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Patater

6502
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    44
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About Patater

  • Birthday 03/19/1986

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  • AIM
    CaptPatater
  • Website URL
    http://patater.com/

Profile Information

  • Location
    Austin, Texas, USA
  1. Patater

    Dhrystone for 68k Macintosh

    If you are interested in benchmarking with your cache disabled, I wrote a tool to help you disable the cache. Disabling the cache should make a big difference on Dhrystone results.
  2. Patater

    Dhrystone for 68k Macintosh

    I sold my Macintosh IIfx to a cool dude about two years back. It was missing a rubber foot or two. I told him that I thought I had seen one around and that I would send it to him, but I didn't find that foot until last month. He was happy to finally receive it. I also asked him to run Dhrystone for me. Here are the results from his wicked fast Macintosh IIfx, with 32 MiB memory, running System 7.5.5. 100000 runs: Microseconds for one run through Dhrystone: 130.0 Dhrystones per Second: 7692.3 200000 runs: Microseconds for one run through Dhrystone: 125.0 Dhrystones per Second: 8000.0 500000 runs: Microseconds for one run through Dhrystone: 128.0 Dhrystones per Second: 7812.5 Unfortunately, it isn't over 9000.
  3. Howdy comrades, I was asked to build Dhrystone for 68k Macintosh, just for fun. I felt I should share it with you all. This ancient benchmark will measure the integer performance of your Macintosh. Let us compare results, if feel so moved. Dhrystone for 68k Macintosh Results: Macintosh SE/30 40000 Runs Dhrystones per Second: 2666.7
  4. Patater

    MacTCP Documentation

    Thank you very much. The MacTCP Developer Kit is exactly what I needed. It even contained the document entitled "MacTCP Programmer's Guide", referred to by Falkenburg, which I couldn't find on the Internet. Thank you comrade!
  5. Patater

    MacTCP Documentation

    I'm looking to make some Internet applications for System 6. I'm having trouble figuring out where the MacTCP API is documented. I'd like to use MacTCP because it should allow my application to work with System 6 through 9 (with Open Transport being backwards compatible with the MacTCP API). I know of one fellow who has done MacTCP development recently. Unfortunately, on his web pages, there doesn't seem to be any mention of MacTCP books, manuals, online reference materials, or web pages. I can see that he is using MPW. I'd like to use Think C 5, but I can use MPW if I have to. This probably means making custom header files or modifying the MPW ones. Fellow comrades, do you know of any books, manuals, online references, or web pages that document the MacTCP API? Your assistance is much appreciated.
  6. Patater

    Stellar specimen of a TiBook! [PICS]

    That's a very pretty machine you have there. It's rare to find one in such nice condition. I picked one up new back in 2003, but it broke. It came with annoying stuck pixels. I've had to send it into Apple for various reasons. About a year ago, the hinges made a funny noise when exercised and the bottom half of the display was stuck displaying white. I got about 6 years of use out of the bugger. It was the most fragile, prone to failure Mac I've owned. I hope yours is longer lived.
  7. Patater

    My Latest Restoration

    Be sure to replace those old and prone to leaking caps. Max out the RAM, too. She's a beautiful machine.
  8. Patater

    Building a Dual Floppy Macintosh Portable

    I replaced all capacitors on the Portable, including the through-hole ones. The Macintosh Portable through-holes are plated through-holes. This means that solder is supposed to go down through the hole along the sides of the lead. It is easy for me to see that I had proper fill (at least 75%) when working on the axial capacitors, but it is harder for me to verify this with the radial capacitors.
  9. Patater

    A Naked and Nasty Macintosh Portable

    I had two dead Portable batteries. I wanted to re-cell them, so I attempted opening one with a screwdriver, but that totally messed up and and bent the plastic. I have one remaining, but I don't know how to open it cleanly in order to install new cells. I'd appreciate any advice you could give on rebuilding the Portable's battery. I acquired a flaky Portable in 2003. It would often crash or sad mac, but it could boot and do stuff more often than not. When I tried to play with it again around February of 2010, I found that my PowerBook 100 adapter had failed (by no longer outputting any current; i.e. as soon as a load is present, the voltage goes to zero). I replaced all the capacitors and hooked up an alternate battery, but currently all I can get out of it is a sad mac. Your battery opening advice might also help me to open and fix my power adapter. My goal for this Portable is to get it running solid with a good battery and a good power adapter so that I can do software development on it. I am reading Inside Macintosh now to prepare for this. Eventually, I'd like to boost its RAM to the max, and that will probably involve creating new hardware.
  10. Patater

