$ dosemu -dumb
shared memfd open() failed: Function not implemented
shared memfd open() failed: Function not implemented
ALSA lib pcm_hw.c:1713:(_snd_pcm_hw_open) Invalid value for card
couldn't open play stream: No such file or directory
ERROR: alsa_midi (ALSA lib): seq_hw.c:466:(snd_seq_hw_open) : No such file or directory open /dev/snd/seq failed
dosemu2 2.0pre8-20190126-884-gaaad6f8b
Configured: 2019-01-26 16:03:11 +0100
Please test against a recent version before reporting bugs and problems.
Get the latest code at http://stsp.github.io/dosemu2
Submit Bugs via https://github.com/stsp/dosemu2/issues
Ask for help in mail list: linux-msdos@vger.kernel.org

In boot_initcode
Switched to init stack
Relocated enough
Loader past RPL detection
No EBDA detected
Layout found
es=0040 ds=9B55 ss=0FD8 cs=0FD8 sp=1432 bp=143E di=9000
si=9000 dx=95FB cx=8E81 bx=9DE5 ax=0000 fl=3246 ip=03FD
Memory top relocated
Code segment relocated
Data segment relocated
auxbuff initialised

New boot_initcode done
In boot loader; press any key
d4pauseforkey received ax=1E61
Common initialisation, determining processor type now
Determining processor type
Found 186+ processor
Found 286+ processor
Found 386+ processor
Found 486+ processor
Found processor with CPUID support
Executing CPUID 0
CPUID 0 executed
Executing CPUID 1
CPUID 1 executed
Determining floating-point unit
386-related patches applied, boot initialisation proceeding
Jumping to final boot initialisation code
~-a
0060:0000 mov cx, 10
0060:0003 mov si, 0
0060:0006 rep lodsb
0060:0008 nop
0060:0009 int3
0060:000A
~-r
AX=0000 BX=0000 CX=0000 DX=0000 SP=FFFE BP=0000 SI=0000 DI=0000
DS=0060 ES=0060 SS=0060 CS=0060 IP=0000 NV UP EI PL ZR NA PE NC
0060:0000 B91000            mov     cx, 0010
~-t
AX=0000 BX=0000 CX=0010 DX=0000 SP=FFFE BP=0000 SI=0000 DI=0000
DS=0060 ES=0060 SS=0060 CS=0060 IP=0003 NV UP EI PL ZR NA PE NC
0060:0003 BE0000            mov     si, 0000
~-
AX=0000 BX=0000 CX=0010 DX=0000 SP=FFFE BP=0000 SI=0000 DI=0000
DS=0060 ES=0060 SS=0060 CS=0060 IP=0006 NV UP EI PL ZR NA PE NC
0060:0006 F3AC              rep     lodsb
~-
AX=00B9 BX=0000 CX=000F DX=0000 SP=FFFE BP=0000 SI=0001 DI=0000
DS=0060 ES=0060 SS=0060 CS=0060 IP=0006 NV UP EI PL ZR NA PE NC
0060:0006 F3AC              rep     lodsb
~-tp
ERROR: CPU-EMU: Zero-len code node?
                                   AX=0000 BX=0000 CX=0000 DX=0000 SP=FFFE BP=0000 SI=0011 DI=0000
DS=0060 ES=0060 SS=0060 CS=0060 IP=0008 NV UP EI PL ZR NA PE NC
0060:0008 90                nop
~-?build
Debugged lDebug (2019-06-09)
Source Control Revision ID: hg 12e6cf2820c6
~-boot quit
In bootcmd
$