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--- main.c Mon Nov 5 18:58:30 2001
+++ main.c.new Thu Nov 15 01:45:12 2001
@@ -149,21 +151,49 @@
static unsigned short ipchksum(unsigned short *ip, int len);
static unsigned short udpchksum(struct iphdr *packet);
+
+#if defined(ASK_BOOT) && ASK_BOOT > 0 && (ANS_DEFAULT == ANS_AUTO)
+/*
+ * Read Installed Hard Disk Count from BIOS memory at 0:0475
+ */
+static int hdsk_cnt(void)
+{
+ int retv;
+ __asm__ __volatile__(
+ "xorw %%ax,%%ax\n\t"
+ "movb 0x475,%%al\n"
+ : "=a" (retv)
+ : /* no inputs */
+ : "ax", "cc", "memory"
+ );
+ return(retv);
+}
+#endif /* ASK_BOOT && ANS_AUTO */
+
+
static inline void ask_boot(void)
{
#if defined(ASK_BOOT) && ASK_BOOT > 0
while(1) {
- int c;
+ int c, deflt;
unsigned long time;
+#if defined(ASK_BOOT) && ASK_BOOT > 0 && (ANS_DEFAULT == ANS_AUTO)
+ if (hdsk_cnt() != 0)
+ deflt = ANS_LOCAL;
+ else
+ deflt = ANS_NETWORK;
+#else
+ deflt = ANS_DEFAULT;
+#endif
printf(ASK_PROMPT);
for (time = currticks() + ASK_BOOT*TICKS_PER_SEC; !iskey(); )
if (currticks() > time) {
- c = ANS_DEFAULT;
+ c = deflt;
goto done;
}
c = getchar();
if ((c >= 'a') && (c <= 'z')) c &= 0x5F;
- if (c == '\n') c = ANS_DEFAULT;
+ if (c == '\n') c = deflt;
done:
if ((c >= ' ') && (c <= '~')) putchar(c);
putchar('\n');
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