Ok, if the guy you got the PC from had the SB16 installed with these programs for you, then I guess it matches the hardware inside the PC.
(To know the model, you would have to open the PC to read the card model on the SB16, which is not required, if it works ok.)
The thing I was after was to verify the settings, since the original Soundblaster models could not be configured by software only, but used jumpers on the card to select things like IRQ, DMA and I/O Port ranges, which has to be checked against al other cards in the old PC:s, so the SB16 will not be in conflict with other cards using the same resources.
When you used the card here, in AUTOEXEC.BAT you set environment parameters describing the SB16 settings using the SET SOUND, SET BLASTER and SET MIDI lines, and then loaded two programs DIAGNOSE and MIXERSET to configure the board; this should only be needed once, but you loaded them twice, both in low memory (below 640kB) using the first two lines, and then a second time with LOADHIGH or LH command, which loads them between 640kB and 1MB, provided there is free space there. I think one time configuration is enough, so you could put REM (remark) before those two LH DIAGNOSE and LH MIXERSET lines, both are not needed. (I don't think they are programs that stay in memory after initialization, otherwise it could be a point of using the LH lines instead of the first two lines)
Note, you can use the DIAGNOSE and MIXERSET commands interactively too, from the command line (omit the parameters used in autoexec.bat) to see what they do (not much).
Here is a website describing a lot of settings for the SB cards in general.
https://retronn.de/imports/soundblaster ... guide.html
I don't have a SB16 setup nowadays; I had one long ago, but I have to dig it up to check; the MIDI line could refer to a synthesizer on the AWE32 card or the Waveblaster addon card for the SB16, not sure if it did anything on a vanilla card, but your SB16 could have a Waveblaster or similar perhaps.
You asked in a PM about the HIMEM & EMM386 function; it provides a few extra ways to access memory, in your case it provides the memory between 640kB to 1MB for loading resident programs and drivers into, like you use with the DEVICEHIGH (in config.sys)and LOADHIGH/LH (in autoexec.bat) commands.
Usually this is helpful to have more free memory below 640 kB for the main program you intent to run, like the game we discuss.
Here is a more extensive description (maybe too much so) of this memory manager program:
http://www.vfrazee.com/ms-dos/6.22/help/emm386.exe.htm
If you want to try without it, just add a REM in front of the EMM386 line in config.sys and see what happens; without HIMEM you will fail loading the DEVICEHIGH drivers, and the LH commands too will not work. Just using DEVICE instead of DEVICEHIGH will get the drivers loaded, but at cost of lower memory available below 640kB for the main program FATMAN.
The FATMAN game should work with 512kB ram according to Mobygames tech specs, as long as MIDI is not used. It could be interesting to see if ithe game works at all, since it was so old as to *possibly* not handle memory above 640kB or above 1MB; you have 8MB in total.
(I have not tried the game myself, so I may look for that later if I can get one of my older PC:s running again. Nowadays I prefer DOSBox for these oldies.)
