Explore the CMOS and RTC: Read System Clock with BIOS INT 0x1A

Write a program to read the system clock using BIOS INT 0x1A.

Requirements:

• Use inline assembly to call BIOS INT 0x1A
• Read time using AH=0x02 (hours, minutes, seconds in BCD)
• Read date using AH=0x04 (century, year, month, day in BCD)
• Convert BCD values to decimal
• Display the current date and time
• Handle BCD conversion properly (59 BCD = 59 decimal, not 89)
• Print in human-readable format
• Also implement direct CMOS reading for comparison