* BIT0
# 0x3F ZM_EP_IN_MAX_SIZE_HIGH_OFFSET
+
# 0x3E ZM_EP_IN_MAX_SIZE_LOW_OFFSET
-# 0x5F ZM_EP_OUT_MAX_SIZE_HIGH_OFFSET
# 0x5E ZM_EP_OUT_MAX_SIZE_LOW_OFFSET
+# 0x5F ZM_EP_OUT_MAX_SIZE_HIGH_OFFSET
+
# 0xAE ZM_EP3_BYTE_COUNT_HIGH_OFFSET
BIT3 - 1 xfer done?
comments: after sending data from target to host, set BIT3
-# 0xBE ZM_EP3_BYTE_COUNT_LOW_OFFSET
+
# 0xAF ZM_EP4_BYTE_COUNT_HIGH_OFFSET
BIT4 - 1 - reset fifo; 0 - disable reset?
comments: probably compatible with ZM_EP3_BYTE_COUNT_HIGH_OFFSET
+
+# 0xBE ZM_EP3_BYTE_COUNT_LOW_OFFSET
+
# 0xBF ZM_EP4_BYTE_COUNT_LOW_OFFSET
size of data in fifo buffer