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Dog Cow

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  1. High speeds are possible; AppleTalk is 230. Sabina TCP does 56k on an 8MHz 68000. I timed an HTTP download at 3.2kb/sec last week using the Neptune Web client. On the SE/30, at same baud, it goes about 4KB/sec. The serial ports need special configuration, but they can go higher than 56k. Much higher.
  2. 1.) The Macintosh II, released in spring 1987, was the first Macintosh that did not have built-in video. 2.) Immediately 3.) Framebuffer is accessed thru NuBus memory. The framebuffer is on the NuBus card. It is memory mapped into the CPU's address space. Read Inside Macintosh volume V for details on NuBus and video for the Macintosh II. It should give answers to some of your other questions.
  3. 1.) If you mean as its internal drive, then I would say no. 2.) There were more FDHS drives produced than any other kind of 3.5" disk drive for Macintosh, so probably more of them still exist today, so probably they are not too hard to find.
  4. Have you read the discussions about CopyBits versus BlockMove? https://macgui.com/usenet/?group=23&id=22149
  5. If the device uses PPP over serial, then you could try MacPPP It works with OpenTransport.
  6. Have you verified clearance, that is, head height for the populated board?
  7. My Sabina TCP/IP stack has better ping latency and TCP ACK latency on the SE/30 than any 68000 Mac.
  8. Use the Finder's Set Startup command to set the initial application to run when the disk is booted. This startup application name is stored in the disk's boot blocks.
  9. I followed my own advice and last night I read through the DI package chapter in Inside Macintosh IV. Just as you already saw from reading it, the HFS DI package, according to the text, will only make an MFS volume on a single-sided disk. Short of disassembling the package and patching the code, it looks like this route is a no-go. I also reviewed the Partition Map documentation in the SCSI Manager chapters of both Inside Macintosh volumes IV and V. This step may be an unnecessary one; the File Manager may accept a partition map entry that's labeled as Apple_HFS, even though the vo
  10. I pulled my Inside Macintosh volume V off the shelf last evening. If you look in the SCSI Manager chapter there's the documentation on the partition table. There's a code for an MFS format partition. I think that's step 1. Will any utilities create an MFS partition? I don't know, but you can always create a small HFS partition, then use a block editor like FEdit to make your own changes to the partition table and change it to MFS. Step 2 is to create the MFS volume. The disk initialization package should be able to do this for you, but you'd have to access it programmatically thru
  11. Yes. Good. I'm glad that you made some progress there. I use MacTest 7.0
  12. These are System Bomb errors? If so, both are Segment Loader errors. I'm rereading your story again carefully, and I have some more questions and a hypothesis: 1.) The very first floppy you booted from you said was a "copied System 6 disk I had laying around." Do you remember if this disk was locked or unlocked? 2.) Same question as before regarding the 512/800K System Tools disk that "eventually stopped working." Was this disk locked or unlocked? My hypothesis is that your machine still has faulty RAM, but it's not a fault that the built-in RAM
  13. Your response is why I initially didn't want to make that remark about interference with the floppy drive: I wasn't convinced beyond a doubt that it was applicable to your scenario, based on your written description and the photos. But that knowledge may be useful to you or others in future when working on a compact Mac and its internal floppy drive.
  14. I read your story this morning, had an observation to make, but decided against it. Now that I see that still no one has replied, I will go ahead and remark that the CRT emits radiation which interferes with the floppy drive I/O. The metal mounting bracket shields the drive against this radiation, but depending on how you have disassembled your Mac and its drive, the radiation may still be affecting the drive. The earliest Finder versions from 1984 had no Shut Down command, and you could not drag a disk icon to the Trash to eject it.
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