Screen artifacts with a IIfx ROM — #9

Post #9 by JDW

Source Forum	Screen artifacts with a IIfx ROM — #9
Category	Hardware
Post Date	Wed, 4 Jul 2007 - 23:41
Original URL	https://68kmla.org/bb/threads/screen-artifacts-with-a-iifx-rom.8958/

Post

...you told me the IIsi rom still produced the strange garbled artifact that I (and everybody else) get with the IIfx rom. Did I misunderstand what you said?

Yes, you totally misunderstood what I said. And I've said this in other threads on this site and on AppleFritter too.

With the IIsi ROM, without the IIsi ROM, with the IIfx ROM, without the IIfx ROM, or with any of the 3 the SE/30 ROMs that I own (all with different chips and manufacturing dates) the strange artifacts still appear on my particular SE/30 logic board (which is not the same as the "checkerboard pattern" artifacts that are the topic this thread).

So now, are you saying that with the IIsi rom, the SE/30 boots 100% normally, as if it had the stock ROM and a 100% working logic board? Have you tested this on more than one logic board?

I'm not saying anything different than I have said before, either in previous posts or to you directly. I get the artifacts on startup. They vanish after a few seconds. The machine then boots normally, regardless of the ROM installed, and the whole machine works perfectly fine.

And as I've said before, I cannot test on another logic board because I don't have another working board to test! I actually told you this in a PM in the past and you then replied to me by PM to apologize for having bought up all the SE/30 logic boards on EBAY. And you also told me that you sent some to Tyler for recapping and that if they come back you might consider selling me one so I could test this!

So, for the record, folks, the IIsi ROM is NOT, and I repeat, NOT causing the strange artifacts problem! And keep in mind that my strange artifacts problem is not the same as the "checkerboard pattern" problem that is the topic of this thread.

Personal experience. I have tried both in my SE/30 -- upgraded with the 68030-slot DayStar PowerCache accelerator (50MHz) and an ancient Kinetics ethernet card.

Outstanding, Charlieman! I always rejoice when something new pops up in a thread.

Such that we can all see what you are seeing, could you kindly post a photo of your screen for us when the non-stock ROM is installed? Even if you've seen it happen before, it would be good for you to test it again. (You'll need to upload the photo to Flickr or AppleFritter or another hosting service and then link to that location from this thread).

Please set your camera on a tripod when you shoot to avoid blurring. This is an important point because we are examining pixel data on old CRT screens here. We can then discuss this topic in more detail at that stage.

Thank you!