0
To identify the phases of o 3-phase system, we give to each of them a name, such as A-B-C, or R-S-T, or R-Y-B (in this case, red-yellow-blue, if we assign a color to each phase, for easy visual identificantion).
Answer'R-S-T' was a German standard used to identify each of the three lines (not 'phases', as indicated in the original answer) of a three-phase system. Other countries use different standards, including A-B-C, 1-2-3, red-yellow-blue, and blue-black-grey.
Wiki User
∙ 10y ago
Wiki User
∙ 10y agoThe letters, R-S-T, were used in Germany to represent each line, or line terminal, of a three-phase system. Other countries used different letters, letter/number combinations, or colours to do the same thing. Germany now uses the EU standard, which consists of the colours brown-black-grey.
The sequence of these letters or colours also indicates the normal phase sequence of the three-phase system.
Wiki User
∙ 10y agoThe letters, R-S-T, are used to identify each line of a three-phase system. The letters themselves don't stand for anything. These letters are used in Germany; other countries use different letters (A-B-C, R-Y-B, etc.) or numbers (1-2-3) or colours (brown-black-grey, etc.).
Add your answer:
Earn +20 pts
What is the interrupt number in 8085 microprocessor and how to find interrupt's vector address?
The 8085 has five interrupts, INTR, RST5.5, RST6.5, RST7.5, and TRAP. It also has eight software interrupts, RST0, RST1, ..., RST7. The INTR interrupt requires a hardware response that is an opcode. Usually, the opcode is either a CALL instruction, in which case the interrupt vector can go anywhere in memory, or it is an RST instruction, in which case the vector is based on a table in low memory. In the case of RST instructions, either directly or via INTR, or the RSTx.5 interrupts, you simply multiply the interrupt number by 8 to get the vector address. The following table presents the vector addresses for all possible interrupts... RST 0 - 00H RST 1 - 08H RST 2 - 10H RST 3 - 18H RST 4 - 20H TRAP - 24H RST 5 - 28H RST5.5 - 2CH RST 6 - 30H RST 6.5 - 34H RST 7 - 38H RST 7.5 - 3CH
Describe RST 5.5 interrupts in 8085 microprocessor with examples?
RST 5.5 is level triggered interrupt & maskable also. it can be masked by using SIM intrruction. Vector address of the RST 5.5 interrupt is 002Ch
What is the lowest priority interrupt in the 8085 microprocessor?
The lowest priority interrupt in the 8085 microprocessor is INTR, unless you also consider the software interrupts, RST 0 through RST 7, which are even lower.
What is the meaning of maskable hardware interrupt?
A maskable hardware interrupt is one that can be disabled, or masked, by instructions in the CPU. In the 8085, all interupts except TRAP and (software) RST N can be masked by disabling interrupts, and RST7.5, RST6.5, and RST5.5 can be individually masked with the SIM (Set Interrupt Mask) instruction. In general, you leave interrupts disabled until one instruction before returning. In the case of the RST*.5 interrupts, you can mask it during interrupt processing and then enable interrupts, allowing other levels to interrupt you again. At the conclusion of the interrupt routine, you would disable interrupts, restore the mask, enable interrupts, and return. If you use this method, you can choose the nesting priority as desired. You determine what mask to set using the RIM (Read Interrupt Mask) instruction and then do bit manipulation before using SIM.
What address does an 8085 start at and what address do the interrupts go to?
At reset, the 8085 starts at location 0000H. The INTR interrupt goes wherever the interrupt opcode says to go. The TRAP interrupt goes to 0024H. The RST5.5, RST6.5, and RST7.5 interrupts go to 002CH, 0034H, and 003CH respectively. The RST X interrupts goto 0000H plus 10H times X, i.e. 0000H, 0008H, 0010H, ..., 0038H.
What does 5.5 mean in RST 5.5 interrupt of 8085 microprocessor?
The 5.5 in RST 5.5 means that the interrupt vector is located between RST 5 and RST 6.
Why rst x.1 rst x.2 rst x.3 not in 8085 why only rstx.5 is used?
Because that's how Intel designed the 8085. In addition to the 8080 type interrupt on the INTR pin, Intel chose, for the 8085, to implement four new interrupts, RST 5.5, RST 6.5, RST 7.5, and TRAP, each of which would not require the interrupting device to provide a vector. The naming convention of x.5 was simply in recognition that Intel placed the implicit vector halfway between two other RST vectors. As an example, RST 6.5 is halfway between RST 6 and RST 7. Since RST 6 and RST 5 are eight bytes away from each other, placing RST 6.5 in between would place a limit of four bytes, and four bytes is enough to place a three byte JMP instruction. The decimal and hex addresses of all of the vectors are... RST 0 - 0 - 00H RST 1 - 8 - 08H RST 2 - 16 - 10H RST 3 - 24 - 18H RST 4 - 32 - 20H TRAP - 36 - 24H RST 5 - 40 - 28H RST 5.5 - 44 - 2CH RST 6 - 48 - 30H RST 6.5 - 52 - 34H RST 7 - 56 - 38H RST 7.5 - 60 - 3CH
What is RST in 8085?
RST OF TRAP is 24h(hexadecimail) address.
Why specific name of interrupt RST?
Because this mnemonic stands for RESTART (RST).
In RST RS 15 RT 12 and ST 17. Which angle of RST has the smallest measure?
It is angle RST.
In what year did Rosetta Stone - RST - have its IPO?
Rosetta Stone (RST)had its IPO in 2009.
what- for RST?
false
RST is dilated?
answer
What is the interrupt number in 8085 microprocessor and how to find interrupt's vector address?
The 8085 has five interrupts, INTR, RST5.5, RST6.5, RST7.5, and TRAP. It also has eight software interrupts, RST0, RST1, ..., RST7. The INTR interrupt requires a hardware response that is an opcode. Usually, the opcode is either a CALL instruction, in which case the interrupt vector can go anywhere in memory, or it is an RST instruction, in which case the vector is based on a table in low memory. In the case of RST instructions, either directly or via INTR, or the RSTx.5 interrupts, you simply multiply the interrupt number by 8 to get the vector address. The following table presents the vector addresses for all possible interrupts... RST 0 - 00H RST 1 - 08H RST 2 - 10H RST 3 - 18H RST 4 - 20H TRAP - 24H RST 5 - 28H RST5.5 - 2CH RST 6 - 30H RST 6.5 - 34H RST 7 - 38H RST 7.5 - 3CH
What does rst in 8085 software interrupt stand for?
RST is simply the opcode chosen to represent the Restart instruction.
What does 6.5 signify in rst 6.5 of 8085 microprocessor?
The name, RST6.5, was chosen because the interrupt vector lies halfway between RST 6 and RST 7, specifically at address 0034H.
What is measure of rst?
44
