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Register parameters
RST 20H, DEFW $0A0F
IN: A = flags
A0 = type (0: step debug entry, 1: break point) [NOT IMPLEMENTED]
A6 = call instruction (0: false, 1:true) [RESERVED]
A7 = screen (0: user screen, 1: debug screen) [RESERVED]
BHL = pointer to debug entry or break point
OUT: Fc=0, success and IX=handle
Fc=1, failure and A=error
RC_Hand, cannot allocate a debug handle
RC_Wp, cannot debug in ROM
Registers affected after return: A.BCDEHL/IXIY same
.F....../.... different
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Notes
- Internal operating system usage
- API call implemented in OZ 5.0
DZ_Dis, Disassemble
DZ_Dbg, Enter debugger