IN: A = HT_RES ($01), reset hardware timer HL = pointer to a 5 bytes buffer A = HT_RD ($02), read hardware timer A = HT_UPT ($03), read uptime OUT: A(in) = HT_RES ($01) - A(in) = HT_RD ($02) BHL = pointer to a 11 bytes time system buffer A = HT_UPT ($03) BCD = minutes, E = seconds since latest hard reset Registers changed after return: A.BCDEHL/IXIY same .F....../.... different IN: A = HT_MDT ($03), read monthy/date/time address OUT: Fc = 0 BHL = month, date, time address Registers changed after return: ...CDE../IXIY same AFB...HL/.... different |
Internal operating system usage.