Yep, this helps! Thank you very much!
From the date code, my 1000-WS board appears to be a little older than these. There's an IC amp and speaker connector on my board, whereas you have an empty spot where my amp is and a header for the sound/volume. There's also an interesting female connector right below the floppy connector - what's that for? You also have the parallel edge card connector, and mine has a DB25.
My high-res pic is here.
https://imgur.com/gallery/yzvrp
I'm still of the belief that mine actually has a Tandy DAC and Tandy Sound. I just gotta get my conventional memory up a bit to test King's Quest and need to figure out if the sound works there. I can probably find a MOD playing program that runs in DOS and uses the Tandy DAC to see if the digitized sound works.
Can someone on here dump their 8 pin serial settings EEPROM on their SL so I can get some sane EEPROM settings to burn to mine? The WS-1000 didn't have one by default; I had to put one so that I could get the MDA/CGA setting (CTRL-ALT-SHIFT-V) to stick.
Another thing I noticed with your side by sides... you have one board with the U13A and U13B populated, and one without. I wonder what this PAL and logic chip's purpose is. The U13 also has a socket, but I don't even see it in the SL's BOM chip list. The U13A and B are there, though.
The 1000WS I'm comparing the pics to was severely cost reduced. It has missing in it:
* Support capacitors for the missing chips and other missing small components to support the below
* Sockets for RAM >256K are missing
* Socket for 8087 is missing
* 3 ISA slots missing
* FDC connector is missing
* FDC chip (Zilog, Intel, etc) (Floppy Circuitry)
* SCQ38068PX05 Floppy Disk Support Logic Chip (Motorola) (Floppy Circuitry)
* 74LS00 (Floppy circuitry)
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