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EagleTG

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    Near Allentown, PA

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  1. Hi LaPorta, the zip file that NJRoadfan posted had everything I needed. Just in time, too. I had an exhibit at VCF East that starred my PowerMac 6100 and DOS card. Thanks for the offer. I have what I needed, but maybe it’s worth posting what you have just on the off-chance it differs from the other stuff that’s abaialble. Really appreciate all of the assistance!!
  2. These are awesome, and exactly what I needed. THANK YOU! I wonder why they weren't (or didn't seem to be) in any of the other disk images that I downloaded? You are the best!
  3. This is awesome, thank you. I am already on the right track based solely on this info, will try installing the drivers and let you know. Great site, I've been there many times. The drivers they link to are (sadly) only two floppies, one for Mac and one for PC. In fact, the link on the site was broken when Apple removed their legacy support pages. One suitable mirror link (for future Googlers) is: http://mirror.macintosharchive.org/download.info.apple.com/Apple_Support_Area/Apple_Software_Updates/English-North_American/DOS-Windows/DOS_and_PC_Compatibility_SW/ Thanks again guys, this is all great info.
  4. Hi all, I've been messing around with my Power Macintosh 6100 DOS compatibility card and have run into an issue finding an image of the CD-ROM that allegedly includes some additional drivers that were not included on the floppies (or were included on floppy in some versions?). Information I have found thus far online has been a bit unclear. There might not even be a CD, but Apple's own documentation seems to reference one. For example, the following post shows no CD in the box contents, but seems to include many more floppies than I've found imaged online. I have the "official" set of 1.6.4 and 2.1.7f from Apple, but they don't seem to include enough of what I need. I have sound working via generic Soundblaster 16 stuff, mouse is OK in Windows and DOS (used generic drivers). My big challenge is in the video department. I can't seem to find compatible VESA drivers for the video card. I've even tried various versions of UniVBE with no luck. Certain versions detect it, others won't detect. The ones that detect it have crashed in random and weird ways when I've tried to use them. The card is apparently a Chips and Technologies 82c450 (sometimes nicknamed the 450), I've found sites that reference the chip on this card as a 65xxx but I can't seem to get 65535 or other drivers to work either. I also can't seem to find Windows 3.1 or 98 drivers. I was, however, able to get Windows 95 going in 640x480 at 256 colors (but nothing higher). I wanted to go spelunking around the depths of the Internet Archive, but can't seem to figure out what C&T's domain name was to see if they had some drivers available. I've also tried finding other systems that utilized this video chip and had some success finding files, however none of them worked when I tried using them. (Specifically the Toshiba LC110 Any help would be appreciated. Thanks!
  5. EagleTG

    IIgs Keyboard

    The picture is from Herb's RetroTechnology.com site. He seems to take pictures of most of the stuff on his site with it sitting in the grass.
  6. EagleTG

    512k repair

    Ahh, didn't see that you are over seas. They seemed quite reasonably priced including shipping for me, but I'm state-side. Good luck if you decide to pick the project up again at some point.
  7. EagleTG

    512k repair

    Maybe the two links in this thread would be of-help? https://68kmla.org/forums/index.php?/topic/29299-wtb-512kplus-flyback-transformer/
  8. EagleTG

    Mac Plus Flyback Compatibility

    Congrats!
  9. Ok, thanks. I did replace both of the CNY75GB opto-isolators, so I'll investigate the resistors and switching IC. Thanks again for the help.
  10. Thanks techknight, I appreciate the assistance. I know it's been a while, but I'm poking at this machine again. Current status, I've completely recapped the analog board. I had wanted to complete this, but needed to order some additional parts as there are some bizarre values on this board (and very tight quarters so physical dimensions are of more importance than most electronics I repair). That's done. Glad I did, too, as I found some additional caps that had quietly leaked (no visual indication, passed ESR test, stank upon heating/desoldering and had small puddles under them). I've also spent a lot more time researching the issue, but I'm still in the same boat. Oddly the machine boots up to a flasing ? floppy icon every time (because the drive is disconnected or doesn't properly spin up). The voltages being low don't seem to bother the logic board from a base functionality perspective, if in fact the voltages are low there as well. The hard drive definitely doesn't like it. Are there good points to test for power at the logic board? I know the floppy port is a great spot on other "toasters", but not on this one. I don't recall yet having checked the feedback resistors as you recommended. Forgive the potentially stupid question, but would these be resistors that are part of the optocoupler/optoisolator circuit? I'm also wondering if it's worth getting the schematics from MacCaps? I know they are reverse engineered, are people generally happy with the purchase? I don't mind spending the money for a quality product. Thanks for any additional hand holding anyone here can provide. Edit: One additional question, is there any way to work on these more easily? Getting the AB in and out of the frame is a painful and tedious process. I haven't tried ripping the entire thing apart to see if I can isolate the board connectors for use in a "bench test" style environment. Any tips from that perspective, or is it just "take board out, work on something, put board back in, test"? -Todd
  11. EagleTG

    Repairing broken CRT mounts on a SE

    I had some pretty decent luck rebuilding similarly demolished mounts using standard "JB Weld". I've used a lot of epoxy, this was the first I had used JB Weld for anything, and I can truly say that it's incredible beyond the shadow of any doubt. Stuff sets like steel. Normal epoxy gives you some chances, and then you can clean it up via files, etc. once it's dry. Not so much with this stuff. Both good and bad I guess.
  12. EagleTG

    Apple 2c and 3.5 floppy disk

    According to the Apple II Wiki Reference, you can use a Apple UniDisk 3.5 (A2M2053) with a later version of the //c ROM. http://apple2.info/wiki/index.php?title=A2_3.5_Drives There was a really nice compatibility chart floating around, but I'm having trouble finding that right now. Found the chart:
  13. EagleTG

    Compact Macintosh Value? Plus, SE, SE/30

    It also depends how much you value your time and/or enjoy working on the machines. For me, I'm OK not making a whole lot on resale, as I enjoy the process of repairing the machines. Once they are up and running, I tend to enjoy them far less. LOL
  14. EagleTG

    Compact Macintosh Value? Plus, SE, SE/30

    I've picked up my fair share of all of the LC series for between $25 and $40. All of these wind up needing capping. The toaster Macs are "generally" under $100. Most of them vary between $40 and $75 depending on condition, included accessories, functional status, etc. The SE/30 trends higher, maybe $100 or so (again depending on condition, accessories, functionality). The original 128k being the most expensive of the lot in my experience, the price of which also seems to be wildly variable. Color Classics are also higher. Your suspicion is correct, eBay sellers are generally higher. One nice tip, if you go to eBay and do an advanced search/filter you can flag "Sold Items" which will give you an idea of what people are paying for stuff. Keep in mind, shipping cost is generally a concern as well and probably figures into the buyer's bid amount. Good luck!
  15. EagleTG

    Macintosh 128k issues

    Oooh, that's a great tip, and a great use for an older iPhone!!!
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