From c4e02e86548fbbc9ab97de48d3cb04f7c87f4697 Mon Sep 17 00:00:00 2001
From: Bart Oldeman <bart@dosemu.org>
Date: Fri, 19 Sep 2003 02:13:35 +0000
Subject: [PATCH] Correct floppy booting; increase "menu space tolerance" from
 3 to 10.

git-svn-id: https://svn.code.sf.net/p/freedos/svn/kernel/trunk@701 6ac86273-5f31-0410-b378-82cca8765d1b
---
 kernel/config.c   |  9 +++++----
 kernel/kernel.asm | 10 +---------
 kernel/main.c     | 25 +++++++++++++------------
 3 files changed, 19 insertions(+), 25 deletions(-)

diff --git a/kernel/config.c b/kernel/config.c
index 51cb1f2..02e9b05 100644
--- a/kernel/config.c
+++ b/kernel/config.c
@@ -315,12 +315,12 @@ STATIC struct table commands[] = {
 int  findend(BYTE * s)
 {
   int nLen = 0;
-  /* 'marks' end if at least three spaces, 0, or newline is found. */
+  /* 'marks' end if at least ten spaces, 0, or newline is found. */
   while (*s && (*s != 0x0d || *s != 0x0a) )
   {
     BYTE *p= skipwh(s);
-    /* ah, more than two whitespaces ? We're done here (hrmph!) */
-    if((unsigned int)p - (unsigned int)s>=3)
+    /* ah, more than 9 whitespaces ? We're done here (hrmph!) */
+    if(p - s >= 10)
       break;
     nLen++;
     ++s;
@@ -1124,6 +1124,7 @@ STATIC VOID CfgSwitches(BYTE * pLine)
             pLine++;                    /* skip optional separator */
           if (!isnum(*pLine))
           {
+            pLine--;
             Config.ebda2move = 0;
             break;
           }
@@ -1983,7 +1984,7 @@ RestartInput:
     }
     else if(key == 0x5000 && MenuColor != -1)      /* arrow down */
     {
-      if(MenuSelected<10 && (Menus & (1 << (MenuSelected+1))) )
+      if(MenuSelected<MENULINESMAX && (Menus & (1 << (MenuSelected+1))) )
       {
         MenuSelected++;
       }
diff --git a/kernel/kernel.asm b/kernel/kernel.asm
index 024968a..0f75e15 100644
--- a/kernel/kernel.asm
+++ b/kernel/kernel.asm
@@ -158,17 +158,9 @@ cont:		mov     ax,cs
                 int 010h
                 popf
                 pop bx
-
-		xor	ax,ax
-		mov	es,ax
-		mov	[es:0x5e0], bl  ; store orig bootdrive:used by initdisk
-
                 pop ax
 
-		inc	bl
-		jns	floppy
-		mov	bl,3            ; set to C: if hard disk
-floppy:		mov	byte [_BootDrive],bl ; tell where we came from
+		mov	byte [_BootDrive],bl ; tell where we came from
 
 ;!!		int	11h
 ;!!		mov	cl,6
diff --git a/kernel/main.c b/kernel/main.c
index 669f2cc..2cd4fee 100644
--- a/kernel/main.c
+++ b/kernel/main.c
@@ -98,6 +98,8 @@ void fmemcpy(void far *dest, const void far *src, unsigned n)
 
 VOID ASMCFUNC FreeDOSmain(void)
 {
+  unsigned char drv;
+
 #ifdef _MSC_VER
   extern FAR prn_dev;
   DosDataSeg = (__segment) & DATASTART;
@@ -105,31 +107,30 @@ VOID ASMCFUNC FreeDOSmain(void)
   LoL = &DATASTART;
 #endif
 
-                        
                         /*  if the kernel has been UPX'ed,
                                 CONFIG info is stored at 50:e2 ..fc
                             and the bootdrive (passed from BIOS)
                             at 50:e0
-                        */    
-                        
+                        */
+
   if (fmemcmp(MK_FP(0x50,0xe0+2),"CONFIG",6) == 0)      /* UPX */
   {
-    UBYTE drv;
-
     fmemcpy(&InitKernelConfig, MK_FP(0,0x5e0+2), sizeof(InitKernelConfig));
 
     drv = *(UBYTE FAR *)MK_FP(0,0x5e0) + 1;
-    if (drv >= 0x80)
-      drv = 3; /* C: */
-    LoL->BootDrive = drv;
-    
-    *(DWORD FAR *)MK_FP(0,0x5e0+2) = 0; 
-  } 
+    *(DWORD FAR *)MK_FP(0,0x5e0+2) = 0;
+  }
   else
   {
+    drv = LoL->BootDrive + 1;
+    *(UBYTE FAR *)MK_FP(0,0x5e0) = drv - 1;
     fmemcpy(&InitKernelConfig, &LowKernelConfig, sizeof(InitKernelConfig));
   }
-  
+
+  if (drv >= 0x80)
+    drv = 3; /* C: */
+  LoL->BootDrive = drv;
+
   setvec(0, int0_handler);      /* zero divide */
   setvec(1, empty_handler);     /* single step */
   setvec(3, empty_handler);     /* debug breakpoint */