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joethezombie

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Everything posted by joethezombie

  1. joethezombie

    Wifi Extension Development Thread

    Great news! The Vonets has been working good for me, but having actual working HTTPS would be an INCREDIBLE feat!
  2. joethezombie

    LC 575 board (in Color Classic) - funky vertical lines

    As always, @Bolle, most excellent work. Very well done! @techknight, no. not allowed. But seriously, I for one can definitely understand the time sink. Get wrapped up so far in work and repairs, then there's no time to to actually play. Although, there is a certain degree of satisfaction when something clicks and it finally works. Thanks so much for the years of contributions on here, and your youtube videos. And I hope your retirement is sporadic at best.
  3. joethezombie

    SE/30 Unstable behaviour after 128MB RAM install

    If you download the ROMinator II manual, it details the issue on the last couple of pages.
  4. joethezombie

    MacToTheFuture SE/30 10/100 Ethernet card

    Ah ha! Serious awesome sauce watching your progress!
  5. joethezombie

    MacToTheFuture SE/30 10/100 Ethernet card

    The complete schematics and equations are in the ProtoCache thread. It's fully open sourced. Of course, questions for that topic should stay in its respective thread.
  6. joethezombie

    MacToTheFuture SE/30 10/100 Ethernet card

    I second the call for PDS pass-through. SE/30 freaks tend to have multiple PDS cards shoe-horned inside using right angle hacks or permanent wrong angle Asante modification. Would hate for the fun to stop at the first upgrade
  7. joethezombie

    Self-Contained POTS System?

    Even in Idaho, most LECs don't repair copper anymore. Worst case, your POTS line is now a cellular adapter out on the pole, which doesn't even support FAX, let alone dialup Internet.
  8. joethezombie

    Modern PSU for the SE/30

    Well, I did say "may be" and "doesn't appear to" for a reason... I don't have one, so I'm not going to be definitive. If we look at the product http://www.mini-box.com/picoPSU-160-XT And read the manual http://resources.mini-box.com/online/PWR-PICOPSU-160-XT/PWR-PICOPSU-160-XT-manual.pdf There is nothing in there to indicate more than one 12V rail. Looking at the DC-DC board, I only see two regulators, probably one for 5V and one for 3.3V. I would guess that the 12V originates from the brick. Will this cause any issues with the display? I don't know. Like I said, I don't know of anyone that has ran both the SWEEP and DISK circuits from a singular 12V source, unless the power supplies you used are advertised as single rail? Perhaps so, but is there any filter capacitors,inductors, or diodes for noise control on those PSUs? I don't know, but if they advertise as having multiple rails, one would think there is some kind of additional circuitry in there to support the claim. That also makes me curious if continuity is present on the Apple power supplies. I'll have to check next time I have a compact apart. If everything does run fine on a single 12V rail, it kind of makes me wonder what Apple was thinking in having two.
  9. joethezombie

    Modern PSU for the SE/30

    No doubt it would work, @ants, but because it doesn't appear to have the isolated 12V lines discussed previously, there may be noise introduced to the video during disk access. I say "may be", because I don't of anyone that has tried running the DISK and SWEEP circuits from a singular 12V source. Perhaps it's a good solution for machines which don't include a built-in display.
  10. joethezombie

    Capacitor list for SE/30 analog board

    Thanks for your detailed explanation. When researching this, I read that these ratings are not lifespans, rather abuse tests. The manufacturer runs the part (for example) at 85C for 2000h continuous hours, then allows a cool down, and a final test on the capacitor to see if it still performs to the specifications. I'm also curious if the computed longevity compares continuous use vs. idle time. But it is good to know there is a source (Mouser) for 105C parts. Lead spacing for C15 is 8mm.
  11. joethezombie

    Capacitor list for SE/30 analog board

    Yes, the axials, DigiKey did not have exact replacements. I chose the best they had at the time. Interesting to see they’ve added the Vishay you found. But regardless, if your analog board is reaching 85C where the axials are located, you’ve got bigger problems than capacitors. I’m unfamiliar with Mouser’s product catalog. I wonder if they have a better C15 replacement. The film capacitor I used has the wrong lead spacing, so the legs need creative bending.
  12. joethezombie

    SE/30 Power Supply: Recap or ATX?

    Not an Excel file, but a DigiKey list for the Analog Board, I created: https://68kmla.org/forums/index.php?/topic/29440-capacitor-list-for-se30-analog-board/&do=findComment&comment=318183 Also a DigiKey list for the Sony version of the power supply: https://68kmla.org/forums/index.php?/gallery/image/1215-se30-sony-power-supply-recapped/
  13. joethezombie

    Fitting a SCSI2SD in a 68k Mac

    Ah, good to hear. Do keep us posted with the PCI SCSI implementation performance.
  14. joethezombie

    Fitting a SCSI2SD in a 68k Mac

    It will be interesting to see how the v6 performs in the 7500. On a IIfx, I was receiving 1598 KB/sec on the v6, and 1200 KB/sec with the v5. But, pop the v6 onto a Jackhammer, and I was getting 6054 KB/sec. But VERY nice to have 0.0ms average seek time and 2.3ms average access time. Note however, that there is a known issue with v6 and write performance. I've conversed a bit with Micheal, and he believes at writes after 65536 bytes, the SCSI2SD is falling back to single-sector transfers. This will limit the sustained write speed, but only on files larger than 65536 bytes. He's currently working the issue and hopes for a fix soon.
  15. joethezombie

    Power Cords for early Macs (128K, 512K, 512Ke, Plus)

    I’m fairly certain my ImageWriter II came with an angled Apple AC cord, so those might be in the mix as well.
  16. joethezombie

    Modern PSU for the SE/30

    Excellent work @superjer2000! That power supply looks 1000x easier to shoehorn into the SE case than the one I used. Very well done.
  17. joethezombie

    Daystar Turbo 601 IIsi adapter...SE/30?

