Cross memory mode
Register(s) | Bit(s) | Contents |
---|---|---|
0 | 0 | |
1 | 0 | 0 for register format 1 for list format |
1-7 | Same as bits 1-7 of VLSFLAG1 field of VSL | |
for register format; irrelevant for list format | ||
8-31 | 24-bit starting address on which the service is to be performed for register format; 24-bit address of user's first VSL for list format | |
2 | 0-7 | Same as VSLFLAG2 field in VSL for register format; irrelevant for list format |
8-31 | 24-bit ending address + 1 for which the service is to be performed for register format; irrelevant for list format | |
3 | Irrelevant | |
4 | 0 | |
5-6 | Irrelevant | |
7 | ASCB address of current address space | |
8-13 | Irrelevant | |
14 | Return address | |
15 | Entry point to page services, obtained from the CVT field, CVTPSXM. |
On return, the page service sets the registers as follows:
- Register
- Contents
- 0-4
- Used by the system as work registers.
- 5-14
- Unchanged.
- 15
- Return code.
The only return code possible is 0. This indicates that the requested function was processed successfully.