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