Texas Instruments 3000 - Manual (Page 165)

Memory Device Drivers
Contexts = nn (C=) specifies the number of contexts for windows 0 - 3 that can be saved
by processes using EMS memory. The maximum number of contexts is 255; the
minimum is 3. The default is the number of handles that are allocated.
Depth = nn (D=) specifies the number of consecutive contexts that can be saved for a
given handle before a restore must be initiated. The maximum depth is 32. The default is
1, which is also the minimum.
eXclude = xxxx-xxxx (X=) specifies a range of addresses that should not be used for EMS
mapping. By default, EMM.SYS will automatically exclude areas known to contain
ROMs or video RAM. This parameter allows you to exclude a range of addresses that
might be included by the memory manager's automatic selection process. The address
range selected should be hexadecimal segment addresses. You may specify as many
exclude ranges as necessary, and they can overlap.
EMS (E) specifies that only the standard 64 KB, EMS window should be provided.
Fulldisplay (F) specifies that the memory manager display information about the EMS
configuration after its sign-on.
Handles = nnnn (H=) specifies the number of handles available for programs using EMS
memory. The minimum number of handles you can allocate is 3. The default number of
handles is 255, which is also the maximum.
F-10 Configuring Memory