Figure 1. RESERVEX Format
RESERVEX reserves a specified amount of memory above 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 (RESERVEX=n), a decimal multiple of K, where K=1024 bytes (RESERVEX=nK), or a decimal multiple of M, where M=1048576 bytes (RESERVEX=nM).