game folder "just" compiles (not link)

libs/doserr.asm

@@ -0,0 +1,76 @@
+.model small
+.386
+
+_DATA   segment byte public 'DATA' use32
+public _call_proc
+_call_proc      dd      ?
+old_stack       dd      ?
+old_stack_seg   dw      ?
+new_stack_pos   dd      ?
+new_stack_seg   dw      ?
+
+_DATA   ends
+
+DGROUP group _DATA
+_TEXT   segment byte public 'CODE' use32
+        assume CS:_TEXT
+        assume DS:DGROUP
+
+
+extern _dos_setvect_:proc
+extern __GETDS:proc
+
+public dos_int24_
+
+dos_int24_:cld
+           push ds
+           call __GETDS
+           mov  old_stack,esp
+           mov  old_stack_seg,ss
+           lss  esp,new_stack_pos
+           push es
+           push fs
+           push gs
+           push ebx
+           push ecx
+           push edx
+           push edi
+           push esi
+           push ebp
+           mov  ax,ds
+           mov  es,ax
+           mov  fs,ax
+           mov  gs,ax
+           mov  dl,ah
+           mov  bl,al
+           mov  eax,edi
+           call _call_proc
+           pop  ebp
+           pop  esi
+           pop  edi
+           pop  edx
+           pop  ecx
+           pop  ebx
+           pop  gs
+           pop  fs
+           pop  es
+           lss  esp,old_stack
+           pop  ds
+           iretd
+
+
+public install_dos_error_
+
+;eax - procedura
+;edx - stack
+install_dos_error_:
+        mov     _call_proc,eax
+        mov     new_stack_pos,edx
+        mov     new_stack_seg,ss
+        mov     ebx,offset dos_int24_
+        mov     cx,cs
+        mov     eax,24h
+        call    _dos_setvect_
+        ret
+_TEXT ends
+End