Dosbox-x is cross-platform including supports 32-bit and 64-bit arm cpu, dosbox-x also has several platform-dependent features, and for android it is possible to remove unsupported features.
dosbox-x devs try to make an android versionhttps://github.com/joncampbell123/dosbox-x/issues/959
Yes, I totally agree. I wish dosbox-x was available on Android, or as a magic dosbox base.
windows 9x in dosbox is not officially supported, but other dosbox builds do support windows 9x (e.g. dosbox-x, dosbox daum)