📝 Analog to Digital Converter in 8085 Microprocessor

Q1. What is the hexadecimal address of the Mode Set Register for the 8257 DMA controller in the example provided?

💡 Difficulty: easy | ✅ Correct: B

Q2. To transfer 1024 (0x400) bytes from memory address 0x2000 to a peripheral using channel 2, which of the following register‑loading sequences is correct?

💡 Difficulty: medium | ✅ Correct: A

Q3. Which code snippet correctly initializes the 8257 to move 512 bytes from memory location 0x3000 to a floppy using channel 0, given Mode Set Register at 0x28, DMA address register at 0x20, and Terminal Count register at 0x21?

💡 Difficulty: hard | ✅ Correct: C