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Franklinstein

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Everything posted by Franklinstein

  1. Franklinstein

    Power Mac 7200 Broken Plastic Tabs

    In short, welcome to mid-90s Apple. If you look up "brittle" in the dictionary there's a picture of a PowerBook or beige Power Mac, either a 7200-style or 5200-style case, depending on which dictionary you're looking at. That big louvered thing is important because it helps direct airflow over the PCI and processor cards, but it's not a big deal if its mounts are busted; just lay it back in place and it should stay. The drive caddies can be had on eBay or from some people here. The black case support and the little flip-out stand aren't essential. Power buttons and case latches are kind of hard to find in one piece.
  2. Franklinstein

    Color Classic/Mystic weird video issue

    It may be trying to run a video mode the CC doesn't support. Try booting the board in question with a Disk Tools disk after zapping PRAM.
  3. Franklinstein

    Quantum Prodrive possible repair

    I posted in this thread about rubber replacement a fairly detailed description of what these bumpers do and where they are on both the ELS and LPS drives. I figure silicone of some sort would be a perfect replacement material for them. You can probably use silicone beads if you can find them; the bumpers don't have to be perfectly cylindrical, just with dimensions in the ballpark of the originals. I'd like to find something made of silicone shaped roughly like a glue stick that I could cut to size. The "parking brake" is Quantum's AIRLOCK armature. Its function is to prevent the head armature from moving out of the landing zone in the event the drive experiences shock. It utilizes the air current generated by the spinning platters to move the arm out of the way once the drive spins up, and it's spring-loaded to automatically deploy when the drive spins down. You'll notice that in older drives such as the LPS, the lower capacity versions have an odd black plastic platter on top. This is because the air currents required aren't generated without two platters. However, this problem was solved in the newer ELS drives: the single-platter drives have a wicked-looking attachment at the top of the spindle that generates enough air to move the AIRLOCK armature. The head armature really don't have any torque so the slightest stickiness to any of the bumpers will keep it from moving. Your drives are probably sticking on the bumper underneath the platters (if you use an ELS drive), though if the AIRLOCK armature doesn't move once the platters are at full speed, there could be something unusual causing it to stick.
  4. I don't know what they were thinking with the 3.5" CDROM. I've only ever seen maybe ten retail CDs in that format and I doubt any developers were terribly excited to accommodate another weird Apple decision, especially one so unnecessary. If they had moved a few things around internally (such as the IR module and using flip-down feet instead of the spring-loaded ones) they probably could've shoehorned a full-size CD drive in the 5300's case with only an extra cm or so of depth. But of course arbitrary and unreasonable management ruins everything, as usual. As for the 3.5" MO, like every other Apple drive it would have been built by someone else and who would have then slapped on a sticker with an Apple logo. 98% chance it would have been a Fujitsu unit (like the ones VST and Logitec ultimately used), though at the time IBM also made MOs, and Olympus was a noted manufacturer of high-speed MOs, though both were mostly focused on desktop devices. I'm sure that if MOs were more popular in the States they would have brought it to market, but between the expense and poor availability of the disks outside of Japan, I guess they figured it wasn't worth the trouble. Or, perhaps they couldn't get a deal with Fujitsu to make the drives to Apple specifications. What would also be interesting would be a collection of 3rd party expansion bay models that aren't a Zip drive. Apparently there were some internal power supplies built, but what else was actually available? I have a VST MO 230 (sadly dead) but that's the only other thing I've seen for these machines.
  5. Franklinstein

    Pre-Production LC

    I have one too. It came with a DayStar Value 040 installed.
  6. Franklinstein

    Cheap IDE on scsi bus solution?

