Alter Page Map and Call (cross page Call)
|
Input |
Output |
|
AX |
56h |
Type Code |
Error
Code |
|
AX |
|
BX |
|
|
|
|
BX |
|
DX |
EMM
Handle |
|
|
CX |
|
DS:SI |
Ptr
to Page Map and Call Addr |
|
|
DX |
Type Code: 00h = Physical Page Number
01h = Segment Address
This subfunction saves the current memory mapping context,
alters the specified memory mapping context, and transfers
control to the specified address.
Notes:
* Flags and all registers except AX are preserved to the
called routine. On return, flags and all registers except AX
are preserved; AL is set to zero and AX is undefined.
* Values in registers which don't contain required parameters
maintain the values across the call. The values in registers
(with the exception of AX) and the flag state at the
beginning of the function are still in the registers and
flags when the target address is reached.
* Developers using this subfunction must make allowances for
the additional stack space this subfunction will use. |