FR2251054A1 - Data processing system for indexing and substitution of addresses - operates on a single instruction specifying index registers - Google Patents
Data processing system for indexing and substitution of addresses - operates on a single instruction specifying index registersInfo
- Publication number
- FR2251054A1 FR2251054A1 FR7437173A FR7437173A FR2251054A1 FR 2251054 A1 FR2251054 A1 FR 2251054A1 FR 7437173 A FR7437173 A FR 7437173A FR 7437173 A FR7437173 A FR 7437173A FR 2251054 A1 FR2251054 A1 FR 2251054A1
- Authority
- FR
- France
- Prior art keywords
- indexing
- substitution
- index
- index registers
- addresses
- 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.)
- Granted
Links
- 238000006467 substitution reaction Methods 0.000 title abstract 4
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/30—Arrangements for executing machine instructions, e.g. instruction decode
- G06F9/34—Addressing or accessing the instruction operand or the result ; Formation of operand address; Addressing modes
- G06F9/355—Indexed addressing
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/30—Arrangements for executing machine instructions, e.g. instruction decode
- G06F9/30145—Instruction analysis, e.g. decoding, instruction word fields
- G06F9/3016—Decoding the operand specifier, e.g. specifier format
Landscapes
- Engineering & Computer Science (AREA)
- Software Systems (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Executing Machine-Instructions (AREA)
Abstract
The working store contains instruction and control words and data and is connected to an instruction word register, a control word register and a number of index registers. Each instruction word contains operation, address constant, index and code fields for selective indexing and/or substitution of address constants. The code in the code fields of the store words addressed after indexing and substitution control further indexing and repeated substitution operations, whereby all the necessary index registers are indicated by the index field in the instruction word register. The index settings function from three values, K,I, F which may take the value 0 or 1.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19732356200 DE2356200A1 (en) | 1973-11-08 | 1973-11-08 | DATA PROCESSING SYSTEM WITH A WORKING MEMORY |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2251054A1 true FR2251054A1 (en) | 1975-06-06 |
| FR2251054B3 FR2251054B3 (en) | 1977-08-12 |
Family
ID=5897723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7437173A Granted FR2251054A1 (en) | 1973-11-08 | 1974-11-08 | Data processing system for indexing and substitution of addresses - operates on a single instruction specifying index registers |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE2356200A1 (en) |
| FR (1) | FR2251054A1 (en) |
-
1973
- 1973-11-08 DE DE19732356200 patent/DE2356200A1/en active Pending
-
1974
- 1974-11-08 FR FR7437173A patent/FR2251054A1/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| DE2356200A1 (en) | 1975-05-22 |
| FR2251054B3 (en) | 1977-08-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |