Debugger

jsbeeb features a simple debugger.

Bring up the debugger with ctrl-HOME.

Once in the debugger the following keys are active:

• g - resume normal running
• n - single step to the next instruction
• m - step "over" that is, single step but don't follow JSRs
• o - step "out" that is, run until an RTS
• j / k - scroll up and down in the disassembler view
• u / i - scroll up and down in the memory view. Hold shift to scroll faster
• b - go "back" in the disassembler stack. clicking the blue highlighted addresses takes you to the destination of JSR etc. 'b' pops back to where you were disassembling before.

Breakpoints are a little trickier currently. They're supported, but need work; you need to enter them in the Javascript console.