Difference between revisions of "83Plus:RAM:8478"
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| − | + | [[Category:83Plus:RAM:By_Name|OP1-OP6]] [[Category:83Plus:RAM:By_Address|8478 - OP1-OP6]] | |
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== Synopsis == | == Synopsis == | ||
| − | '''Official Name:''' | + | '''Official Name:''' OP1-OP6 |
| − | '''Memory Address:''' | + | '''Memory Address:''' 8478 |
| − | '''Length:''' | + | '''Length:''' 6 "registers" of 11 bytes each. |
| − | This area of memory | + | This area of memory is commonly used as temporary memory and for argument passing by many system routines. |
== Comments == | == Comments == | ||
| − | This | + | This area is usually divided into six 11-byte registers: |
| + | * OP1 = 8478h | ||
| + | * OP2 = 8483h | ||
| + | * OP3 = 848Eh | ||
| + | * OP4 = 8499h | ||
| + | * OP5 = 84A4h | ||
| + | * OP6 = 84AFh | ||
| + | |||
| + | Among the many functions the OP registers are used for: | ||
| − | + | * A single OP register can hold an 11-byte floating point number. | |
| − | * | + | * Two adjacent OP registers -- usually OP1 and OP2, OP3 and OP4, or OP5 and OP6 -- can hold a 22-byte complex number. |
| + | * The first 9 bytes of an OP register can hold a variable name. | ||
| + | * OP3-OP6 are used for storing short strings. | ||
| + | * All 6 OP registers can be used together to hold a single big integer. | ||
Latest revision as of 22:22, 29 March 2005
Synopsis
Official Name: OP1-OP6
Memory Address: 8478
Length: 6 "registers" of 11 bytes each.
This area of memory is commonly used as temporary memory and for argument passing by many system routines.
Comments
This area is usually divided into six 11-byte registers:
- OP1 = 8478h
- OP2 = 8483h
- OP3 = 848Eh
- OP4 = 8499h
- OP5 = 84A4h
- OP6 = 84AFh
Among the many functions the OP registers are used for:
- A single OP register can hold an 11-byte floating point number.
- Two adjacent OP registers -- usually OP1 and OP2, OP3 and OP4, or OP5 and OP6 -- can hold a 22-byte complex number.
- The first 9 bytes of an OP register can hold a variable name.
- OP3-OP6 are used for storing short strings.
- All 6 OP registers can be used together to hold a single big integer.
