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include vmm.inc mov ecx, 0 ; must be zero VMMcall Get_Next_Arena mov [Data], eax ; data value mov [Flags], ecx ; high MS-DOS memory flags mov [Memory], edx ; points to array of Common_Memory_struc |
The Get_Next_Arena service returns a pointer to an MS-DOS data structure.
Virtual devices must not use this service; it is intended for exclusive use by the virtual MS-DOS manager.
This service has no parameters.
The EAX, ECX, and EDX registers contain the following information:
| Register | Description |
| EAX | Specifies a data value. |
| ECX | Specifies the high MS-DOS flags. It can be a combination of the following values: |
| Value | Meaning |
| GNA_HiDOSLinked | Set if high MS-DOS arenas were linked in when Windows was started. |
| GNA_IsHighDOS | Set if high MS-DOS arenas exist. |
| EDX | Points to an array of Common_Memory_struc structures specifying the addresses and sizes of high MS-DOS memory segments. Each element of the list has the following form: |
| Common_Memory_struc struc CM_seg dw ? ; segment address of start CM_size dw ? ; size in paragraphs Common_Memory_struc ends | |
| The last element of the array contains zero. |
EAX, ECX, EDX, Flags