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  2. Dark Castle was written in straight 68000 assembly language, taking advantage of very low-level processor instructions. I could see it being very easy to make it fail if certain functions were changed/implemented differently via an accelerator.
  3. Today
  4. BadGoldEagle

    Modern printer on old Mac?

    Hi all, Just thought about this the other day. I know it's possible (with some limitations) to use an Imagewriter II on modern versions of macOS or Windows with a USB to Serial adapter. I wonder if the opposite works... I have just bought a new Inkjet printer, it's a Canon TS8150. I use it over Wifi but it does have a USB B socket at the back. I'm not too big a fan of old printers. I think they just require too much maintenance to get them properly working. My original IW's mechanism is completely stuck due to rust. The foam is also completely gone. Hardware wise, this adapter would need to have the exact same wiring as the 'IW2 to USB' cable. I'm more worried about the software side of things. I found this Apple Communities thread about someone wanting to use a modern Brother laser printer with OS9. Someone recommended the OP to use the Laserwriter 8 drivers as they support PCL6. However, I have no idea if the Canon still supports this protocol? Looking forward to your thoughts on this. Cheers, BGE
  5. BadGoldEagle

    Macintosh Plus Logic Board with Brainstorm Accelerator

    Just out of curiosity, does your Radius Accelerator 16 exhibit the same sound glitch?
  6. I entirely agree. I have a couple 030 accelerators in Pluses and the sound quality is pretty bad. You’re right, there must be something at a lower level with how the accelerated motherboard produces sound because the problem seems ubiquitous with all software. At some point I might try writing a little program to produce sound a few different ways and try to figure out what’s going on—there were a couple system calls to play sounds, which differed in the older Sound Driver and the newer Sound Manager. It does seem weird that even using these system calls generates distorted sound on an 030 accelerator, since obviously they sound fine running on a native 030 on a IIci or whatever.
  7. LaPorta

    Performa 631 Floppy Replacement

    I dont know 100%, but I would assume that the insertion slots would not line up properly.
  8. Simple question, but I can't find a simple yes or no out there. The floppy on my 631 is acting up, probably just needs a cleaning. If I need to ultimately replace it, do I have to find another manual inject, or can I use an auto-inject superdrive in this machine?
  9. Trash80toHP_Mini

    68K (no Mac) Designs OK?

    68030 does have a lot going for it in terms of development platform, are they still making embedded system versions?
  10. johnklos

    68K (no Mac) Designs OK?

    I had a Sinclair QL, which was quite a fun little machine based on the m68008. Of course, there's the Atari ST, the Japanese LUNA machines, Sony's NET WORK STATION workstations, NeXT, of course, Sharp's X68000/X68030 series, Hewlett Packard's 9000 Series 300 and 400 workstations, Suns, Apollos, plus lots of VME boards, including multiprocessor systems. Let's not forget the Tandy TRS-80 Model 16 and Tandy 6000! There were plenty of others I'm not remembering right now. I'd love to build a simple system some time using either the 22 address bit version of the m68008, or perhaps an m68030 since it can size its bus to 8 or 16 bits, plus it can run Unix / BSD without extra chips because it has an MMU. One day!
  11. I'm sure I will need them, especially if the three Mac Pluses I mentioned in another thread all turn out to have defective floppy drives. But, I may have to pay you to fix them for me at some point.
  12. LaPorta

    Mac Plus Floppy Drive - should I replace it?

    You know, if you ever don't need those other 800ks...
  13. I agree that a computer doesn't feel completely restored without a working floppy drive. I have a Mac SE that I restored from multiple machines, yet was frustrated by the lack of a functional floppy drive. Tried cleaning and lubricating one or two drives without success. Maybe three; I don't remember anymore. Finally bought a working one (from LaPorta I believe) so that I could finally have a fully functional machine. (Of course, now it may be having SCSI problems but that's a separate issue. . .) I have a Floppy Emu for it, so a floppy drive isn't absolutely necessary but it just doesn't feel like it's a fully functional computer without it. I will primarily use the Floppy Emu with it, but it's nice to know there's a working floppy drive in there should I ever need it.
  14. Crutch

    800k drive won’t spin

    Oh sorry you mean the 3.5 drive case. That’s an A9M0106
  15. 68kMacx86

    Performa 600 won’t turn on

    So I found a bunch of capacitor goo all over the Egret chip. I decided as painstaking as it is to remove the board and wash it. Then I used a hair dryer to dry it. First try to power on was death chimes. So I hair dried it some more and allowed it to sit while my wife made dinner. I wolfed down my ribeye steak and put desperate housewives on paws. It clicked. Wouldn’t power up but clicked. Tried another PSU. It clicked. I let it sit some more while I watched the rest of desperate Housewives and then I tried to turn it on. A beautiful chime followed by a power off. Took a few more tries to get it on. Now it seems ok but I’m not sure
  16. NE555

    another simasimac

    @Bolle Address lines 23 to 31 where do they go from the CPU? I traced 25-31 to UJ6
  17. dcr

    Mac Plus (Probably) that Won't Boot

    No. It just occurred to me that I should try booting with the Floppy Emu. I didn't have that the last time I tried to boot these Macs.
  18. Yesterday
  19. Dog Cow

    Mac Plus (Probably) that Won't Boot

    Have you ever gotten these Macs to boot?
  20. dcr

    Mac Plus (Probably) that Won't Boot

    I was hoping it's not the floppy drive. LOL. I seem to have a collection of non-functional ones. I do not remember for certain but I don't think so.
  21. Dog Cow

    Mac Plus (Probably) that Won't Boot

    Do you get the X floppy disk icon on the screen when it ejects the floppy?
  22. waynestewart

    800k drive won’t spin

    Ok but I was meaning the case which would likely be one of these numbers A2M2053, M0131, A9M0106, G7287
  23. Byte Knight

    .img files with old Macs

    I have not. What format would one convert it to?
  24. NE555

    another simasimac

    I had some partial success. I found a dateline that has been OL and when I traced it out I found out that it ended up in a via by C12. I was able to reconnect that Data line back to the CPU. and now I get some distorted boot chime and a variation of Simasimac. I guess I'll have to probe the address lines next. Thank you for following up
  25. LaPorta

    Mac Plus (Probably) that Won't Boot

    Try a known good floppy drive in each machine and see. If that one works, I’d assume floppy drive issues. Could be dirt on heads, head misalignment, or even electronic failure (less likely). If no drive is good in a machine, could be logic board issues or cable issues.
  26. dcr

    Mac Plus with 4MB of RAM

    Thanks all! It seems like the best bet would be to buy a Kensington System Saver just to be on the safe side.
  27. dcr

    Mac Plus with 4MB of RAM

    Thanks for that. I wondered why it seemed sluggish to boot but otherwise fine.
  28. I have three (four?) compact Macs that I cannot get to boot from a known-good floppy disk with System 6.0.8 installed. The backs all say Macintosh Plus, but the fronts vary. So, perhaps these were upgraded from 128k or 512k machines to the Plus. To the best I have been able to determine, they all have 800k floppy drives. (A couple months ago, someone here posted an image showing how to distinguish between a 400k and 800k floppy drive and, according to that, these all have 800k drives.) No sad Mac codes or anything else out of the ordinary. They just spit out the floppy like it has no operating system. Is there anything besides a defective floppy drive that would cause them not to boot?
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