AST RESEARCH TECHNICAL BULLETIN TB-0031                   7-17-84


          AST MONOGRAPHPLUS TECHNICAL REFERENCE MANUAL


In Table 4-1 that is located on page 4-2 of Technical Reference  Manual 
(part  no.  000127-002A) there are some corrections necessary under the 
column "Graphics Mode".   A "change page" has recently been distributed 
to  make  corrections,  but it also contains one error  in  the  table.  
Listed below is the corrected table.


                Table 4-1 CRTC Internal Registers

Register                           Text Mode  Graphics Mode
 Number     Parameter          (decimal/hex)  (decimal hex)    Units

  :00       Horizontal total          97/:61  56/:38         Characters
  :01       Horizontal display        80/:50  42/:2D         Characters
  :02       HSync position            82/:52  48/:30         Characters
  :03       HSync width               15/:0F  08/:08         Characters
  :04       Vertical total            25/:19  90/:5A         Rows
  :05       Vertical adjust           06/:06  00/:00         Lines
  :06       Vertical displayed        25/:19  87/:57         Rows
  :07       VSync position            25/:19  87/:57         Rows
  :08       Interlace mode            02/:02  02/:02         -----
  :09       Maximum scan 
            line                      13/:0D  03/:03         Lines
            address
  :0A       Cursor start line         11/:0B  00/:00         Lines
  :0B       Cursor end line           12/:0C  00/:00         Lines
  :0C       Screen start              00/:00  00/:00         -----
            address (high)
  :0D       Screen start              00/:00  00/:00         -----
            address (low)
  :0E       Cursor address            00/:00  00/:00         -----
            (high)
  :0F       Cursor address            00/:00  32/:20         -----
            (low)
  :10       Reserved                  ------  ------         -----
  :11       Reserved                  ------  ------         -----