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Found 6 results

  1. My house is surrounded by snow and fallen trees so I had some free time to throw this together. I like the idea of having a custom rom in my se/30 because a 10 minute ram check is tedious every time I boot. However seeing that there are no open source projects out there for a rom-simm, and the next best thing requires an expensive programmer for no reason :^). I call this project "EconoSimm" because the total price of a unit is around $15. The major benefit comes from it using standard PLCC flash chips. So while the max memory is restricted to 2MB/16Mb anyone with a standard programmer can flash the EEPROMS. It's open source for everyone to enjoy Basically: Custom roms for less than the cost of a tank of gas Github link: Click here! Board: Totally not thrown together in gimp render: Schematic:
  2. Floofies

    MicroQuadra 630

    This is an anchor thread for a Quadra 630 project I am starting, which will receive periodic updates as the project progresses. The primary goal of this project is to build a custom, minimal vertical case for the Quadra 630 logic board. The case will not support internal expansion except for the PDS slot. All other peripherals and devices (CD-ROM, Floppy) will be made external. I have already created a 50-Pin to C50/DB-25 SCSI adapter for the CD-ROM drive. For materials, I want to use wood and perhaps black acrylic. I recall seeing a similar wooden AIO project once- a replica of an actual Apple design that never came to fruition -but I can't find it for the life of me! The project's main goals, in order of importance: Find a working CF Card (or SD Card) to IDE adapter. (There will be no room for a traditional hard disk in the case) Construct a minimal vertical case that will house only the logic board, PSU, CF/SD Card, Video-out board, and Front Panel Controller. Construct or hack together a smaller PSU. (Not required, but very convenient!) Create matching external enclosures for the Floppy and CD-ROM drives. Create a special cable and ports for the Floppy drive. Create a special audio cable and port for the CD-ROM drive. Modify the Front Panel Controller, repurposing the rear programmer's switch to create a light-up power button. Modify the video-out board for integrated VGA output. But why the Quadra 630? Along with other Macs that use the edge-connector and wiring harness, the Q630's internal design is very modular; a prime target for a custom case. It's also worth mentioning the Q630 has one of the worst designed cases I've ever seen Apple produce. In terms of ergonomics and usability (You can put your monitor on top of it...), it scores very high; but from an engineering perspective it's unnecessarily bulky for the amount of expansion it offers. If you never utilize the video or communications slots, you have a lot of dead space. There's also the fact that I generally dislike horizontal computer cases nowadays: LCD monitors are small enough that finding space is now a non-issue, resulting in the Q630 taking up way more space than I prefer. Expect some chunky photos of the early prototype soon! Cheers.
  3. I recently got involved in reverse engineering the power architecture of the Quadra 630, in order to do an ATX PSU conversion. One thing I noticed is the large differences in component values between models, and implementations. Now I am very interested in finding out what the differences are and what causes them, so there is a definitive "map" of these conversions per-model. I will be making a chart/graph showing implementation differences between different conversion methods. All I ask of the community is information. If you have done a conversion: what model Mac did you use, how did you do it, did it work, what were the specific components used, and their values? I'll also be compiling data from what I can find that's readily available, I expect I'll be taking a deep-dive into the snitz archive for this one.
  4. Some Macs, like the Mac IIsi, only have a power LED indicator on the front case and no LED indicator for HDD activity (unlike say in the SE/30). This is despite most HDDs or SCSI 2 CF or SD modules having LED out plugs that go nowhere inside these cases. Is it possible to buy or make a 2 Colour LED that does say both green (pwr) and yellow/amber (HDD activity) through the same light emitting diode, but with two sets of wire cables heading out to the respective HDD and Power LED outs on the motherboard/HDD? Anyone seen one, made one, or has one? Alternatively I guess one could (very carefully) cut a small slot into the case to get something like the Apple CD SC plus look. See image linked below: http://i.ebayimg.com/00/s/NDQ2WDYwMA==/z/qGMAAOSwstxVJrlD/$_1.JPG and mount the LED behind the plastic block that sits behind the cover. Anyone tried this and have some tips for cutting into these cases.
  5. Since this is the only board I have — and because it has a lot of captive wiring coming out directly from the board, I came up with this dirty cheap method of securing the wiring raising the board so to work on its back. There are some holes scattered along the board through which you could pass a 4mm wide screw. If you get this screw to be long enough, you can raise the board so that the wiring isn’t damaged while soldering. You must take care not to damage any vias in the process and you should be aware these protruding screws could function as a lever and easily break the board. But having that into account I have reach to the conclusion it’s the best way of working on the Analog Board (and cheapest). I previously tried using a B&D Workmate and a desktop vise to hold the board but since you can’t get a feeling of the force being applied to this fragile board, I dismissed them both.
  6. Anyone seen this and/or tried it out? It's a board that goes into the Apple II Slot to add a Raspberry Pi to it, done around 2013.... What is Apple II Pi? http://schmenk.is-a-geek.com/wordpress/?p=167 Apple II Pi Board: http://schmenk.is-a-geek.com/wordpress/?p=151 Apple II Pi System Software: http://schmenk.is-a-geek.com/wordpress/?p=135 Apple II Pi Utility Software: http://schmenk.is-a-geek.com/wordpress/?p=125 Apple II + Raspberry Pi = Apple II Pi : http://schmenk.is-a-geek.com/wordpress/?p=88