SU638962A1 - Microprogramme-control device - Google Patents

Description

launcher-stop connected to the corresponding input regnstra micro-commands

The drawing is a functional diagram of the microprogram of a multiplier device.

It contains a register of 1 commands., A decoder of 2 operations, a driver of 3 micro-command addresses, a decoder of 4 micro-command addresses, microprogram storage unit 5, generator b, start-stop node 7, 8 command counter, command block 9, register 10 of micro-commands, address registers 11 transitions J Koivff.iyTaTop 12, decoder 13 transitions, conversion counter 14, input 15 device characteristics, group of elements AND 16, input 17 of the device, zone 18 of addresses of transitions and zone 19 of microcommands with firmware 20 of the storage unit 5, node 21 sampling microprogram -1m node 22 select orcs of microinstructions MHKponporpaN.ffl3j, register 23 addresses of microprograms-1Y, counter 24 addresses of microinstructions. microprograms, additional element I 25 and element NO 26,

Mikroppregga a new control device operates as follows.

In the last cycle of the operation on the register output of 10 micro-instructions, control signals are generated that disconnect the start-stop unit 7 and the Connecting output -I of the command register. In this case, one of the traps of the decoder of 2 operations excites the corresponding address bus of the transition zone 18 of the storage device 5 with a word containing all the addresses of the microprogram MMj used in the operation and a number of features, such as selecting a command, selecting an operand, adding the address

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the word is rewritten into the registers 11 of the transition addresses, the control signals of this word reset the counter 14 of the transitions and the counter 24 adpeCci microcommands microprograms / Y of the former 3 microcommand addresses, and also., the words of this word are partially copied into the register 10 microcommands and stored During the operation, in this case, the inputs of register 23 of the microprogram addresses of the driver 3 addresses of microinstructions using the switch 12 controlled by the decoder 13 of the transitions connect the outputs of register 11 of the address of the transition the initial address of the firmware of the operand, by which the first microcommand danu microprogram w is written into the microcommand register 10 on the corresponding microprogram 20 of the zone 19 microcommands of the storage unit 5. At the same time, the start-stop node 7 is connected, and the microcomputer addresses of the microinstructions of the microprogramming address 3 of the microcommands are sent to the input of the counter 24 of the microcommand generator 6 J, which leads to a consecutive sampling of Bcej {microinstructions of this microprogram 20 from the area of microinstructions 19 of the storage unit 5, rewritten into a register of 10 microinstructions. In the last micro-command of this microprogram, a reset pulse is generated from the counter 24 of the micro-commands of the micro-program of the microinstructor 3 addresses of the micro-commands, the blocking pulse of the start-stop unit 7 and the pulse that converts the transition counter 14 to the next order. At the same time, the inputs of register 23 of the microprogram addresses microprogrammer 3 addresses of micro-instructions using 1 switch 12 controlled by the decoder of 13 transitions connect the outputs of register 11 of the addresses of transitions with the initial address of the microprogram / ge, for example, the addition from which the 1E micro-commands of the memorizing command from the corresponding microprogram 20 of zone 1E unit 5 into the register 10 micro-instructions are sequentially rewritten to execute all the micro-commands of this microprogram, i.e. The device works the same as when executing the previous firmware.

Multiplication, division, and other cyclic operations are performed as add and shift microprograms with a return to the address recorded in the register of 10 microcommands that loop over as many cycles as is required for the signer to finish the operation, only after that, the firmware will be able to proceed to the next order of firmware,

In such firmware control devices, the area of micro-commands of the storage unit is divided into microprograms of elementary operations such as address formation, command selection, operand selection, addition, shift, etc., which will be no more than 15, and the number of micro-commands in each firmware no more than 4, which leads to the need to split the decryptor addresses of micro-instructions into the microprogram sampling node and the micro-commands microprogram selection node, and the address driver of the main commands - into the microprogram address register and the micrometer address counter of the microprogram, as well as the need to introduce a series of new links, which allows to exclude a multi-bit register of the positional transfer address with AND and OR elements by introducing a one-bit connection of the transition counter with the output of the micro-command register, reduce the size of the register of the transition address and their number, since the number of microprograms of elementary operations is much less than the number of microcogs ind differing from each other by controlling the signals, and also facilitates the execution