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I assume a standard mac 8 pin mini-din serial cable will have all lines connected at both ends, but whether Kermit or any other terminal program on the mac can be made to actually use RS422 I just don't know. I'd be more interested in learning what your other printers use. If it can be...

Oops, I missed that! I looked at Branchus' snooper loopback pinout and it is specifically testing TxD/RxD- and handshake lines. TxD/RxD+ are not connected. That is probably a non-issue as those are the two that would normally be connected when hooked up to an RS232 device (which the IW at least...

I have some thoughts on this, that may be something or nothing. The old mac serial ports are RS422, which is a four cable differential serial connection. However, there are three additional lines in apple's implementation, two for some kind of handshaking and clock sync, and one that is called...

Yeah I saw your post on TD, seems like you have some more serious issues with that drive, corrupted partition map or something...

Long time since I've messed around with restoring images on old osx, but restoring from a disk image will I think overwrite/modify the partition map to match the size of the image, not the partition you are restoring to.* So, I am presuming that the Sorbet image is 10GB? And that if you...

I've never seen these symptoms on a vintage Mac so I can't say categorically, but on modern gpus that kind of artefacting is common and pretty much guaranteed to be a vram fault, usually caused by a sdram ic overheating, being overclocked too far, or simply dying. The reason I suggested trying...

I'm thinking that almost has to be vram or ramdac right? Does changing the bit depth to something lower make the problem go away?

Not at home to check anything just now, but I use a SCSI2SD v6 on my Q800, which as you probably know is the same logic board as the Q650. Replying to remind myself to look when I get home! What I can tell you from memory is that I specifically recall also not being able to boot with SCSI...

I don't know what U46 does on the 610, it's a simple logic gate ic, it should be fairly trivial to see what it's connected to and figure out it's function. I don't have a 610 unfortunately. The scsi controller is the 53C96. IOSB is a multipurpose IO controller. A faulty IOSB could potentially...

If a pad has no trace and no via then it is not connected and is only there for mechanical purposes (something to fix the pin to so that it's not dangling in thin air). I have a Q800 board, which shares common system architecture with the Q610, with dead scsi that I have not been able to...

I don't have a portable, but I assume the case is typical ABS? Use a fine pointed brush to run some Plastruct Plastic Weld* into the crack and squeeze it together as well as you are able for as long as you are able. * eg: https://www.gaugemasterretail.com/magento/plastruct-plsweld.html...

SCSI2SD behaves like a physical drive, not an image based drive emulator like some others. You need to configure it (configure volumes on the SD card, while connected to the scsi2sd via usb) using the scsi2sd-util software that you can find on the codesrc website. Writing data to those volumes...

That's about the only possibility. I was by necessity quite rough with the read heads, the build up on them was very difficult to remove. It's rare for things to fix themselves!

Here's a weird one. 6-ish years ago when I bought my Quadra 700 the floppy drive was totally solid with years of caked on dust, and incapable of injecting or ejecting a disk. I stripped, cleaned, lubricated, just the usual, and it worked great afterwards. Fast forward to a couple of years ago...

Can't help with your question directly, but my default solution for all my vintage machines is one of the very cheap wifi bridges linked below connected via ethernet to the computer in question. Connect it via ethernet, log in to it's admin interface, put it in Repeater mode and connect it to...

OpenTransport works at least back 7.1 Pro because that's what I'm running on my Q700. Connected to my wifi network using a AAUI-10BaseT tranceiver connected via ethernet to one of those super cheap amazon/ebay chinese wifi bridges. You have to be careful which version of OT and use the version...

Now that is really interesting! I had no idea such a nubus card existed. The sparse info available on the internet seems to only mention Presenter* and Infini-D as compatible renderers, were there others. *IIRC the full title of this product was VIDI Presenter Professional? I distinctly recall...

I guess I'm the exception to the rule, but I don't really use a bridge machine. Navigator 3 on a Quadra downloads files just fine from the Garden. It struggles with the Repository, but I notice the owner of that site has made a pretty cool little downloader app for old Macs for that site...

Lots of potential purposes for GPIB - commonly found on old computer controlled industrial equipment in applications where RS232 was too slow.

Have you seen any review or benchmark data that includes the Lightning? As best as I can remember, I haven't seen any. Initially I confused the Paintboard Lightning with the Paintboard Li which does appear in those old MacUser benchmarks, but they are not the same card. You're not doing the...