Add ordos.sys

README

@@ -16,6 +16,8 @@ edlin.com    ms-dos  v1.25/bin/EDLIN.COM
 exe2bin.exe  ms-dos  v1.25/bin/EXE2BIN.EXE
 link.exe     ms-dos  v1.25/bin/LINK.EXE
 masm.exe     ms-dos  v2.0/bin/MASM.EXE
+msdos.asm    ms-dos  v1.25/source/MSDOS.ASM
+stddos.asm   ms-dos  v1.25/source/STDDOS.ASM
 
 Notes
 -----

build.bat

@@ -1,3 +1,7 @@
 masm command;
 link command;
 exe2bin command.exe command.com
+
+masm stddos;
+link stddos;
+exe2bin stddos.exe ordos.sys

clean.bat

@@ -1,3 +1,7 @@
 del command.obj
 del command.exe
 del command.com
+
+del stddos.obj
+del stddos.exe
+del ordos.sys

stddos.asm

@@ -0,0 +1,22 @@
+	TITLE	MS-DOS version 1.25 by Tim Paterson     March 3, 1982
+	PAGE	60,132
+; Use the following booleans to set the switches 
+FALSE	EQU	0
+TRUE	EQU	NOT FALSE
+
+; Use the switches below to produce the standard Microsoft version of the IBM
+; version of the operating system
+MSVER	EQU	FALSE
+IBM	EQU	TRUE
+
+; Set this switch to cause DOS to move itself to the end of memory
+HIGHMEM	EQU	FALSE
+
+; Turn on switch below to allow testing disk code with DEBUG. It sets
+; up a different stack for disk I/O (functions > 11) than that used for
+; character I/O which effectively makes the DOS re-entrant.
+
+DSKTEST	EQU	FALSE
+
+	INCLUDE	MSDOS.ASM
+