这是我在648中看到的一个cmd文件，一般在o前面不是都要用到冒号的吗，如L2DRAM，为什么在IBUF与o之间又不用冒号了呢？
MEMORY{
KRAM : o = 0xE0000000, l = 0x10000000
L2DRAM : o = 0x00A01000, l = 0x00010000
/* IMBUF MEM Shared between A/B*/
IBUF o = 0x00100000 l = 0x00002000
/*IMGBUF Full Mem*/
IBUF_FULL o= 0x00104000 l = 0x00004000
/*IMX Working MEM*/
IWMEM o= 0x00108000 l = 0x00008000
/*SEQ P MEM*/
SEQPMEM o= 0x00110000 l = 0x00001000
/*SEQ data MEM*/
SEQDMEM: o = 0x0209F400 l = 0x400 /* SEQ Data Memory */
/*IMC cmd memory*/
IMXCMDMEM o= 0x00114000 l = 0x00002000
}
