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In the context of the 8085 microprocessor, a "mask" refers to a specific bit pattern used to enable or disable certain bits in a data byte during operations like masking or bit manipulation. By applying a mask using bitwise operations (AND, OR, etc.), programmers can isolate or modify specific bits in a register or memory location without affecting others. This is particularly useful for tasks such as setting or clearing flags, managing control registers, or handling input/output operations.
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How can you trap mask in 8085 microprocessor?
The TRAP instruction in the 8085 is NONMASKABLE, which means it cannot be masked, i.e. it cannot be disabled. The only way to mask or disable TRAP is with external hardware, such as an I/O pin and an AND gate.
What is rim in microprocessor 8085?
RIM is Read Interrupt Mask. It is used to access the interrupt mask register, which contains the status of the three interrupt masks and the serial input data pin.
How can mask or unmask the interrupts in 8085?
DI = Disable all interrupts (except TRAP) EI = Enable all interrupts Also, SIM can selectively mask RST5.5, RST6.5, and RST7.5.
what is the meaning of Mask?
it is the method of making a mask :>
What is the meaning of mask making?
it is the method of making a mask :>
What is the meaning of the term 8085 in microprocessor8085?
The designation 8085 was given by Intel for an updated version of the 8080. The 8085 multiplexed the address bus, freeing up some pins, and Intel included newer functionality. The specific reason for the 5, in 8085, was to indicate that the 8085 operated on a single +5V power supply, unlike the 8080, which needed three power supplies, +5V, -5V, and +12V.
Can 8085 CPU replace 8086 CPU?
No. The 8086 has instructions not present in the 8085. The 8086 was marketed as "source compatible" with the 8085, meaning that there was a translator program which could convert assembly language code for the 8085 into assembly language code for the 8086. However, this does not mean that the compiled 8086 assembly code would then run on an 8085; among other things, the 8086 was a true 16-bit processor, as opposed to the 8085 which was an 8-bit processor that supported a few 16-bit operations.
What is sim in 8085?
The SIM instruction in the 8085 is Set Interrupt Mask. You can use it to set and clear the three interrupt masks for RST7.5, RST6.5, and RST5.5, as well as to set or clear the SOD (Serial Output Data) pin. You can also reset the pending RST7.5 interrupt, if desired.
Why the name 8085 Why the name 8085 for microprocessor?
8085 is a microprocessor designed by Intel
Why the 16 bit 8085 microprocessor is not possible?
The 8085 was replaced with the 8086/8088. As such, there is no 16 bit version of the 8085.
Difference between 8080 and 8085?
The 8085 has a single +5V power supplyThe 8085 has a multiplexed low order address busThe 8085 has extra single pin interrupts, TRAP, RST7.5, RST6.5, and RST5.5The 8085 has serial I/O pins SID and SODThe 8085 has maskable interrupts and the RIM/SIM instructionThe 8085 includes the functionality of the 8224 clock genereator and 8228 system controllerThe 8085 added several 16 bit operations
In 8085A microprocessor What is the meaning of A here?
Maximal clock speed. 8085: ? 8085A: 3 MHz 8085AH: 5 MHZ