    A Naked and Nasty Macintosh Portable

    If you installed any backwards, that is exactly the problem. You have a lot of Portables. What do you do with them all? Do they all have batteries that work?
  11. Patater

    Building a Dual Floppy Macintosh Portable

    It is great to know that the PowerBook 100 adapter is good for charging as well as running without the battery. It is also good to verify that it is a switching type. There doesn't seem to be any special rigging required in order to run off of a 9V supply. I was able to boot into a sad mac with just the 9V battery. A lot of 9V supplies are meant to replace 9V batteries and so come with a 9V battery connector on them. The only 9V power supply I have is a 300mA type, so that won't do me any good on this. With my PowerBook 100 adapter dead, I'm now on the market for a compatible power adapter. I had this 6V battery laying around, so I decided to hook it up. The cables for the Macintosh Portable battery didn't give me much slack, but I was able to hook it up and run the machine without the case on. This experiment should validate whether or not the sad mac is due to flaky power. Unfortunately, I still get the sad mac. However, the code is pretty consistently 03001300:00001FFA. This $1300 code might be a CPU exception code, indicating that I'm receiving an interrupt too early in the boot process (as per myoldmac). That in turn might mean that an interrupt line is being permanently asserted. As I'm not sure which caps are in the interrupt path (if any) I'll just look over all my work again carefully and hopefully I'll find something.
  12. Patater

    A Naked and Nasty Macintosh Portable

    Yes, trag's caps are great. I need to get some more from him. I am missing one capacitor in order to complete the replacement on my SE/30. I am also missing one capacitor in order to complete the replacement on my LC III. I was hoping to finish the SE/30 this weekend, but it looks like I'll have to wait until I can get my capacitor fix from trag again.
  13. Patater

    Building a Dual Floppy Macintosh Portable

    When the computer first boots up, it displays a funky pattern on the screen. This pattern goes away in less than a second. This is probably a typical memory check or something. In attempting to photograph that, I discovered that some other sad mac codes are displayed before the final code is reached. These transient codes do seem to have a meaning, but maybe not one that makes sense; do they really matter or are they just noise before the correct code is shown? I've found that a few different codes are displayed over my few attempts to start up the machine. The code is of the form "0030017xx:00001FFA", where xx can be one of 01, 38, 39, 3E. This major code 17 doesn't seem to be documented anyplace, but perhaps I just don't know how to read these errors. This is one of a few possible final sad mac codes. Here is my best guess. One of the sad mac major codes shown is 14. I suspect that because I'm attempting to boot from the 9V battery, the power manager is complaining. Because there isn't much power available, the sad mac changes around until it reaches some equilibrium on some invalid code. I'll have to try with a new battery and power adapter to see if this not enough power guess is on the right path. I'll be thankful for any guesses you have or recommendations for tests I should run.
  14. Patater

    A Naked and Nasty Macintosh Portable

    I finished capacitor replacement a few nights ago. Here are some pictures.
  15. Patater

    Building a Dual Floppy Macintosh Portable

    After I finished replacing the capacitors in this guy, I assembled it with the second floppy drive in place, connected with a self-made ribbon cable. The drives stack very well and are firmly in place. The upper drive could slide around if I forced it hard enough, but it is held in place with significant amount of metal squeezing metal friction. Unfortunately, I am currently experiencing some undocumented sad mac action; this may be due to attempting to boot from a 9V battery by not having the battery cover on. My PowerBook 100 power adapter is dead, so I'll need to explore alternate powering methods. I have a replacement battery I'll be wiring up to try out tomorrow, but I don't have a charger for it yet. By the way, if a PowerBook 100 adapter were available to me, could it be used to charge the Macintosh Portable without causing damage? I'm not familiar enough with the charging circuitry on the logic board (or possibly in the adapter) to say. It would also be nice to verify that the power adapter is a switching supply (as it feels pretty lightweight to me) or something else. Thanks for the information, comrades. I enjoy learning about these wonderful marvels of engineering. Your help is much appreciated.
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