XRAM_XRAM_CHAN_INCR
#define X_SIZE (XRAM_XRAM_CHANNEL_COUNT * XRAM_XRAM_CHAN_INCR)
(_chan * XRAM_XRAM_CHAN_INCR))
(((a)+((s)-1)*XRAM_XRAM_CHAN_INCR < X_END))
(((a) >= X_END) && ((a)+((s)-1)*XRAM_XRAM_CHAN_INCR < AX_END))
(((a)+((s)-1)*XRAM_XRAM_CHAN_INCR < X_EXT))
(((a)+((s)-1)*XRAM_XRAM_CHAN_INCR < AX_END))
(((a) - XRAM_CHIP_OFFSET) / XRAM_XRAM_CHAN_INCR)