    Close... On the PDS30 side, /BG is floating. /BR and /BGACK are triggered with /CPUDIS. On the 601 side, /BR is pulled high and /BG - /BGACK are floating. Still haven't gotten around to trying your adapter in the IIsi with the 601, but soon!
  18. joethezombie

    Dead SE/30 question

    Excellent detective work Bolle! You're a miracle worker!
  19. joethezombie

    Modern PSU for the SE/30

    I bought one just like this from ebay. I haven't yet used it enough to really give an opinion. I've crimped some small terminals for an ADB project using digikey WM14852 and WM4561CT-ND, and that's about it, but they did a very neat, professional looking, and (more importantly) well-working job. Right, but most of the molex terminals are "universal" per se, as the ones from the FSP220 fit and locked into the old SE-SE/30 connector without issue. The same (a guess, I didn't buy one) connector can be found at digikey with WM3704-ND, which also lists compatible terminals. "Dissecting" is definitely much to strong a word. I should also clarify it wasn't Sony, rather Astec, as referenced in the photos. While musing around looking for a modern replacement, I was curious why I couldn't just use a single 12V supply, so I started sketching out the circuit from the outputs working back to spot the differences. Keep in mind, this was on a non-working unit, so I have no voltage measurements. Anyway, this turned out to be a partial effort-- after finding the FSP220 with two 12V rails, I just went with that and never went back to complete/verify. Apologies my quickly typed sentence had such a strong inference. Thanks for posting, I remember having a difficult time trying to find the schematics when I searched. I see the complete schematics have now been linked recently.
  20. joethezombie

    Couldn't help myself...

    I don't collect IBM machines, but that PS/2 55 SX would be the one to get if I did. I have very fond memories of that specific computer while hacking away on... TURBO PASCAL! Yeah! I can even smell the CS lab by just looking at images of the PS/2, plus my mouth still gets dry... no beverage allowed in the lab, so I was always thirsty!
  21. I was able to scavenge one of these cards (and a PLI SCSI card as well) from that Californian e-recycler! Interestingly, the ass end of my card is populated! What purpose could it be? It seems there is/was some software needed for this thing. "The Buzzards Nest IV BBS" seems to have a file listing for: SCSIPowCd123: 48k:SCSI PowerCard 1.23 - new update for System 7.0 And some web searching brings up an article from MacWEEK Vol 07 Num 25: So maybe mine or @beachycove's is a DiskRunner? If the original SCSI PowerCard, that seems to indicate we need an INIT to get it fully working? Anyone with a lead on old DayStar drivers archive? I'm going to test for functionality on both cards this weekend. Then have an SCSI shoot-out with the SCSI cards I've collected over the years.
  22. joethezombie

    DAYSTAR Universal PowerCache installation manual

    HA ha ha!
  23. joethezombie

    Macintosh IICi SuperMac video Card

    Try holding down the option key when you turn on the computer, and see if the card will cycle through refresh rates and resolutions and see if it will sync up. If you get a usable picture, release the key.
  24. joethezombie

    Modern PSU for the SE/30

    1. Yes, I removed the fan only due to noise. There is no other reason to remove it. If you are fine with noise, go ahead a leave it in. Like JDW, I absolutely hate the sound of a fan. I replaced the fans in all my compacts with a silent model as well. 2. If you look at the 2nd picture of the empty power supply case, you will see that it is a DPST switch, so both the line and load is switched. 3. There is no display issues, even while floppy drive access. The FSP220 is advertised as having two isolated 12V rails (one is marked yellow with a black stripe, the other is solid yellow). Also: So if you are concerned with "Apple approved isolation", simply add a diode and a filter capacitor to the yellow/black wire. But I find it is not needed. I can only imagine power supplies have improved just a little over the past 30 years. It would be an interesting experiment to throw the scope on each and see what the differences are.
  25. joethezombie

    Modern PSU for the SE/30

    Answer 1: The reason I used heat-shrink and hot glue, is because the huge mass of wires make it very difficult to cut off right at the PCB, especially if the removal target is in the middle of the bundle. It's not as easy as you would think to spread wires and clip at the base with so many in such a small area. Plus, there is the vertical PCB right next to the wire bundle that makes it very difficult to fit in the nippers. I didn't want any chance for different voltage wires to be able to short together. Desoldering can work, but the underside of the PCB is a mess, and if you are not careful, you could definitely cause problems. If you are able to clip off right at the PCB, do it! Just don't leave a stub that the insulation could slip off and cause the bare wire to short against the PCB. There are many voltages in a very small space. Answer 2: I used a "stepper drill bit" to make the hole larger and larger until the motherboard standoffs self-tapped into the holes. I did this because I didn't know the size of the standoffs I had on hand. If you purchased some, they would probably have a specification for proper hole/tap size. One of the holes I made too big by mistake, but you can use a dab of solder or epoxy to permanently attach the standoff to the casing. Answer 3: After snipping the fan, I was a bit worried about over heating. I ran Apple Personal Diagnostics in loop mode all day long. The casing to the power supply becomes warm, but not as warm as the flyback shielding, and certainly not anywhere near hot. Coincidentally enough, I just ordered a laser thermometer because I wanted to test the temperature of a Radius Rocket on which I replaced the CPU, so if you give me a week or so, I can take comparison tests with my other SE/30 which houses a recapped Sony PSU.
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