keybinds

Alt+Enter: Switch fullscreen
Alt+Pause: Pause emulation
Ctrl+F1: Key mapper
Ctrl+F10: Release mouse
Ctrl+F11: Decrease DOSBox cycles (slows down the emulation)
Ctrl+F12: Increase DOSBox cycles (speeds up the emulation)
https://www.dosbox.com/wiki/Special_Keys

debugger

Alt+Pause: Break on current instruction
F5: Run
F9: Set/Remove breakpoint
F10/F11: Step over / trace into instruction
Ctrl+F10: Release mouse
Alt+D/E/S/X/B: Set data view to DS:SI/ES:DI/SS:SP/DS:DX/ES:BX

debug

Guide to the DOSBox debugger - VOGONS

~/opt/dosbox-0_74_3/src/dosbox -conf dosbox.conf

debug main.exe

f5 = resume from break
alt-pause = break at current instruction
- Mapper event: hand_debugger

heavylog
log 20000
# read key press
# https://en.wikipedia.org/wiki/INT_16H
bpint 16 10

case studies

https://cloakedthargoid.wordpress.com/hacking-with-dosbox-debugger/