Initial port to Linux (using Allegro).

64-bit fixes.
Some changes to aid portability.
A few other tweaks.

src/win-time.c

@@ -0,0 +1,43 @@
+#include <windows.h>
+#include "ibm.h"
+#include "nvr.h"
+
+void time_get(char *nvrram)
+{
+	SYSTEMTIME systemtime;
+	int c, d;
+	uint8_t baknvr[10];
+
+        memcpy(baknvr,nvrram,10);
+        GetLocalTime(&systemtime);
+
+        d = systemtime.wSecond % 10;
+        c = systemtime.wSecond / 10;
+        nvrram[0] = d | (c << 4);
+        d = systemtime.wMinute % 10;
+        c = systemtime.wMinute / 10;
+        nvrram[2] = d | (c << 4);
+        d = systemtime.wHour % 10;
+        c = systemtime.wHour / 10;
+        nvrram[4] = d | (c << 4);
+        d = systemtime.wDayOfWeek % 10;
+        c = systemtime.wDayOfWeek / 10;
+        nvrram[6] = d | (c << 4);
+        d = systemtime.wDay % 10;
+        c = systemtime.wDay / 10;
+        nvrram[7] = d | (c << 4);
+        d = systemtime.wMonth % 10;
+        c = systemtime.wMonth / 10;
+        nvrram[8] = d | (c << 4);
+        d = systemtime.wYear % 10;
+        c = (systemtime.wYear / 10) % 10;
+        nvrram[9] = d | (c << 4);
+        if (baknvr[0] != nvrram[0] ||
+            baknvr[2] != nvrram[2] ||
+            baknvr[4] != nvrram[4] ||
+            baknvr[6] != nvrram[6] ||
+            baknvr[7] != nvrram[7] ||
+            baknvr[8] != nvrram[8] ||
+            baknvr[9] != nvrram[9])
+		nvrram[0xA]|=0x80;
+}