RST 20H, DEFW $2E0C
IN: BHL = pointer to breakpointOUT: Fc=0, success and IX=handle Fc=1, failure and A=error RC_Fail, error during removal RC_Eof, cannot find debug handle RC_Use, breakpoint is runningRegisters affected after return:
    A.BCDEHL/..IY same    .F....../IX.. different
    A.
BCDEHL/..IY same
    .F
....../IX.. different
DC_Dis, DisassembleDC_Dbg, Enter debugger