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output_port [2016/05/22 18:37]
ex_writer
— (current)
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-====== Output Ports ====== 
  
-^ Port Number (hex) ^ Function ^ Notes ^ 
-| 0 | Color Register 0 (Right) | | 
-| 1 | Color Register 1 | | 
-| 2 | Color Register 2 | | 
-| 3 | Color Register 3 | | 
-| 4 | Color Register 0 (Left) | | 
-| 5 | Color Register 1 | | 
-| 6 | Color Register 2 | | 
-| 7 | Color Register 3 | | 
-| 8 | Low/High Resolution | aka Consumer/​Commercial mode | 
-| 9 | Horizontal Color Boundary, Background Color || 
-| A | Vertical Blank Register || 
-| B | Color Block Transfer || 
-| C | [[Magic Register]] || 
-| D | Interrupt Feedback Register || 
-| E | Interrupt Enable and Mode || 
-| F | Interrupt Line || 
-| 10 | Master Oscillator || 
-| 11 | Tone A Frequency || 
-| 12 | Tone B Frequency || 
-| 13 | Tone C Frequency || 
-| 14 | Vibrato/​Tremolo Register || 
-| 15 | Tone C Volume, Noise Modulation Control || 
-| 16 | Tone A Volume, Tone B Volume || 
-| 17 | Noise Volume || 
-| 18 | Sound Block Transfer || 
-| 19 | Expand Register || 
- 
-[NM:106, 143]