UART_FIFO_WORKS is defined. Otherwise use outportb.
From Francisco Pastor <fpastor.etra-id@etra.es>
2001-02-04 Eli Zaretskii <eliz@is.elta.co.il>
+ * ser-go32.c (dos_write) [UART_FIFO_WORKS]: Use outportsb only if
+ UART_FIFO_WORKS is defined. Otherwise use outportb.
+ From Francisco Pastor <fpastor.etra-id@etra.es>
+
* go32-nat.c (go32_xfer_memory): Make the argument list consistent
with target.h's `to_xfer_memory' member.
/* send the data, fifosize bytes at a time */
cnt = fifosize > len ? len : fifosize;
port->txbusy = 1;
+ /* Francisco Pastor <fpastor.etra-id@etra.es> says OUTSB messes
+ up the communications with UARTs with FIFOs. */
+#ifdef UART_FIFO_WORKS
outportsb (port->base + com_data, str, cnt);
str += cnt;
len -= cnt;
+#else
+ for ( ; cnt > 0; cnt--, len--)
+ outportb (port->base + com_data, *str++);
+#endif
#ifdef DOS_STATS
cnts[CNT_TX] += cnt;
#endif