EP0271910A2
Expired / Lapsed
EP
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One-chip microprocessor
Assignee: Hitachi Microcomputer System Ltd
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Filing: 1987-12-17
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Granted: —
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Expires: 2007-12-17
Abstract
Abstract A microprocessor can stop a program by an address or data under a complex break condition. A break function as a debugging tool which is more easy to use for a user of the microprocessor is provided.
Inventors
- 👤 Susumu Hitachi Daini Kyoshinryo Narita
- 👤 Atsushi Hasegawa
- 👤 Satoshi Masuda
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 05:55
CPC Classifications
G; G06; G06F; G06F11/00; G06F11/36; G06F11/362; G06F11/3648
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
86 words
A one-chip microprocessor comprising: (a) a plurality of hold means (101) for holding addresses or data; (b) compare means (102) for comparing the contents of said hold means with an address or data; (c) history hold means (106) for holding history of said compare means; (d) control means (105) for producing an output signal when a predetermined condition is met in accordance with signals from said compare means and said history hold means; and (e) set means for setting said predetermined condition into said control means.
Claim 2
Dependent Claim
86 words
A one-chip microprocessor comprising: (a) a plurality of hold means (101) for holding addresses or data; (b) compare means (102) for comparing the contents of said hold means with an address or data; (c) history hold means (106) for holding history of said compare means; (d) control means (105) for producing an output signal when a predetermined condition is met in accordance with signals from said compare means and said history hold means; and (e) set means for setting said predetermined condition into said control means.
Claim 3
Dependent Claim
22 words
A one-chip microprocessor according to Claim 1, further comprising: (f) means (103) for selectively supplying addresses or data to said compare means.
Claim 4
Dependent Claim
28 words
A one-chip microprocessor according to Claim 1 or Claim 2, further comprising: (g) alignment means (104) for aligning bit lengths of the data to a predetermined bit length.
Claim 5
Dependent Claim
17 words
A one-chip microprocessor according to Claim 1, wherein a plurality of said compare means (105) are provided.
Claim 6
Dependent Claim
25 words
A one-chip microprocessor according to any of the Claims 1 to 4, wherein said compare means has a function to compare magnitudes of input signals.
Claim 7
Dependent Claim
80 words
A one-chip microprocessor comprising: (a) a plurality of hold means (101) for holding addresses or data; (b) compare means (102) for comparing the contents of said hold means with an address or data; (c) history hold means (106) for holding history of said compare means; and (d) control means (105) for producing an output signal when the address or data held in second hold means is accessed after the address or data held in first hold means has been accessed.
Claim 8
Dependent Claim
80 words
A one-chip microprocessor comprising: (a) a plurality of hold means (101) for holding addresses or data; (b) compare means (102) for comparing the contents of said hold means with an address or data; (c) history hold means (106) for holding history of said compare means; and (d) control means (105) for producing an output signal when the address or data held in second hold means is accessed after the address or data held in first hold means has been accessed.
Claim 9
Dependent Claim
102 words
A one-chip microprocessor comprising: (a) a plurality of hold means (101) for holding addresses or data; (b) a plurality of compare means (102) for comparing the contents of said hold means with an address or data; (c) history hold means (106) for holding history of said compare means; and (d) control means (105) for producing an output signal by using at least a signal supplied from a specific one of said hold means through a specific one of said compare means and a signal held in said history hold means from other of said hold means through other of said compare means.
Claim 10
Dependent Claim
102 words
A one-chip microprocessor comprising: (a) a plurality of hold means (101) for holding addresses or data; (b) a plurality of compare means (102) for comparing the contents of said hold means with an address or data; (c) history hold means (106) for holding history of said compare means; and (d) control means (105) for producing an output signal by using at least a signal supplied from a specific one of said hold means through a specific one of said compare means and a signal held in said history hold means from other of said hold means through other of said compare means.
References Cited (Backward Citations)
No citation records indexed.
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