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comparison cpu_dsl.py @ 1733:1f0a86f5e055

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Implemented LDI in new Z80 core
author Michael Pavone <pavone@retrodev.com>
date Sat, 02 Feb 2019 23:02:19 -0800
parents b0e01e64d76d
children 88fbc4e711fd
comparison
equal deleted inserted replaced
1732:3b286be82ea5 1733:1f0a86f5e055
871 if prog.lastOp.op == 'cmp': 871 if prog.lastOp.op == 'cmp':
872 output.pop() 872 output.pop()
873 params = [prog.resolveParam(p, parent, fieldVals) for p in prog.lastOp.params] 873 params = [prog.resolveParam(p, parent, fieldVals) for p in prog.lastOp.params]
874 return '\n\tif ({a} >= {b}) '.format(a=params[1], b = params[0]) + '{' 874 return '\n\tif ({a} >= {b}) '.format(a=params[1], b = params[0]) + '{'
875 else: 875 else:
876 raise ion(">=U not implemented in the general case yet") 876 raise Exception(">=U not implemented in the general case yet")
877
878 def _eqCImpl(prog, parent, fieldVals, output):
879 return '\n\tif (!{a}) {'.format(a=prog.resolveParam(prog.lastDst, None, {}))
880
881 def _neqCImpl(prog, parent, fieldVals, output):
882 return '\n\tif ({a}) {'.format(a=prog.resolveParam(prog.lastDst, None, {}))
877 883
878 _ifCmpImpl = { 884 _ifCmpImpl = {
879 'c': { 885 'c': {
880 '>=U': _geuCImpl 886 '>=U': _geuCImpl,
887 '=': _eqCImpl,
888 '!=': _neqCImpl
881 } 889 }
882 } 890 }
883 #represents a DSL conditional construct 891 #represents a DSL conditional construct
884 class If(ChildBlock): 892 class If(ChildBlock):
885 def __init__(self, parent, cond): 893 def __init__(self, parent, cond):