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Add a little pin documentation to the 6809 processor.
Signed-off-by: Adrian Conlon <Adrian.conlon@gmail.com>
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@ -77,6 +77,17 @@ namespace EightBit {
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PinLevel& NMI() { return m_nmiLine; } // In
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PinLevel& FIRQ() { return m_firqLine; } // In
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// |---------------|-----------------------------------|
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// | MPU State | |
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// |_______________| MPU State Definition |
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// | BA | BS | |
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// |_______|_______|___________________________________|
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// | 0 | 0 | Normal (running) |
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// | 0 | 1 | Interrupt or RESET Acknowledge |
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// | 1 | 0 | SYNC Acknowledge |
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// | 1 | 1 | HALT Acknowledge |
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// |-------|-------|-----------------------------------|
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PinLevel& BA() { return m_baLine; } // Out
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PinLevel& BS() { return m_bsLine; } // Out
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