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Mesa.mu 24-Jul-81 19:03:01 Page 1
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M E SAM I C ROC 0 D E
Version 41
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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~
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; Get definitions for ALTO and MESA
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#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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