    Oh yeah? I figure a good SD controller with one of those high-speed SD cards would surely outperform an average HD, especially if you're not spending a ton of money on a fast HD. Most of these machines have problems with drives and/or partitions exceeding 128GB anyway; I'd stick with a 32GB flash card and call it good. These drives only have so much controller memory available and are not reprogrammable without specific commands being invoked; none of them could autonomously reprogram their local memory. On a lot of drives, especially in the late 80s/early '90s, the program data was stored on an EPROM and couldn't be changed anyway. Anything modern with SMART typically keeps everything related to defect management (among other parameters) in a special reserved area on the drive's media. I would imagine older drives do the same, except perhaps on ancient MFM-era drives that have the defect list printed on the top of the drive. Even then the disk driver/file system often keeps a record of bad sectors (at least SilverLining would map and reallocate bad sectors at format time or on-demand as errors arose). Typically with trial and error it's possible to switch controller boards among any drive within the same family (so, a Quantum Fireball TM with another TM, or a CX with another CX), whether it's SCSI or ATA, higher or lower capacity. It doesn't always work, especially if there were large revisions somewhere in the product's lifetime, but it does more often than not. Apparently the Fireball TM had a very poor reliability record in ATA guise but was fine with the SCSI controller (though honestly it was a lackluster drive regardless of interface); I have a couple of the 3.2GB variant on ATA that aren't recognized by any host computer that I'm keeping in case I get a bad SCSI version to swap boards. Generally only consumer-class drives (Quantum Fireball, Seagate Medalist, some IBM DeskStars) were sold with the same HDA on either ATA or SCSI; the high-end HDAs were only ever sold as SCSI ("real" Seagate Barracuda or Cheetah, IBM UltraStar, Quantum Atlas), though you could swap boards between narrow, wide 68, and wide SCA versions.
  7. Franklinstein

    G4 Cube DVDRW drive

    The early PBG4s used that same drive, but I think they were all Matsushita units where the Cube and iMac mostly used LG units. Either way they were huge and not terribly reliable, and with the rubber on the loading rollers and drive belts dried out after so many years, they tend to be unusable. I don't bother with the internal drive in my Cubes; I just use an external FW DVDRW that's faster and easier to use than any of the slot-loaders I've come across. MCE sells the mounting bracket that you would need included in the $99 kit, whereas the $69 kit assumes you already have the mounting bracket. The bracket is pretty simple, just some stamped sheet metal. Other people have apparently gutted the old drive and mounted the new one in its case (like on this tonymacx86 thread.) Otherwise try using the Wayback Machine with Cube Owner to see if you can recover the pages relevant to 3D printing a bracket (though I'd imagine this would be the most labor-intensive option).
  8. Franklinstein

    Cheap IDE on scsi bus solution?

    I found a SCSI-to-IDE bridge for about $5 in a junk shop a while back. After looking it up for sale online it seems to go for about $100, so needless to say it's not cheap under normal circumstances. You're better off with the SCSI2SD setup because they'll both cost about the same while the SCSI2SD will be noticeably faster. The 8100 does indeed have a secondary internal-only SCSI bus utilizing the NCR 53CF96 fast SCSI controller. It runs at 10MB/s, twice the performance of the primary SCSI controller. Pretty much every Mac with onboard SCSI used the slower 5MB/s controller, with some exceptions: most high-end Power Macs had two buses, the slow internal/external SCSI bus for the CDROM and whatnot and the fast internal bus for the hard drives, and there were also a few high-end 68k boxes (IIfx, a couple Quadras) that used fast SCSI.
  9. Franklinstein

    PowerBook Duo 270c

    Also try booting with a good Disk Tools 7.0 or 7.1 disk. Try a different power supply. Any Mac power adapter up to the original G3/iBook yo-yo power adapters will work (except for Portable, 1x0, 500 series, and 190/5300). Do you have a Dock with external video capabilities? Try using it in that to see if it has the same problems.
  10. Franklinstein

    is this card anything special?

