| Line 61... |
Line 61... |
// unit. As I'm not there yet, it just catches illegal instructions and
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// unit. As I'm not there yet, it just catches illegal instructions and
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// interrupts the CPU on any such instruction--when defined. Otherwise,
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// interrupts the CPU on any such instruction--when defined. Otherwise,
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// illegal instructions are quietly ignored and their behaviour is ...
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// illegal instructions are quietly ignored and their behaviour is ...
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// undefined. (Many get treated like NOOPs ...)
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// undefined. (Many get treated like NOOPs ...)
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//
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//
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// I recommend setting this flag, although it can be taken out if area is
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// I recommend setting this flag so highly, that I'm likely going to remove
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// critical ...
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// the option to turn this off in future versions of this CPU.
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//
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//
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`define OPT_ILLEGAL_INSTRUCTION
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`define OPT_ILLEGAL_INSTRUCTION
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//
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//
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//
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//
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//
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//
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| Line 189... |
Line 189... |
// (The traditional pfcache is also pipelined, whereas the pipeline cache
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// (The traditional pfcache is also pipelined, whereas the pipeline cache
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// implements a windowed approach to caching.)
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// implements a windowed approach to caching.)
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//
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//
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// If you have the fabric to support this option, I recommend including it.
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// If you have the fabric to support this option, I recommend including it.
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//
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//
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`ifdef XULA25
|
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`define OPT_TRADITIONAL_PFCACHE
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`define OPT_TRADITIONAL_PFCACHE
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`endif
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//
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//
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//
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//
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//
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//
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// OPT_EARLY_BRANCHING is an attempt to execute a BRA statement as early
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// OPT_EARLY_BRANCHING is an attempt to execute a BRA statement as early
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// as possible, to avoid as many pipeline stalls on a branch as possible.
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// as possible, to avoid as many pipeline stalls on a branch as possible.
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