Apple Macintosh LC 630 DOS - Manual (Page 54)

Memory management utilities
If you use a memory management utility such as EMM386 or QEMM, you
need to configure it to be compatible with your DOS-compatibility hardware
and software.
IMPORTANT Apple does not recommend using automated memory
configuration utilities with your DOS-compatible Macintosh because they can
require more memory than management utilities you configure manually.
Additionally, some memory configuration utilities may not be able to
determine the exact nature of the DOS-compatibility hardware, and therefore
may not be compatible.
If you want to use EMM386 (included as part of DOS) and don’t require
expanded memory, set CONFIG.SYS to the following:
DEVICE=C:\DOS\EMM386.EXE NOEMS RAM=D000-EFFF
If you require expanded memory, set CONFIG.SYS to the following:
DEVICE=C:\DOS\EMM386.EXE RAM=D000-EFFF FRAME=D000
If you want to use QEMM, use the frame option (ST:F):
DEVICE=C:\QEMM\QEMM386.SYS RAM ST:F ARAM=B080-B7FF
ARAM=C900-DFFF R:1
If you want to use the Stealth mapping option (ST:M), set CONFIG.SYS to
DEVICE=C:\QEMM\QEMM386.SYS RAM ST:M X=C800-CFFF X=FC00-
FCFF X=FE00-FFFF ARAM=B080-B7FF ARAM=C900-DFFF R:2
Configure other memory management utilities such that D000 through EFFF
is the only area in the BIOS that can be mapped to upper memory.
To prevent the ROM BIOS from becoming corrupted when the
DOS-compatibility card is configured for 2 MB of memory, set the
switch in the CONFIG.SYS file to turn memory testing off.
DEVICE=C:\DOS\HIMEM.SYS /TESTMEM:OFF
For more information on making the best use of memory, read the sections on
memory management in your DOS manual, or refer to the documentation for
your memory manager if you are using something other than EMM386.
43 Operating in the PC Environment