From 6b82b8862f8cc69a78eee38a0afba9201694d029 Mon Sep 17 00:00:00 2001
From: Davide <bresolin.davide@gmail.com>
Date: Fri, 4 Mar 2022 13:07:42 +0100
Subject: [PATCH 1/3] PC5086 compatibility fix. Removed access to port 64h, not
 present in the 8255 PPI Reset keyboard by toggling bit 7 of port 61h

---
 SOURCE/KEYB.PAS | 39 +++++++++------------------------------
 1 file changed, 9 insertions(+), 30 deletions(-)

diff --git a/SOURCE/KEYB.PAS b/SOURCE/KEYB.PAS
index bf27780..f9dba53 100644
--- a/SOURCE/KEYB.PAS
+++ b/SOURCE/KEYB.PAS
@@ -1559,31 +1559,19 @@ end;
 ---- MODULE 7: XT specific routines                                 -----
 ------------------------------------------------------------------------}
 
-
-CONST
-        { keyboard commands }
-        DisableKeyboard = $AD;
-        EnableKeyboard  = $AE;
-
 {************************************************************************
-** EnableKeyboardProc: enable keyboard hardware                        **
+** EnableKeyboardProc: clear keyboard buffer                           **
 ** ------------------------------------------------------------------- **
 ** IN:   -                                                             **
-** OUT:  AX and CX are trashed                                         **
+** OUT:  AL is trashed                                                 **
 *************************************************************************}
 Procedure EnableKeyboardProc; assembler;
-label WaitReady2;
 asm
-      XOR       CX, CX       { counter to 65535! }
-
-WaitReady2:
-     IN         AL, $64      { read status register }
-     TEST       AL, 2        { bit 1 set: input buffer full? }
-     LOOPNZ     WaitReady2   { loop until timeout or bit 1 clear }
-
-     MOV        AL, EnableKeyboard
-     OUT        $64, AL      { send the enable command }
-
+     IN         AL, $61   { read status register }
+     OR         AL, $F0   { set bit 7, clear keyboard }
+     OUT        $61, AL   { clear keyboard }
+     AND        AL, $7F   { clear bit 7 }
+     OUT        $61, AL   { toggle clear bit to reenable keyboard }
 end;
 
 
@@ -1620,15 +1608,6 @@ Start:
      CLI                  { disable hardware ints }
      XOR        CX,CX
      MOV        ES,CX
-     DEC        CX            { counter to 65535! }
-
-WaitReady1:
-     IN         AL, $64       { read status register }
-     TEST       AL, 2         { bit 1 set: input buffer full? }
-     LOOPNZ     WaitReady1    { loop until timeout or bit 1 clear }
-
-     MOV        AL, DisableKeyboard
-     OUT        $64, AL       { send the disable command }
 
      {-- Read and authenticate scancode --}
      IN         AL, $60      { get scancode to AL }
@@ -1666,7 +1645,7 @@ EndProcessPause:
      JMP        LeaveInt
 
 ChainToOld:
-     CALL       EnableKeyboardProc
+     { CALL EnableKeyboardProc -- not needed, OldInt9h will clear buffer }
      PUSHF
      STI
      CALL       DWORD PTR CS:[Offset OldInt9h]
@@ -2588,7 +2567,7 @@ begin
         mov     ah, $58          { set alloc strategy }
         mov     al, 1
         xor     bh,bh
-        mov     bl, $81          { use last fit }
+        mov     bl, $82          { last fit, try high then low }
         int     $21
 
         mov     ah, $58          { get UMB link state }

From b14c8272dea20c9baa54cb0e42c9e072b24df54c Mon Sep 17 00:00:00 2001
From: Davide Bresolin <bresolin.davide@gmail.com>
Date: Thu, 30 Nov 2023 13:28:52 +0100
Subject: [PATCH 2/3] Create README.md

---
 README.md | 5 +++++
 1 file changed, 5 insertions(+)
 create mode 100644 README.md

diff --git a/README.md b/README.md
new file mode 100644
index 0000000..4315c4f
--- /dev/null
+++ b/README.md
@@ -0,0 +1,5 @@
+# fd-keyb
+FD-KEYB enhances or replaces the BIOS keyboard management to adapt it to international keyboard layouts
+
+**Archived on November 30th, 2023**
+The XT incompatibility has been fixed in FD-KEYB 2.10 (https://gitlab.com/FreeDOS/base/keyb/-/issues/1), hence this repository is not needed anymore.

From 4cf98e66a4a7fe9748625ef8e503b85e1dcbc508 Mon Sep 17 00:00:00 2001
From: Davide Bresolin <bresolin.davide@gmail.com>
Date: Thu, 30 Nov 2023 13:29:34 +0100
Subject: [PATCH 3/3] Update README.md

---
 README.md | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index 4315c4f..e985eb1 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,6 @@
 # fd-keyb
 FD-KEYB enhances or replaces the BIOS keyboard management to adapt it to international keyboard layouts
 
-**Archived on November 30th, 2023**
+### Archived on November 30th, 2023
+
 The XT incompatibility has been fixed in FD-KEYB 2.10 (https://gitlab.com/FreeDOS/base/keyb/-/issues/1), hence this repository is not needed anymore.