Figure 1. RESERVE Format
RESERVE sets aside a specified amount of memory below the 16-megabyte line for the user. This parameter takes effect only when CORE=MAX is in effect.
The memory may be specified as a decimal number of bytes (RESERVE=n), a decimal multiple of K, where K=1024 bytes (RESERVE=nK), or a decimal multiple of M, where M=1048576 bytes (RESERVE=nM).