MAME trying to launch two disks but launchbox is only sending 1

[mcfilmmakers]

I'm trying to get an IBM 5170 game to launch through launchbox but am having issues.

The game requires a harddisk, flop1 and flop2.

I can do this with no issue in IBM 5150 with the following commandline:

ibm5150 -skip_gameinfo -harddisk1 "F:\Launchbox\Emulators\MAME\ibm5150hd.chd" -flop1 "F:\Launchbox\Emulators\MAME\software\ibm5150\msdos33.zip" -flop2    

However, the same commandline in 5170 doesn't work:

ibm5170 -skip_gameinfo -harddisk1 "F:\Launchbox\Emulators\MAME\ibm5150hd.chd" -flop1 "F:\Launchbox\Emulators\MAME\software\ibm5170\msdos33s.zip" -flop2    

The above line will not open MAME at all. I have to modify it to this:

ibm5170 -skip_gameinfo -harddisk1 "F:\Launchbox\Emulators\MAME\ibm5150hd.chd" -flop1 "F:\Launchbox\Emulators\MAME\software\ibm5170\msdos33s.zip" -flop2 "F:\Launchbox\Emulators\MAME\software\ibm5150\4dboxing.zip"    

At this point, Launchbox opens MAME with the correct harddisk but the game is set in both floppy drives. I want the msdos disk in drive 1 and the game in drive 2.

What make it all the more perplexing is that it loads perfectly fine in Negatron (I use it to create the harddisk). Negatron shows me this commandline:

ibm5170 -bios rev1 -ramsize 1703936 -isa1 ega -isa2 fdc -isa2:fdc:fdc:0 35hd -isa2:fdc:fdc:1 35hd -isa3 comat -isa3:comat:serport0 logitech_mouse -isa3:comat:serport1 "" -isa4 ide -isa4:ide:ide:0 hdd -isa4:ide:ide:1 "" -kbd pcat -floppydisk1 msdos33s -floppydisk2 4dboxing -harddisk "F:\Launchbox\Emulators\MAME\ibm5150hd.chd"

Even with that exact commandline in launchbox, it still puts the game in both floppy drives.

How can I resolve this?

Edited January 17, 2021 by mcfilmmakers

[JoeViking245]

What does your Negatron.ini file look like?  Is it using NegaMAME or regular MAME?