Jump to content

JDW

68000
  • Content Count

    1579
  • Joined

  • Last visited

2 Followers

About JDW

  • Birthday 02/25/1971

Contact Methods

  • Website URL
    http://retromaccast.ning.com/profile/JamesWages

Profile Information

  • Gender
    Male
  • Location
    Aichi-ken, Japan
  • Interests
    Church, family, travel around Japan, Mac computing, graphic design, web design, photography, videography, Newton 2100 PDA, System 6 fun on an SE/30

Recent Profile Visitors

785 profile views
  1. JDW

    Apple Hard Disk 20 repair: A success story

    Thanks for the confirmation!
  2. JDW

    Apple Hard Disk 20 repair: A success story

    Bless you! But do you also know the Diameter & Height info? (Lead Spacing is probably 2.5mm for all of them, perhaps 2.0mm.) The reason that Diameter & Height info is important is because of the required clearance. If I find a capacitor with the same capacitance and voltage rating, the size may be different from the original and it ultimately may not fit properly or at all. So if you have that information, could you please post it too? On a semi-related note... I found the following photo HERE and modified it with a couple red arrows. What is the purpose of those two pieces contacting each other? Is it an electrical connection? You can see the same thing in the following 3 photos of my GCC Hyperdrive here, except mind has a broken piece of blue plastic attached which I am curious about...
  3. JDW

    Apple Hard Disk 20 repair: A success story

    Did you happen to make a detailed list of the electrolytic capacitors on the Rodime 552 controller PCB that should be replaced? (Capacitance, rated voltage, Diameter, Height & pin spacing (2.5mm?)) We know all too well how these fluid-filled caps on our motherboards, analog boards and PSU's need to be replaced. These HDD controllers are no different. The need to recap applies to keyboards and mice as well. If you have not made a detailed list of those capacitors on your Rodime HDD controller board, I will tear apart my HD20 to glean that info, but I wanted to ask first, just in case you wrote that information down. No use doing the same job if another among us has already done it. Thanks.
  4. JDW

    SE/30 Recurring Freeze at Cold Boot

    Unfortunately, there is still no easy way to isolate differences intelligently. For example... Here's the BASE 512K ROM from Big Mess o' Wires (no disk image at all). And here's a copy of my IIsi.rom.zip (100% stock condition Apple IIsi ROM, copied to my iMac via my ROM-inator Programmer, which of course has no disk image either). When you open those two ROMs in Hex Fiend, you will find 1735 differences scattered all over the place. It's literally impossible to know what to make of those 1735 differences. Next... If you open that same BASE 512K ROM from Big Mess o' Wires (no disk image at all) and compare in Hex Fiend to the Rob Braun ROM (with no disk image), you see 1341 differences scattered all over the place! In other words, I really haven't the faintest idea how to properly go about moving code little-by-little from the BMOW BASE 512K ROM to either the stock IIsi ROM or the Rob Braun ROM in light of the sheer number of differences. If some of you folks do, please advise in detail. But please ponder it logically. Even if I could make the time to copy each and every one of the 1000+ differences, and test after each copy, because the code is scattered all over the place, I assure you it would just lockup the vast majority of the time. And the end result would merely be a worn out ROM and worn out ROM socket because of those 1000+ tests. Thanks!
  5. JDW

    SE/30 Recurring Freeze at Cold Boot

    Thank you for the advice, but what is the best approach to compare the two ROMs? You see, I downloaded Hex Fiend per your recommendation (and updated it to version 2.11.0), and then I opened my ROM-inator II MEGA's mega-simm-image.rom.zip (which has a large disk image embedded in it) and then opened Rob Braun's 8MB Version ROM (which doesn't have any disk image in it). After that I choose File > Compare (Shift-CMD-D) and found there are 1342 differences! Obviously, the bulk of those differences likely pertains to the disk image on the ROM-inator II MEGA's ROM which isn't present in the Braun ROM. But how do I make it easier to spot those "two or possible three differences" you mention I need to find? Thanks.
  6. JDW