    Are there any hints as to a manufacturer or model? It's not the Apple IIsi NuBus adapter because those have the FPU and NuBus controller on the card with just the one NuBus slot where this has only an FPU slot but has two staggered connectors. It could be a DayStar PDS adapter that allows for both a processor upgrade card and a PDS card in one slot, or possibly a SuperMac IIsi video card adapter that allows for two cards to fill the one external slot. If there are no markings I doubt you'll figure out exactly what it is. Check eBay's completed listings for values; without the companion expansion cards I really doubt it's worth much.
  11. Franklinstein

    Calibrate 800k/1.4mb Floppy drives 3.5"

    Larry Pina's books often have procedures for aligning floppy drives without lots of the specialized test equipment that Sony requires for a factory calibration. Try checking your local library for The Dead Mac Scrolls or any flavor of Macintosh Bible that he's published if you want a good walk through. From my memory, the basic procedures (for Sony manual inject only, though it should work on auto inject drives): You'll need a certified good Mac floppy for testing, either factory produced or formatted on a known-good Mac, to use for alignment. Make sure the disk is LOCKED or you will ruin it and/or screw up the alignment process. You will need full access to the drive while it is operating so don't try to do this in situ on a SE or Color Classic; you really should use an LC or II of some sort, better yet if you can fabricate a very long floppy cable so that you can have the drive connected outside of the computer and thus have lots of room to work on the drive. Also, clean the drive first, including the heads, to eliminate dirt as the cause of your problems. This procedure assumes the drive hasn't been damaged and isn't missing pieces. For track-0 alignment (generally only necessary if the drive has been completely disassembled and the drive asks to format every disk): There's a post on the side of the head assembly (an interrupter) on the side opposite of the motor, and it slides into a slot in a black plastic thing (the optical assembly) toward the back of the drive. The interrupter interrupts an optical beam when the head assembly moves into position, and when this happens the drive knows that it is at track 0. To adjust this, mark the current position of the optical assembly, slightly loosen the screws securing the optical sensor assembly, move the assembly slightly forward or back, tighten the screws, and then insert a disk. Repeat the process until the computer attempts to read the disk rather than simply saying it's "not a Macintosh disk." If the head alignment hasn't been bothered, this should be all you need to do as the drive will be properly aligned to track 0 and thus be able to read a good disk. However if the computer has problems reading the disk even after adjusting the setting for track 0, you'll need to adjust the head alignment. For head alignment (for a drive with new heads, that has been completely disassembled, or regularly has problems reading manufactured disks or disks formatted on other computers/other computers can't read disks formatted in this drive): There are two hex screws on either side of the stepper motor that drives the heads. Mark the current orientation of the drive chassis to the stepper motor body. Loosen these screws slightly and turn the motor body slightly one way or the other. Insert a disk and wait for the computer to respond. If it says the disk has problems, eject the disk, twist the drive motor body a little more in that direction, and reinsert the disk until the computer reads it reliably. If it instead says the disk is unreadable, try rotating the drive motor in the other direction until the drive attempts to mount the disk. Usually you would rotate the motor body until the drive starts to read the disk well, mark the position, then keep rotating it until it no longer reads the disk, mark the position again, and then rotate it back to a middle point between where it starts and stops reading the disk properly before tightening the screws. This usually ensures the best drive performance and is as good as it gets without getting into crazy test equipment.
  12. Franklinstein

