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PRAM reset first this sometimes takes anywhere from 1-5 tries on LC's (command + Option + P + R while booting). Also the SCSI cable is unplugged in the photo. Let me know if any progress happens after you try this.

Don’t have the exact SCSI chip I have one off a iisi right now that may or may not work, as for the LC520 board I have I can confirm everything on it is working. In regards to your board there is a seller in eBay selling the chips for about $25USD

I have a spare LC520 board, can you take a picture of the Color Classic logic boar? I ask because I might have spare SCSI chips.

No worries just when you get a chance, trying to see what all I can do.

Would this programmer work you suppose? The TL866ii Plus I have doesn't support the 68HC05's, I do have 3 spare fully desoldered EGRETs coming in the mail. When these arrive I can try and see if it can autodetect a compatible chip but no promises.

I see, well I’ll try and locate said chips.

Didn’t these types of chips need a special programmer?

Did you manage to find any chips that have similar pinouts or none so far, awesome work you have done here.

Here’s an LC EGRET pinout, someone else made it already but I can think of any chips off the top of my head that will work. Any ideas?

Awesome happy to hear it boots wanna provide some pics of it booted?

I have a SCSI chip for that board.

LC 475 uses a 341S0788 also a -6 variant on one of my many iisi boards, hmmm I'll see if I can extract a .bin

I'm looking too you have a great start here.

I looked at some of these, very interesting, I was thinking maybe order a plcc and program it and make a weird adapter, any ideas?

Is there a pinout of this chip?

Yeah figured, I’ll look some more today

I assume something like this would work with maybe minor tweaking.

I'd be happy to help!

I have the .bin If they are of any help

Did you use the LC040 or the 040 with the FPU, also was this the guide you followed?