--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/frbl/reconst/serial.c	Fri Mar 06 07:08:58 2020 +0000
@@ -0,0 +1,42 @@
+#include "main/sys_types.h"
+#include "serial.h"
+#include "convert.h"
+
+static const SYS_UWORD32 S0_expect[7] = {6, 0, 0, 'H', 'D', 'R', 0x1B};
+static const SYS_UWORD32 S7_expect[6] = {5, 0, 0, 0, 0, 0xFA};
+
+static const SYS_UWORD32 uart_base[2] = {0xFFFF5800, 0xFFFF5000};
+
+static SYS_UWORD32 bss_0;
+static SYS_UWORD8 bss_4;
+static SYS_UWORD8 bss_5;
+static SYS_UWORD8 bss_6;
+static SYS_UWORD8 bss_7;
+static SYS_UWORD8 bss_8;
+static SYS_UWORD32 bss_0xc;
+static SYS_UWORD8 bss_0x10;
+static SYS_UWORD16 bss_0x12;
+
+static SYS_UWORD32
+static_func_0x0(SYS_UWORD8 arg1, SYS_UWORD32 *arg2, SYS_UWORD32 *arg3,
+		SYS_UWORD16 *arg4)
+{
+	SYS_UWORD32 retval;
+
+	bss_5 += arg1;
+	if (bss_6) {
+		bss_0x12 += arg1;
+		*arg4 = bss_0x12;
+		*arg2 = 0;
+		retval = 0;
+	} else {
+		*arg3 += 2;
+		bss_0x12 = arg1 << 8;
+		retval = 1;
+	}
+	bss_6 = ~bss_6 & 1;
+	bss_0x10--;
+	if (bss_0x10 == 0)
+		bss_0xc = 6;
+	return retval;
+}