    SE/30 Recurring Freeze at Cold Boot

    I've been testing this problem over and over for the last 2 months and I've made a couple key discoveries: 1. The freeze only lasts 2 minutes. Note that in my earlier videos I didn't wait 2 minutes and just tried to restart. If I wait 2 minutes, then the computer suddenly starts working again and never locks up after that. However, the 2-minute freeze is still a problem that needs to be resolved. I made a new video showing the automatic recovery from the 2-min Freeze here. 2. I tested every variant of RAM/ROM/Motherboard/Video possible and found the 2-minute freeze is an incompatibility between the ROM-inator II MEGA and the Daystar PowerCache 50MHz 68030 socketed accelerator board. No problems when the ROM-inator is used WITHOUT the Daystar board attached (i.e., when I remove the Daystar board, I of course put the stock CPU back into its socket and then test). This is a fact, and after countless hours of testing and applying solder to the ROM-inator, I know for a fact it's not a ROM-inator connectivity problem in the ROM socket. It's definitely the Daystar board and ROM-inator conflict. I wrote to Steve C. at Big Mess o' Wires. His reply to me was as follows: I tried Steve's suggestion (colored in red above) to use Rob Braun's older ROM and found there is no 2-minute freeze at all when used with my Daystar PowerCache! No problem! Specifically, I programmed and tested the following two ROMs to my ROM-inator II MEGA: http://synack.net/~bbraun/macsrc/iisi+romdrv0.9+nomem+nosum+img.bin http://synack.net/~bbraun/macsrc/iisi+romdrv0.9.6+nomem+nosum-8mb+chm.bin My successful testing with these 2 older Dougg ROMs indicates there's something the stock "mega-simm-image.rom" has which is causing the 2-minute freeze in conjunction with the Daystar PowerCache. I don't know all the differences from ROM-inator II (MEGA?) vs Dougg's ROMs, but the differences I do know are crossed out in gray below: - RAM test is disabled - startup chime is different - Happy Mac icon is different - A new software driver is installed during boot up to manage the ROM disk - There’s a splash screen / menu that shows info about the installed RAM and ROM disk, and prompts the user to press a key to select the boot method - Some regions of the IIsi ROM containing unused code/data have been overwritten with the code needed for the above features - The contents of the ROM disk are present in an address range that's beyond the range of the IIsi ROM - HD20 Compatibility I doubt the "startup chime" is the cause of the 2-minute freeze, so that leaves only the "splash screen" difference as a possible cause of the freeze, unless there's some other differences I'm unaware of. Do any of you have a ROM-inator II MEGA and use it with a Daystar accelerator? Do you get any kind of temporary freeze like I am? Any thoughts any of you might have would be greatly appreciated. Thank you.
  7. JDW

    Daystar Universal PowerCache P33 in SE/30

    I have the original green version TS Adapter: https://www.flickr.com/photos/66071596@N00/2406632009/in/album-72157633873937322/ I would be willing to ship it to you at my cost so long as you ship it back at your cost. But now that I think about it, maybe I should ship you my Daystar Turbo040 too so you can have a look? We never came to a resolution in the following thread: Let me know.
  8. JDW

    Daystar Universal PowerCache P33 in SE/30

    8.83 isn't too much under 9.4, but it's clear that because you get the same exact scores regardless of the Control Panel setting that something is wrong in the hardware, with that card and adapter combo not being compatible with the SE/30. Being "not compatible" doesn't mean it won't work, but it's clear the performance gain isn't there, although you would get a gain over the stock SE/30 configuration. The problem I am having is with lockups. While running those benchmarks for you, I actually had more than one lockup. It seems to occur as the system heats up, and this socketed accelerator really heats up, let me tell you. (It can't be the analog board or PSU or motherboard capacitors, because all 3 are recapped.) Have you contacted Manabu Sakai of ARTMIX to ask about compatibility with his TS Adapter and your card? If not, please ask him. His English isn't perfect, but he can surely understand that question. Just be sure to state which TS adapter version you have so he isn't confused about that. Use simple English sentences and you should get a reasonably good response from him.
  9. JDW

