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Code Issues Releases Wiki Activity

Document SVM byte commands better

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This commit is contained in:
Ross Wilson 2016-02-19 12:34:17 +07:00
parent 0b2ac0acfd
commit 7770ff64bc
1 changed files with 9 additions and 11 deletions
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@ -936,17 +936,15 @@ def geninc(code):
Two code fields follow and INC opcode, separated by ','.
Each field may contain:
E | F | [B|D] [+|-] n [+|-] n
E | F | N | R | Axxx | (B|D) (+|-) n (+|-) n
Where 'E' may only be the firstcode in an INC chain, and 'n' must be one
of 0, 1, 2 or 3.
of 0, 1, 2 or 3. xxx is any 8-bit value.
"""
global ShortVectorMode, BeamState
print('geninc: code=%s' % code)
if code[0] == 'A': # make a byte
if code[0] == 'A': # make an SVM byte
code = code[1:]
ShortVectorMode = False
return int(code)
@ -956,17 +954,17 @@ def geninc(code):
elif code[0] == 'D': # beam off
BeamState = 0
return genincfield(code[1:])
elif code[0] == 'E': # enter INC mode
elif code[0] == 'E': # enter SVM mode
if ShortVectorMode:
error('Already in INC mode!?')
ShortVectorMode = True
BeamState = 1
return 0060
elif code[0] == 'F': # exit INC mode
elif code[0] == 'F': # exit SVM, DRJM, ++Xmsb, X&Ylsb<-0
ShortVectorMode = False
BeamState = 0
return 0171
elif code[0] == 'N': # ???
elif code[0] == 'N': # X&Ylsb<-0
if not ShortVectorMode:
error('Not in INC mode!?')
return 0111
@ -974,15 +972,15 @@ def geninc(code):
if not ShortVectorMode:
error('Not in INC mode!?')
return 0200
elif code[0] == 'R': # ???
elif code[0] == 'R': # exit SVM, DRJM, X&Ylsb<-0
if not ShortVectorMode:
error('Not in INC mode!?')
return 0151
elif code[0] == 'X': # ???
elif code[0] == 'X': # Xlsb <- 0
if not ShortVectorMode:
error('Not in INC mode!?')
return 0010
elif code[0] == 'Y': # ???
elif code[0] == 'Y': # Ylsb <- 0
if not ShortVectorMode:
error('Not in INC mode!?')
return 0001