JPS55134448A - Microprogram execution stopping unit - Google Patents

Microprogram execution stopping unit

Info

Publication number
JPS55134448A
JPS55134448A JP4066379A JP4066379A JPS55134448A JP S55134448 A JPS55134448 A JP S55134448A JP 4066379 A JP4066379 A JP 4066379A JP 4066379 A JP4066379 A JP 4066379A JP S55134448 A JPS55134448 A JP S55134448A
Authority
JP
Japan
Prior art keywords
stop
address
microprogram
subroutine
circuit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP4066379A
Other languages
Japanese (ja)
Inventor
Kozo Yamano
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP4066379A priority Critical patent/JPS55134448A/en
Publication of JPS55134448A publication Critical patent/JPS55134448A/en
Pending legal-status Critical Current

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  • Debugging And Monitoring (AREA)

Abstract

PURPOSE: To facilitate stopping of an arbitrary program address in a subroutine by indicating execution stop on the basis of the comparison result of the given first address comparison means and the comparison result of the second comparison means in the stop indication mode.
CONSTITUTION: The output of microprogram execution address register 1 where addresses of the executing microprogram are stored is applied to subroutine call source address comparison circuit 4 and stop address comparison circuit 5, and further, outputs of subroutine call source address register 2 and microprogram stop designation address register 3 are supplied to circuits 4 and 5 respectively. When execution is transferred from the subroutine to the main routine, subroutine call source address coincidence indication FF6 is set by the comparison result of circuit 4, and dependently upon set or reset of microprogram address stop FF7 in the subroutine, execution stop indication circuit 8 is controlled by the output of FF6 or circuit 5, thus indicating stop.
COPYRIGHT: (C)1980,JPO&Japio
JP4066379A 1979-04-04 1979-04-04 Microprogram execution stopping unit Pending JPS55134448A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4066379A JPS55134448A (en) 1979-04-04 1979-04-04 Microprogram execution stopping unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4066379A JPS55134448A (en) 1979-04-04 1979-04-04 Microprogram execution stopping unit

Publications (1)

Publication Number Publication Date
JPS55134448A true JPS55134448A (en) 1980-10-20

Family

ID=12586762

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4066379A Pending JPS55134448A (en) 1979-04-04 1979-04-04 Microprogram execution stopping unit

Country Status (1)

Country Link
JP (1) JPS55134448A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6314249A (en) * 1986-07-04 1988-01-21 Nec Corp Device for halting instruction execution
JPH07191876A (en) * 1993-12-27 1995-07-28 Nec Corp Program testing device and using method for the same

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5244133A (en) * 1975-10-06 1977-04-06 Nec Corp Microprogram control system
JPS53103339A (en) * 1977-02-21 1978-09-08 Fujitsu Ltd Composite program comparison circuit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5244133A (en) * 1975-10-06 1977-04-06 Nec Corp Microprogram control system
JPS53103339A (en) * 1977-02-21 1978-09-08 Fujitsu Ltd Composite program comparison circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6314249A (en) * 1986-07-04 1988-01-21 Nec Corp Device for halting instruction execution
JPH07191876A (en) * 1993-12-27 1995-07-28 Nec Corp Program testing device and using method for the same

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