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Adding MUL instruction.

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Russell-S-Harper
2018-08-14 10:19:39 -04:00
parent 61b9ce0b66
commit ae0e509335
3 changed files with 155 additions and 15 deletions
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6
common/common.h
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@@ -58,9 +58,9 @@ _R7 = _R6 + 4
_R8 = _R7 + 4
_R9 = _R8 + 4
_RA = _R9 + 4
_RB = _RA + 4
_RC = _RB + 4 ; workspace for arithmetic operations
_RD = _RC + 4 ; as above and for EXC
_RB = _RA + 4 ; workspace for MUL, DIV, and MOD
_RC = _RB + 4 ; as above
_RD = _RC + 4 ; as above and for ADD, SUB, and EXC
_RE = _RD + 4 ; register E maintains common status
_RF = _RE + 4 ; register F saves/restores processor status