US 4,853,844 AGranted

Data processing system adaptable to using equivalent integrated circuits

AssigneeDiesel Kiki Co., Ltd.

InventorHiromi Kono

Life of this patent

Estimating the term…

Loading patent…

Abstract

A data processing system which has a plurality of integrated circuit devices and which carries out a predetermined data processing operation in accordance with a stored program, has a discriminator for discriminating which of integrated circuit devices from amongst a plurality of predetermined types is presently being used for at least one functional device in the system, and an executing unit responsive to the output of the discriminator for executing a predetermined data processing in accordance with a program which is arranged so as to perform the predetermined data processing operation no matter which type of integrated circuit device is selected from a predetermined range of selectable functional devices, so that data processing in accordance with the selected type of integrated circuit device at that time can be performed without changing the program, thereby allowing a wide range of replacement devices.

A method of controlling a data processing system having at least one microprocessor for processing input data in accordance with a stored program, in which said microprocessor is selected from a predetermined plurality of microprocessors which have identical pin assignments and use identical machine language, but not identical address assignments of respective registers, said method comprising steps of:

storing in a memory means a discriminating program and a data processing program, said discriminating program to be executed normally by any selected microprocessor and being able to discriminate on the basis of the difference in the address assignments of the respective registers from among the predetermined plurality of microprocessors which type of microprocessor has been selected and used, said data processing program providing the correct execution of a prescribed data processing operation by the selected microprocessor when only information concerning the type of the microprocessor in use is provided;
executing said discriminating program during initialization of the system by the selected microprocessor to discriminate what type of microprocessor is used in the data processing system, said executing step including:
a. writing a prescribed data to a predetermined address of the register of the selected microprocessor;
b. reading out the data stored in the address to which the prescribed data is written by said writing step;
and
c. comparing the prescribed data with the data read out in said reading step, thereby discriminating the type of microprocessor the selected microprocessor is in accordance with the result of said comparing step;
producing discrimination data indicating the type of microprocessor which is currently in use in response to the result of the discrimination obtained by the execution of the discriminating program;
and
controlling the execution of said data processing program in response to the discrimination data so as to adapt the data processing program to the type of microprocessor in use at that time.

6 more elements

Facts

Application

06/885,883Filed 15 Jul 1986

Priority

JP 60-15704818 Jul 1985

Granted

1 Aug 1989

Term ends

Not estimatedThe source records don’t support an estimate.

Classification7 codes

G06F 13/387
Using universal interface adapter: for adaptation of different data processing systems to different peripheral devices, e.g. protocol converters…
G05B 19/408
Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to…
G05B 2219/33108
Director till display: exchange of type of controller is easy, before operation, adapt control to type
Y02P 90/02
Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation: total factory control, e.g. smart factories,…

Abstract

Claims4