small edit to fix usage document, ensure only 8086 compatible instructions used

git-svn-id: http://svn.code.sf.net/p/fdos/code/trunk@143 d9247ac3-808d-4053-b241-f1a6b6229609

Author: PerditionC

devload.asm

@@ -195,6 +195,7 @@
 ; Version 3.25 05/8/2011 - Jeremy: fix bug where initial CDS not checked,
 ;                          adjust return codes to account for char devices
 
+CPU 8086                        ; ensure only 8086 compatible instructions
 ; .............................IMPROVEMENT IDEAS.............................
 
 
@@ -2029,8 +2030,8 @@ quiet:          or      byte [cs:ModeFlag],QuietFlag
 
         ; Set initial drive letter to assign device to (or 1st available after this one)
 driveletter:
-                lodsb           ; get drive letter, spaces before it are not supported e.g. /DS
-                sub     al,65   ; convert letter to 0 based #, cmd line upcased above so -'A'
+                lodsb                   ; get drive letter, spaces before it are not supported e.g. /DS
+                sub     al,65           ; convert letter to 0 based #, cmd line upcased above so -'A'
                 mov     [CS:LastDrUsed], al
                 jmp     short switchloop
 

devload.txt

@@ -77,9 +77,8 @@
       to a value between 0 and 26, where 0 is returned for character
       devices and for block devices the first assigned drive is
       returned (where 1=A:, 2=B:, 3=C:, ... 26=Z:).  On any error
-      or is device is not loaded then 255 is returned.  [Future
+      or if device is not loaded then 255 is returned.  [Future
       versions may provide unique values depending on the error.]
-      is returned as the exit code, where A:=0, ... Z:=25.  
 
     Examples: