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The four ways to clear the accumulator in the 8085 are...XRA AMVI A,0SUB ALDA {address of a zero}Answered By:KUNAL SINHARead more: What_are_the_4_ways_to_clear_the_accumulator_in_8085_microprocessors
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write it in 8085
What is the different between LXI and LHLD in 8085?LHLD 2050 Means..copy content of 2050 and 2051 to HL pairif2050 -> 90H2051->5AHLHLD 2050 implies..L -> 90HH -> 5AHLXI means..Load Register Pair with Immediate data.. 16bit dataLXI B ,2050HLoads BC pair with value 2050HB-> 20HC-> 50HIts similar to 2 MVI instructionieMVI H,20HMVI L,50Hwhich eventually implies..HL -> 2050Hthe advantage of LXI over MVI is that LXI is 3 byte and requires 10T states.Two MVI instruction is 4Byte and require 14Tstates...
RST 5.5 is an interrupt request pin (pin 9) on the 8085. It is sampled, along with other interrupt requests, one clock cycle before ALE on the falling edge of CLK. When enabled, and having priority, it causes an interrupt vector sequence using the RST 5.5 instruction, going to location 002CH.