waaaay cool! I know, I still owe several replies (and research) here... but for the time being I see very interesting the idea of a grayscale SE/30. With the video card issue already solved, this is what I think about the remaining tasks: The grayscale board for the CRT shouldn't be much of a problem for anyone able to make a (simple) PCB. We already got the schematics and copmponents are pretty much standard (read affordable), even the CRT socket, I'd say... Unfortunately, no video card intended for an external monitor will supply adequate sync signals fo
  2. I'll be far from my Macs for a few days (and pretty busy!) thus I can't confirm this for sure, but I believe that even a stock SE/30 should be able to boot from CD-ROM provided that: The CD is bootable The System version is compatible with the SE/30 (up to 7.5.5) That system's configuration is suitable for CD-booting One thing is for sure: such an old Mac won't recognize the 'C' key pressed during startup for CD boot, instead should use the old Cmd-opt-shift-backspace key combo, preferably while hitting (with the tip of the nose ) the number for the CD's SCSI-ID, that way should forc
  3. Hi and thanks (again) for the warm welcome... Things aren't that complicated, just more/new tasks at work with less pay but still can afford some hobbies anyway. Back to our thread, I've been experimenting a bit with the IIsi and the Radius Pivot PDS card... first of all, after this period of inactivity, the PSU is misbehaving a bit -- things like firing up on just plugging and then not powering off (yes, the power button is not at the stuck "server" position) so it's asking for a recap at some point... however, after some warm up period it seems to do just fine for the testing. To su
  4. Phew! Hi again! Sorry for being absent all this time... life's got rather complicated and, among other things, I've been giving birth to my very-own-designed 6502 computer -- now that's retro! Fortunately, things are starting to settle down now, so I'll be back into the delicious world of 68k Macs real soon... currently, the IIsi is sort-of buried below a lot if stuff, I'll try to clean up that as soon as possible. I've seen the schematic of the connection a few posts above... while I was already aware of extended sense codes, it's worth noting the diode placed between the sense lines
  5. I overclocked my Quadra 700 with a socketed 64 MHz oscillator: The hard part was desoldering the ground pin... but otherwise it's a fairly easy procedure. I tried slower oscillators also, for the fun of it: down to 40 MHz is OK; 32 MHz starts having video issues... 24.576 MHz or lower, no boot at all ...but I no longer have the 68040 on it; it currently runs on a PPC601 accelerator card on the PDS, which gets the 64 MHz speed as a bonus
  6. AMAZING! We already knew it was possible, but seeing it actually running is just great If I understand it correctly, if no key is pressed upon power-up, the machine will try to boot from an ordinary disk, right? Could that be modified in order to make the Copy ROM to RAMdisk boot option the default, leaving some key for the disk boot mode?
  7. zuiko21

    CC and C

    Now that you mentioned the roadmap for CC upgrades... the 68LC040-based LC575 board is an easy upgrade, but why the change to a full 68040 is marked on red? Is it really "dangerous"? I expect it to increase heat dissipation, but fitting a small heatsink should suffice, am I wrong?
  8. OK, let's go! (I'm writing this on the SE/30, after checking what you said) So does mine... These are exactly the values I read at $50F14806 if I change the volume setting via the usual control panel... Well, here we are a difeference: mine reads $02. FWIW, at $50F14801 is $01. Done I haven't tried the custom ROM SIMM on the other compatible machines I have (IIx, IIsi, Quadra 700) although I don't think they would show any picture... but the sound should play OK, right? Should I try them too? Any other interesting test to do? All the best,
  9. Phew... After a long time with tons of work, I'm back again Glead to hear the discussion going on. I've had little time to keep twinkering on it, but here's an update/remainder of the state of my research: •The card supplies a 640x870 (portrait) signal, no matter the sense code applied (from the limited selection I tried, that is) with the usual Radius logo on startup. •The card doesn't show up on the Monitors control panel, thus the OS isn't supporting it Most likely I'm not supplying it the proper sense code, as you suggested. Anyway, the card keeps the Radius logo output, as if a
  10. [Wow! It's been a long time since my last post... I've been crazy at work these weeks I hope to catch up soon!] @onlyonemac: If memory serves, I tried every possible value for the register, including each combination of D0, D1 and D3 -- the volume did turn down making the sound quieter... but equally distorted I'm afraid the distortion comes from some other place... BTW, D2 seemed to have no effect, but its value was changed anyway. @Bunsen: Certainly. The big problem about an unexpected OS for these machines (or any old world Mac) is the firmware, which is expecting to boot from a
  11. 2 & 8 MB SIMMs do not work on the SE/30 -- just 256K, 1, 4 & 16 M The IIsi (and I presume the IIci too) seems to take almost anything 30 pin, parity or not, composite or not, including 2 and 8 MB sizes. But the clearance issues aren't unique to the SE/30: the Quadra 700, for instance, has a tighter spacing between sockets, thus some SIMMs with chips on both sides won't fit.
  12. Oh dear... the MacMini is running 10.5.8 -- the system confuses the eight next to the ending ')' for a smiley
  13. Just downloaded, works great on: iMac 21.5" Core-i5, 8 GiB (OS X.7.5) MacMini Core2Duo, 2 GiB (OS X.5. If needed, I can setup the last machine with the originally supplied version of Tiger, for further testing. Thanks again! PS: Any remarkable improvements in mind for the next batch of SIMMs? If nothing big is gonna change, I could take a couple of the current 8 MiB batch
  14. Strange... Please double-check all connections. You did remove the jumper previously used for firing up the PSU, right? Click here for the IIci's PSU pinout -- it's the same as the IIvx, Q800 etc. Also, make sure that the metallic enclosure of the transistor isn't touching any other contact -- some models have the enclosure connected to the collector. If it's in contact with Ground, will likely show the symptom you describe ("always on"). Ditto if the power button on the IIci is at the "locked" position... If all of the above fails, you may try to disconnect the end of the 10K resistor
  15. If I understand your idea correctly, that Universal PSU-Adapter PCB shouldn't be difficult at all... just take my previous schematic (for the IIsi) and connect the lines in parallel for each Mac-side connector. Some lines from the ATX PSU (e.g. the +3.3V rail, unused and thus not shown in the schematic) would go for certain Mac models only (like the 7600 etc). You don't even need to put multiple transistors for soft power... just connect the /PFW lines (Mac side) together to the resistor, like the only one in my schematic. For those Macs without soft-power (LC, compacts...) a simple switch
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