INT 2F U - DOS 5.0 DOSSHELL - TASK SWITCHING API???
AX = 4A05h
SI = function
0000h reset???
0001h ???
0002h ???
0003h ???
0004h ???
BL = ???
0005h ???
0006h get ???
Return: ES:DI -> ???
0007h get ???
Return: AX = ???
0008h get ???
Return: DX:AX -> ???
0009h get ???
Return: ES = ???
000Ah ???
BL = ???
ES:DI -> ???
000Bh get ???
Return: AX = ???
000Ch ???
BL = ???
Return: DX:AX -> ???
Notes:  DOSSHELL chains to the previous handler if SI is not one of the values
listed above
the DOSSWAP.EXE module calls functions 03h,04h,05h,07h,08h,09h,0Ch
the Windows 3.1 DSWAP.EXE and WSWAP.EXE task switchers use these calls

See also: 2F4B01

2F4A05 - DOS 5.0 DOSSHELL - TASK SWITCHING API???