    Colour Classic - should I or not

    I had one or two not work after a recap but they typically also are victims of battery leakage or other corrosion so there are probably other underlying problems that are not cap related. Another one had something leak onto the processor and basically dissolved half of the pins on it. I tried to replace the processor but that did not end well so I just got a replacement board. You'd figure original CC boards would be pretty common with everybody throwing them out in favor of various upgrades and mods, but it took a while to find a reasonably priced replacement (which I still had to recap).
  13. Regardless of all of the supposedly amazing things you're doing with grafting high-end chips into Amiga desktops, the purpose of this thread is to install a new processor in a vintage laptop that has virtually no ventilation and only the most meager of heat sinks. Thus, if you want to use the thing on battery for more than 30 minutes and/or not have it shut down from thermal overload in about the same amount of time, a low-power cool-running chip such as the CX or CXe, with a maximum power draw of 6.7W@366MHz (and less at the maximum 333MHz it would run in a PowerBook 5x0), is something to be desired, not scorned. I mean if you want to build your own 7447-based PowerBook 5x0 upgrade (which will draw up to 23W@1GHz and top out at just 924MHz (28x33MHz)), then please do, but the rest of us really aren't ready to take it to that level just yet, seeing as how they're still trying to arrange to do the original 603e-to-740 processor swap being discussed here. As far as the 750CX/CXe's package goes, yes it's wire-bonded and that's not the fastest technology ever, but it has a max of 700MHz and since its multiplier tops out at 10x (just like its contemporaries until the 750FX and 7450), the fastest it could possibly go in a 5x0-series machine is 333MHz, so it's kind of irrelevant. Also, yes, it has a heat spreader integrated to the top of the otherwise plastic BGA package. How is this a problem? It provides a large surface area directly bonded to the die, able to safely withstand a 2.2kg static load, and utilized to transfer heat to a proper thermal solution. Also the encapsulant on the underside of the package is designed to insulate the board from the die's heat, not transfer heat to it (the encapsulant is also a minimum of .244 mm away from the system board so there's no direct heat conduction). It doesn't transfer any more heat to the system board than would any comparable chip. In fact, I'd wager that it conducts less because normal FCBGAs have balls directly beneath the die. Anyway it's just a recommendation for one of the Plan B variants: 750CX on an interposer on the original BGA-style upgrade card. The low ball count and low package profile of the 750CX make it easy to work with and keeps the total installed height within original specs so you don't have to fab custom heat sinks or anything, and keeping the original upgrade card greatly reduces cost and effort compared to designing and building a whole new card. You'd still have to reduce voltages though since the CX only runs a 2.5V I/O instead of the 3.3V of the 603e, but this is a requirement in order to use pretty much any chip outside of the originally desired 740.
  14. Interesting. I had never bothered to read into the history of ZV before. I just knew it showed up in Macs around the CardBus era, so I figured it was related in some way. I would have to assume that the previous TREX controller doesn't support it, or at least the '030-era video controllers in these older 'Books didn't have any provisions for it. I have seen only one or two ZV cards in person, and the only one that comes to mind is the hardware MPEG decoder card for the WallStreet.
  15. They use the same package and that was the only picture I could find in a 10-second search that illustrated the point that I was making in that the CX has a flush top with the protected die mounted on the underside.
  16. Some people on Think Classic were able to get iBook G4s and/or early aluminum PB G4s running with OS 9. I haven't delved too much into it because I don't feel like hacking the OS and there may be a lack of video acceleration in some models. Still, it's an impressive feat and worth checking out if you only have a newer machine to play with.
