Setting Sizes of Native Mode and Compatibility Mode Stacks

The STACK command (abbreviated ST) configures the default sizes of the NM and CM stacks and the heap. STACK has the following parameters:

   STACK (ST)    [NM       = default nm stack size]

                 [MAXNM    = max size of nm stack size]

                 [CM       = default cm stack size]

                 [MAXCM    = max size of cm stack]

                 [HEAP     = default nm heap-size]

                 [MAXHEAP  = max size of nm heap]

NM sets the default NM stack size, which is expressed in bytes. The NM value must be less than the values of MAXNM (see below).

MAXNM sets the maximum NM stack size, which is expressed in bytes.

CM sets the default CM stack size, which is expressed in words (16 bits in length). The value set for the CM parameter must be less than the value set for the MAXCM parameter (see below).

MAXCM sets the maximum allowable CM stack size.

HEAP sets the default heap size, which is expressed in bytes. The value must not exceed MAXHEAP (see below).

MAXHEAP sets the maximum heap size, which is expressed in bytes.

To change one of the STACK parameters, enter the STACK command and at least one parameter to change. Here are two examples. The first is keyword and the second is positional.

   mi>STACK NM=262144 CM=4096

 

   mi>STACK 262144 262144,,20000 

Table 7-5 shows the minimum and maximum values of the STACK command parameters.