allcocate large buffer

[16LF76]

Compiler version: 3.111

I tried to allocate a large buffer:

#define RCV_BUFF_SIZE 96
char serial_in_buffer[RCV_BUFF_SIZE]; // Serial input output buffers

When the size is 96, RAM usage: 49%~53%
but when size is 97 or, got " Not enough RAM for all variables"

BTW, I tried to allocate two 64-byte buffer, no problem.

What should I do in order to allocate large (128 bytes) buffer?

Regards,

[PCM programmer]

http://www.ccsinfo.com/forum/viewtopic.php?t=27958&highlight=array+size