  17. Meh, it's just an academic discussion on a forum; if there aren't constructive replies it's kind of pointless and may as well be a blog. Anyway this is all speculation: without some former Apple employees from the era here to explain why they did or didn't do something, we'll never know the rationale behind most of it. I simply contend that if they wanted to go big, they could have, but it wasn't worth the effort to one section of Apple or another (a likely combination of hubris, turf wars, and management wanting to save a buck and/or rush to market). Too bad, but I wasn't in a position to do anything about it at the time (I don't think they would have hired a 10-year-old) and my time machine is on the fritz so there's likely no fixing it now, either. It's hard to categorize all of these machines into large groups because a lot of them don't fit purely into one; you'd need about 10 subgroups for everything up to the NewWorld machines. For example, a number of machines still used psuedo-slots well into the PCI era: the Alchemy boards had their new Valyrie AR video processor, and it lived directly on the 60x bus. The 7200 had a weird hybrid video system (with its Iridium and Platinum chips) that also lived on the 60x bus instead of PCI. There were a few other oddball machines, especially those with heavy A/V integration, that also used psuedo-slots for things that didn't live on a proper expansion bus. As for the 3400, Kanga, and 2400 CardBus, System 7.6 apparently didn't support it so you would have had to wait until 8.1 anyway. The respective Service Source documents specify that only PCMCIA cards are supported, though apparently they will still do zoomed video which I would have thought was part of the new standard but whatever. Physically the 2400's card cage will accept CardBus cards, but they aren't recognized until traces/resistors (depending on board revision) on the logic board are removed. The 3400/Kanga won't physically accept the cards unless you mod the card cage, something about a ridge on the card connector that isn't present on the original PCMCIA standard. MCE used to advertise fixes for both machines.
  18. Have you ever seen a 750CX? It most definitely does not have a heat spreader glued on: it has a completely flat top surface because the die is bonded to a cavity on the underside of the package instead of protruding from the top of the package like its relatives. Because of this it has a lower profile (which makes it ideal for use on top of an interposer) and is basically immune to rough handling.
  19. So the whole reason Sonnet started shipping their upgrade cards with heatsinks bolted on and would void the warranty if they were removed is that clumsy installers were cracking the processor dies during installation. This is a huge problem with FC-BGA devices like this that don't ship with some sort of cap or other protection for the die. In an application where heatsinks would potentially be frequently removed and reinstalled, especially by a novice, a 750CX is ideal because its processor die is protected in a recessed cavity on the underside of the chip package, not exposed on the top. Thus, they're more robust than the FX and GX.
  20. While it's true that the 3400 used TI's CardBus-capable PC card controller, the card cage in the 3400 (and 2400) was not CardBus-compliant so the feature was disabled by Apple. If the 3500/Kanga didn't have it enabled, then the first PowerBook with proper CardBus support would have been the WallStreet in 1998.
  21. From reading the Apple Dev Notes, the only thing NuBus-related is in logical psuedo-space; there's nothing in these computers that runs NuBus physically or electrically: the machine is built from ASICs that talk either directly to the processor or directly to the '030 bus on the bridge chip. The only exception is the Duo series, and that doesn't really count because all of the NuBus-related hardware is in the Dock (and the controller is addressed directly by the '030 bus); there's none in the Duo itself. The desktop 52/53/62/63xx series is the same way: they have only psuedo-PDS and CS slots; nothing is physically or electrically NuBus. These machines (Duo 280, 5x0, 190, 5300, 1400) used different speeds and bus widths on the logic board: the processor bus, and the '030 expansion bus. Typically the processor/memory bus was 32-bits at 25 or 33MHz, depending, but the '030 bus was either 22 or 16MHz and devices could be 16 or 32-bits wide. In the Duo Dock, the 32-bit '030 processor bus could be up to 25 (original) or 33MHz (in the Dock II), but the variable 32-bit I/O bus was always 16MHz regardless, just like the LC PDS slot in desktops. (Yes, the '030 bus could run a nominally 32-bit bus with narrower devices on it using the "dynamic bus sizing" and "byte steering" features, both of which were not present in the '040 or 60x bus standards. This is the entire reason Apple kept building all of these bus translation chips: so they could keep using legacy hardware with minimal changes.) My larger point was that, if they had really wanted to, Apple could have introduced their first PPC PowerBook as a game-changing machine that would have justified its huge price tag rather than the underwhelming mess that we got. And who thought it was a good idea have a swappable drive bay without full-size CDROM support? Supposedly the design goal of the 5300 was to be "as small as possible." So, what was the design goal of the Duo 2300? Be more smaller? '90s Apple was full of dumb decisions.
  22. Franklinstein

