JPS55105747A - Microprocessor - Google Patents
MicroprocessorInfo
- Publication number
- JPS55105747A JPS55105747A JP1224779A JP1224779A JPS55105747A JP S55105747 A JPS55105747 A JP S55105747A JP 1224779 A JP1224779 A JP 1224779A JP 1224779 A JP1224779 A JP 1224779A JP S55105747 A JPS55105747 A JP S55105747A
- Authority
- JP
- Japan
- Prior art keywords
- output
- carry
- sign
- result
- microprocessor
- 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
Links
Abstract
PURPOSE: To perform the operation at high speed, by detecting that other registers and the result of operation are opposite in the sign, through the carry signal indicating carry and the code bit of one register, among the output signals of the operation section from the microprocessor including ALU.
CONSTITUTION: In the microprocessor having the architecture in which one input data among those to ALU from two or more registers can not be outputted externally, the sign output 12 of rhe result of operation obtained via the output buffer from the output section 4a of multiplexer and the carry output 10 indicating the carry of result of operaion are inputted to the exclusive OR gate 13 to obtain the sign discrimination output 11.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1224779A JPS55105747A (en) | 1979-02-07 | 1979-02-07 | Microprocessor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1224779A JPS55105747A (en) | 1979-02-07 | 1979-02-07 | Microprocessor |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55105747A true JPS55105747A (en) | 1980-08-13 |
Family
ID=11800028
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1224779A Pending JPS55105747A (en) | 1979-02-07 | 1979-02-07 | Microprocessor |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55105747A (en) |
-
1979
- 1979-02-07 JP JP1224779A patent/JPS55105747A/en active Pending
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS54122043A (en) | Electronic computer | |
JPS55105747A (en) | Microprocessor | |
JPS5251828A (en) | Key input discriminating unit | |
JPS5351936A (en) | High speed addition circuit | |
JPS55135942A (en) | Operation device | |
JPS5436140A (en) | Control unit for magnetic disc | |
JPS55166749A (en) | Decoder circuit | |
JPS52130249A (en) | Register write-in system | |
JPS553001A (en) | Calender information display system | |
JPS5743240A (en) | Operating system with shift | |
JPS5621245A (en) | Detection system of address coincidence system | |
JPS5294040A (en) | Data processing unit | |
JPS6486271A (en) | Accumulator | |
JPS5629892A (en) | Clear control circuit | |
JPS5541565A (en) | Address modification system | |
JPS5636730A (en) | Data processor | |
JPS52103936A (en) | Multiple data group read circuit | |
JPS5262481A (en) | Arithmetic unit | |
JPS5413237A (en) | Interface circuit | |
JPS52156514A (en) | Data detection system | |
JPS55123746A (en) | Diagnostic system of logic unit | |
JPS522134A (en) | Arithmetic system | |
JPS56153463A (en) | Display system of minicomputer | |
JPS564844A (en) | Information processor | |
JPS51122349A (en) | Jump address determination method by external input |