If you go into the accounting system, I think it would be under "Version"?
This is how you do it...>>>
Press the little white Test button on the MPU cage, once momentarily, to get to [1 Accounting]
Press the Spin button once to get to [1.1 Terminal Accounting]
Press the Cash Out button 4 times to get to [1.6 Version Accounting]
Press the Spin button once to get to [1.6.1 Version Accounting]
Press the Spin button once, then press the Change/Service button 3 times to scroll backwards thru the pages to get to PV 16 Sound...the Simm sound card DSV will be the number shown on the right-hand side of your VFD display.
In the photo below, my machine does NOT have a DSV sound SIMM card installed, so on the blue VFD, it shows "N/A"....which means "Not Available".
If you make a mistake, simply press the Max Bet button to exit out.
To re-enter the Accounting pages, start from the top by pressing the little white Test button on the MPU cage, once momentarily to get in.