): Pins 12 to 19 carry the least significant 8 bits of memory address during the first clock cycle ( T1cap T sub 1
For further study, you can find comprehensive slide decks on platforms like SlideShare or academic repositories like NPTEL . Microprocessor 8085 complete | PPTX - Slideshare
The 8085 is an 8-bit microprocessor developed by Intel®, known for its simplicity and efficiency. It's a cornerstone in computing, microprocessor 8085 ppt by gaonkar new
The instruction specifies a register pair (usually HL) that holds the actual target memory address (e.g., MOV A, M ).
During the Opcode Fetch cycle, the ALE signal goes high during the first T-state ( T1cap T sub 1 ): Pins 12 to 19 carry the least
MOV, MVI, LXI, LDA, STA, etc. (move data between registers, memory, and IO). Arithmetic Group: ADD, SUB, INR, DCR, DAA, etc. Logical Group: ANA, ORA, XRA, CMP, etc. Branching Group: JMP, JZ, JC, CALL, RET. Machine Control Group: HLT, NOP, SIM, RIM. Key Addressing Modes Immediate: Data is directly provided in the instruction ( MVIcap M cap V cap I Register: Data is moved between registers ( MOVcap M cap O cap V Direct: Address of data is given in the instruction ( LDAcap L cap D cap A 2000H2000 cap H Indirect: Register pair holds the address of data ( MOVcap M cap O cap V 5. 8085 Interrupts and Serial I/O
TRAP (highest priority, non-maskable), RST 7.5, RST 6.5, RST 5.5, and INTR (lowest priority, maskable). During the Opcode Fetch cycle, the ALE signal
," your content should focus on the 6th Edition (the most current "new" version). This edition is widely used for academic and professional study. Core Presentation Content
) to lock the lower address bits into an external latch (like an 74LS373). By T2cap T sub 2
Writes data bytes to a specified memory address.
Binary addition, subtraction, increment, and decrement.