IN: L = reason code Other register parameters depend on reason code OUT: Depends on reason code, see below. |
Internal operating system usage. This call is used to allocate all I/O type handles. The handle type and structure is documented in handle.def file.
IN: A = FN_AH ($01) B = handle type B = 0, does not allocate a handle properly - the next handle is given the SAME number OUT, if successful: Fc = 0, IX = handle OUT, if failed: Fc = 1, A = RC_ROOM Registers changed after return: ..BCDEHL/..IY same AF....../IX.. different |
IN: A = FN_VH ($02) B = handle type IX = handle OUT, if successful: Fc = 0 OUT, if failed Fc = 1, A = RC_ROOM Registers changed after return: ..BCDEHL/IXIY same AF....../.... different |
IN: A = FN_FH ($03) B = handle type IX = handle OUT, if successful: Fc = 0, IX = 0 OUT, if failed: Fc = 1, A = RC_HAND Registers changed after return: ..BCDEHL/..IY same AF....../IX.. different |
IN: A = FN_GH ($04) IX = first handle to test, 0 to begin with top handle B = handle type C = dyn id, 0 to bypass the check OUT, if successful: Fc = 0, IX = handle OUT, if failed: Fc = 1, A = RC_EOF Registers changed after return: ..BCDEHL/..IY same AF....../IX.. different |
IN: A = FN_NH ($05) IX = handle to test OUT, if successful: Fc = 0, IX = handle OUT, if failed: Fc = 1, A = RC_EOF Registers changed after return: ..BCDEHL/..IY same AF....../IX.. different |