    Brightness Knob on Macintosh SE

    So does the knob continue to rotate and just not dim the display further, or does the knob stop while the display is still medium bright? If it's the former you've probably got an issue with the pot but if it's the latter you'll need to make some adjustments to your analog board to bring your brightness and/or contrast levels within spec so that the pot has the desired effect.
  23. Back on topic, there are a number of PPC chips that are directly pin-compatible: BGA-encapsulated 603e and 740 750 and 7400/7410 750FX and 750GX There are a handful of other chips that are footprint compatible but not directly drop-in and as such won't work without some mods (in the case of the 603e and the 745). Any other chips are not cross-compatible and as such will either require an interposer of some type (such as used in the 750FX-based upgrades for Pismos) or a whole new processor card designed and built (like with the majority of past Mac upgrades). For this project, the only readily available solution is the 740. Further research may result in a mod or two that would enable the use of a 745. The use of any other chip will require an interposer or a new card. Personally I think an interposer would be the best solution because otherwise you'd have to harvest all of the chips off an existing card (at least, the ROMs and PBX) and then attach them to the new card along with any new chips you'd want to use (I assume you'd want to install more RAM, at least). With an interposer you just have to get the interposer itself built and mounted between the existing pads on the processor card and your new CPU. I've made the case previously for using the 750CX in these machines (and the 2300/5300/1400 upgrade projects) because it is a fast, cool-running chip with 256k of onboard L2 cache in a low-profile package that protects the processor die from accidental damage during installation. The FX and GX are faster, but they're hotter and more fragile, plus they have more pins than the CX. In addition, your return diminishes with each increase in clock frequency: at 667MHz (the maximum available at a 20x clock), the 33MHz memory bus is a huge bottleneck, not including the slower '030 bus on the rest of the board. The 750CX would be easier to implement and also its 333MHz maximum speed would be a huge improvement without wasting most of your new clock cycles in waiting for the rest of the system to catch up.
  24. thread jack/ As much as I like them, I believe the Duo series really gimped the rest of the PowerBook line because, in an effort to reduce costs and share parts between models, Apple likely designed chips to the lowest common denominator, which would have been the Duo series because of their legacy Dock architecture originally designed for the 68030 bus. To allow a 68040 or PPC-based Duo to utilize a Dock, the computer had to present an '030 bus in order to interface with the Dock's internals. So, it was easiest to simply bridge the newer processor architectures directly to the common '030 bus and as a bonus, you could keep using all the legacy ASICs (video, SCSI, ATA, etc) to save even more money and potentially improve your time-to-market. The MPC105 was introduced in early 1995 (the hardware spec manual is dated January), which may have been a tad late for inclusion in the 5300 project, but I figure Motorola would've had Apple, as part of the AIM alliance, in on or at least aware of its early development. However it's possible Apple's engineering team was unaware of it at the time, or they just wanted to roll their own chips, but a PowerBook 5300 with an MPC105 could easily have run with up to a 66MHz processor bus, full 64-bit memory support, and allow the use of fast PCI disk and display controllers, all of which would've been equal or greater than the PC notebooks of the era. Plus it would have enabled the use of off-the-shelf components to decrease cost and development time. Instead we got a late, expensive, slow machine built mostly out of compromises and broken dreams and that generally was viewed as a joke by most people outside of the Mac faithful. /thread jack
  25. Franklinstein

    Strange PowerBook G3 Configs: A tale of two PDQs

    According to the hardware spec, the MPC106 takes the PCI bus clock as its base SYSCLK and then runs the processor bus at a derivative of that speed. So the WallStreet likely uses a 33MHz crystal for the base PCI bus and then is multiplied to 66 or 83MHz for the processor bus. The 100MHz MPC106 is apparently a late revision (v5 or later) that isn't covered by the documentation that I've seen available on the internet. It seems the MPC107 (and its successor, the Tsi107) is different architecturally and is not pin compatible with the MPC106 so there's no simply swapping on a 107. There's a seller on eBay right now with some of the 83MHz 106 parts though if someone wanted to upgrade a WS processor card or maybe an early iMac. Maybe one day I'll get lucky and find a 100MHz 106 available. I have a few questionable B&W G3 boards that I could harvest one from, but then I'd need a reballing kit and preferably also the correct documentation to determine what changes, if any, were made to the clocking circuits. I assume sticking a 66/100MHz part on a board clocked to 33/66 would work at the lower speeds so long as none of the clocking specs changed, and then I could clock the processor bus to 100MHz from there.
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