[hbelusca] 63297: [NTVDM]: Introduce a echo state for INT 21h, AH=01h and AH=3Fh.

Author: hbelusca
Date: Wed May 14 18:50:29 2014
New Revision: 63297

URL: http://svn.reactos.org/svn/reactos?rev=63297&view=rev
Log:
[NTVDM]: Introduce a echo state for INT 21h, AH=01h and AH=3Fh.

Modified:
    trunk/reactos/subsystems/ntvdm/dos/dos32krnl/dos.c
    trunk/reactos/subsystems/ntvdm/dos/dos32krnl/dos.h
    trunk/reactos/subsystems/ntvdm/dos/dos32krnl/dosfiles.c

Modified: trunk/reactos/subsystems/ntvdm/dos/dos32krnl/dos.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/subsystems/ntvdm/dos/dos32…
==============================================================================
--- trunk/reactos/subsystems/ntvdm/dos/dos32krnl/dos.c	[iso-8859-1] (original)
+++ trunk/reactos/subsystems/ntvdm/dos/dos32krnl/dos.c	[iso-8859-1] Wed May 14 18:50:29
2014
@@ -39,6 +39,9 @@
 static BYTE DosAllocStrategy = DOS_ALLOC_BEST_FIT;
 static BOOLEAN DosUmbLinked = FALSE;
 static WORD DosErrorLevel = 0x0000;
+
+/* Echo state for INT 21h, AH = 01h and AH = 3Fh */
+BOOLEAN DoEcho = FALSE;
 
 /* PRIVATE FUNCTIONS **********************************************************/
 
@@ -1434,8 +1437,9 @@
         case 0x01:
         {
             // FIXME: Under DOS 2+, input / output handle may be redirected!!!!
+            DoEcho = TRUE;
             Character = DosReadCharacter(DOS_INPUT_HANDLE);
-            DosPrintCharacter(DOS_OUTPUT_HANDLE, Character);
+            DoEcho = FALSE;
 
             // /* Let the BOP repeat if needed */
             // if (getCF()) break;
@@ -1576,6 +1580,8 @@
 
             while (Count < InputBuffer->MaxLength)
             {
+                // FIXME!! This function should interpret backspaces etc...
+
                 /* Try to read a character (wait) */
                 Character = DosReadCharacter(DOS_INPUT_HANDLE);
 
@@ -2051,10 +2057,14 @@
         case 0x3F:
         {
             WORD BytesRead = 0;
-            WORD ErrorCode = DosReadFile(getBX(),
-                                         SEG_OFF_TO_PTR(getDS(), getDX()),
-                                         getCX(),
-                                         &BytesRead);
+            WORD ErrorCode;
+
+            DoEcho = TRUE;
+            ErrorCode = DosReadFile(getBX(),
+                                    SEG_OFF_TO_PTR(getDS(), getDX()),
+                                    getCX(),
+                                    &BytesRead);
+            DoEcho = FALSE;
 
             if (ErrorCode == ERROR_SUCCESS)
             {

Modified: trunk/reactos/subsystems/ntvdm/dos/dos32krnl/dos.h
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/subsystems/ntvdm/dos/dos32…
==============================================================================
--- trunk/reactos/subsystems/ntvdm/dos/dos32krnl/dos.h	[iso-8859-1] (original)
+++ trunk/reactos/subsystems/ntvdm/dos/dos32krnl/dos.h	[iso-8859-1] Wed May 14 18:50:29
2014
@@ -160,6 +160,8 @@
 
 #pragma pack(pop)
 
+extern BOOLEAN DoEcho;
+
 /* FUNCTIONS ******************************************************************/
 
 extern CALLBACK16 DosContext;

Modified: trunk/reactos/subsystems/ntvdm/dos/dos32krnl/dosfiles.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/subsystems/ntvdm/dos/dos32…
==============================================================================
--- trunk/reactos/subsystems/ntvdm/dos/dos32krnl/dosfiles.c	[iso-8859-1] (original)
+++ trunk/reactos/subsystems/ntvdm/dos/dos32krnl/dosfiles.c	[iso-8859-1] Wed May 14
18:50:29 2014
@@ -167,15 +167,14 @@
             /* Retrieve the character in AL (scan code is in AH) */
             Character = getAL();
 
-            // FIXME: Sometimes we need echo, some other times not.
-            // DosPrintCharacter(DOS_OUTPUT_HANDLE, Character);
+            if (DoEcho) DosPrintCharacter(DOS_OUTPUT_HANDLE, Character);
 
             ((PCHAR)Buffer)[BytesRead32] = Character;
 
             /* Stop on first carriage return */
             if (Character == '\r')
             {
-                // DosPrintCharacter(DOS_OUTPUT_HANDLE, '\n');
+                if (DoEcho) DosPrintCharacter(DOS_OUTPUT_HANDLE, '\n');
                 break;
             }