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.

Parent topic: Branch entry to page services