LONG Maddalt( start, size )
VOIDP start;
LONG size;
Maddalt() informs
GEMDOS of the existence of additional alternative RAM (also called TT-RAM, as opposed to ST-RAM) that would not normally have been identified by the system.
Opcode
20 (0x14)
Availability
Available as of
GEMDOS version 0.19 only.
Parameters
start indicates the starting address for the block of memory to be added to the
GEMDOS free list.
size indicates the length of this block in bytes.
Binding
move.l size,-(sp)
pea start
move.w #$14,-(sp)
trap #1
lea 10(sp),sp
Return Value
Maddalt() returns
E_OK (
0) if the call succeeds or a negative
GEMDOS error code otherwise.
Comments
This call should only be used to identify RAM not normally identified by the
BIOS at startup (added through a VME-card or hardware modification). Once this RAM has been identified to the system it may not be removed and should only be allocated and used via the standard system calls. In addition, programs wishing to use this RAM must have their alternative RAM load bit set or use
Mxalloc() to specifically request alternative RAM.
See the discussion about
MemoryManagement for more information about the types of available RAM.
See Also