    Daystar Universal PowerCache P33 in SE/30

    OK. Below are my Speedometer 3 benchmark files (one file is v1.5.1 .sit and the other is the same .sit file but subsequently Binary encoded), with each benchmark saved in its own file. When you view the filenames, please note: PC = PowerCache PM = PowerMath EPM = Enhanced PowerMath Speedometer3_JDW.sit Speedometer3_JDW.sit.bin Let me know if the SIT file is usable as-is. Not sure if Binary encoded is needed when uploaded to this forum.
  10. JDW

    Daystar Universal PowerCache P33 in SE/30

    Thank you for the photos. Do you have the original documentation for it? I'm curious if Daystar officially says it will work properly in the SE/30, or if it is intended only for the IIci.
  11. JDW

    Daystar Universal PowerCache P33 in SE/30

    Speedometer 3 test variations are these: PowerCache On, PowerMath On PowerCache Off, PowerMath On PowerCache On, PowerMath Off PowerCache Off, PowerMath Off (same as if PowerCache control panel not loaded at boot time) PowerCache On, Enhanced PowerMath On PowerCache Off, Enhanced PowerMath On Hold down Option & CMD keys while clicking on the PowerMatch switch in the control panel to enable Enhanced PowerMath, which will then be shown by "PowerMath" being underlined. With PowerCache OFF I get about 9.5 in Speedometer, and with PowerCache ON I get 13.7. And yes, I do see a boost in FPU performance for some operations with Enhanced PowerMath ON versus regular PowerMath ON. I am still building Speedometer 3 Machine Records for you, which I will post in SIT format for you in a few days (sorry, I'm quite busy the next few days). My disk tests will be slow because I booted off my FloppyEMU. I even got a "FATAL ERROR" display on the FloppyEMU just now during disk testing for some unknown reason. Anyway, I used my Micron Xceed Grayscale adapter to complete all the video tests. In monochrome mode though, the Color30HR is only as fast as stock graphics. I look forwarding to seeing your photos.
  12. JDW

    Daystar Universal PowerCache P33 in SE/30

    Please post a nice photo of the FRONT and BACK of that PDS slot adapter. I've not seen one before. I've only scanned a photo of the Daystar version here: You also are forgetting the need to benchmark ENHANCED PowerMath, which I mention in the following thread (which I will benchmark for you later):
  13. JDW

    Daystar Universal PowerCache P33 in SE/30

    I have the original TS Adapter, photos of which you can see here: https://www.flickr.com/search/?user_id=66071596%40N00&sort=date-taken-desc&text=twinspark&view_all=1
  14. JDW

    Daystar Universal PowerCache P33 in SE/30

    Your Speedometer 3 performance score of 9 is about what I get with my CPU-socketed version Daystar PowerCache 50 MHz accelerator when the Power Central control panel is NOT loaded at boot time. And by “socketed” I mean my accelerator connects to the CPU socket on the motherboard, and no Artmix adapter is required. Low or unstable voltage should not have any affect on whether the cash is activated or deactivated. If anything, unstable voltage causes freezes. What version is your Artmix adapter? I would say that part of the equation is suspect. Have you contacted Manabu Sakai of ARTMIX about this problem?
  15. JDW

    SE/30 Recurring Freeze at Cold Boot

    I put my Micron Xceed Grayscale adapter (yoke board) and Color30HR PDS card back in using my spare Analog Board and tested for well over an hour. No horizontal jitter. So it's clear the jitter came from my other analog board, even though it was recapped at the same time and with the same capacitors as this other analog board which has no jitter. I also swapped the flyback on that other analog board (the one with the jitter), so I'm curious as to what component on the board it could be causing the jitter. As to the freezes I've been getting, those continue even with the new analog board. I've not yet moved back to the stock ROM since it too me a while to secure my ROMinator II MEGA in this motherboard. But since the motherboard is recapped along with the SONY PSU, it must be either the ROM or the socketed Daystar 50MHz 030 PowerCache accelerator causing the freezing. Even so, when the freeze happens, I can then shutdown for 20 seconds, then flip power ON and it won't freeze after that, so long as I keep the machine ON. It's a crazy problem.
×