Int 1Ah, 00h Read System-Timer Time Counter all
Int 1Ah, 01h Set System-Timer Time Counter all
Int 1Ah, 02h Read Real-Time Clock Time many
Int 1Ah, 03h Set Real-Time Clock Time many
Int 1Ah, 04h Read Real-Time Clock Date many
Int 1Ah, 05h Set Real-Time Clock Date many
Int 1Ah, 06h Set Real-Time Clock Alarm many
Int 1Ah, 07h Reset Real-Time Clock Alarm many
Int 1Ah, 08h Set Clock-Activated Power-On Mode Convertible
Int 1Ah, 09h Read Clock Alarm Time and Status Convertible
Int 1Ah, 0Ah Read System-Timer Day Counter some XTs
Int 1Ah, 0Bh Set System-Timer Day Counter some XTs
Int 1Ah, 80h Set Up Sound Multiplexer PCjr