Service Manuals, User Guides, Schematic Diagrams or docs for : xerox mesa 6.0 microcode Mesa_41_Microcode_Jul81

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Mesa.mu                                24-Jul-81 19:03:01                          Page   1



.----------------------------------------~------------ ----------_ .. ,
,                                                                      "

                M E SAM I C ROC 0 D E
                      Version 41
,--------------------------------------------------------------_ .. _.,
,

  Mesa.Mu - Instruction fetch and general subroutines
  Last modified by Johnsson - July 20, 1979 8:42 AM
  addresses changed for RAM operation, Johnsson November 5, 1979       4:05   P~


._----------------------------------------------------------------
,
; Get definitions for ALTO and MESA
,
.-----------------------------------~----------------- -----------,.

#AltoConsts23.mu;
#Mesab.mu;

  'uCodeVersion' is used by RunMesa tc determine w~at version of the
  Mesa microcode is in ROM1. This version number should be incremented
  by 1 for every official release of the microcode. 'uCodeVersion' is
  mapped by RunMesa to the actual version number (which appear~ as a
  comment above). The reason for this mapping is th~ 1 imited number
  of constants in the Alto constants ROM, otherwise. we would cbviousl~
  have assigned 'uCodeVersion' the true microcode version number.    .
  The current table in RunMesa should have the following corre3:>ondel'ces:
   uCodeVersion   Microcode version   Mesa release
        o               34              4.1
        1               39              5.0
          2              41               6.0
$uCodeVersion   $2;
;Completely rewritten by Roy Levin, Sept-Oct. 1977
;Modified by Johnsson; July 25, 1977 10:20 AM
;First version assembled 5 June 1975.
;Developed from Lampson's MESA.U of 21 March 1975.
Mesa.mu                                                                24-Jul-B1 19:03:01                                    Page   2



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; GLOBAL CONVENTIONS AND ASSUMPTIONS
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