dosbox

scale window

https://superuser.com/questions/1425244/increase-dosbox-windowed-size run "DOSBox 0.74 Options.bat" the script starts notepad with configuration file: here change

windowresolution=1600x800
output=ddraw

preferences file on windows

C:\Users\USERNAME\AppData\Local\DOSBox

edit autoexec.bat

see autoexec section in subl ~/Library/Preferences/DOSBox\ 0.74-3-3\ Preferences

mount

intro mount
mount c ~/c

imgmount

imgmount b ~/c/disk1.img -t floppy
imgmount -u b   # unmount