Differences
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hardware:i_o_ports [2016/06/11 12:10] ex_writer |
hardware:i_o_ports [2016/06/13 23:20] (current) ex_writer [Input/Output Ports] |
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| 8H | CONCM | Consumer/Commercial mode | INTST | [[hardware:magic system#intercept|Intercept]] Status Feedback | | | 8H | CONCM | Consumer/Commercial mode | INTST | [[hardware:magic system#intercept|Intercept]] Status Feedback | | ||
| 9H | HORCB | [[hardware:color#frame color|Frame color]], [[hardware:color#horizontal color boundary|Horizontal Color Boundary]] | | | | | 9H | HORCB | [[hardware:color#frame color|Frame color]], [[hardware:color#horizontal color boundary|Horizontal Color Boundary]] | | | | ||
- | | AH | VERBL | Vertical Blank Register | | | | + | | AH | VERBL | Vertical Blanking Line | | | |
| BH | COLBX | Color Block Transfer | | | | | BH | COLBX | Color Block Transfer | | | | ||
| CH | MAGIC | [[hardware:magic system#magic register|Magic Register]] | | | | | CH | MAGIC | [[hardware:magic system#magic register|Magic Register]] | | | | ||
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| 12H | TONEB | Tone B Frequency | SW2 | Player 3 Control Handle | | | 12H | TONEB | Tone B Frequency | SW2 | Player 3 Control Handle | | ||
| 13H | TONEC | Tone C Frequency | SW3 | Player 4 Control Handle | | | 13H | TONEC | Tone C Frequency | SW3 | Player 4 Control Handle | | ||
- | | 14H | VIBRA | Vibrato/Tremolo | KEY0 | Keypad Column 0 (right) | | + | | 14H | VIBRA | Vibrato Speed/Depth | KEY0 | Keypad Column 0 (right) | |
- | | 15H | VOLAB |Tone C Volume, Noise Modulation Control | KEY1 | Keypad Column 1 | | + | | 15H | VOLC | Modulation Type (Noise/Vibrato), Tone C Volume | KEY1 | Keypad Column 1 | |
- | | 16H | VOLC | Tone A Volume, Tone B Volume | KEY2 | Keypad Column 2 | | + | | 16H | VOLAB | Tone B Volume, Tone A Volume | KEY2 | Keypad Column 2 | |
| 17H | VOLN | Noise Volume | KEY3 | Keypad Column 3 (left) | | | 17H | VOLN | Noise Volume | KEY3 | Keypad Column 3 (left) | | ||
| 18H | SNDBX | Sound Block Transfer | | | | | 18H | SNDBX | Sound Block Transfer | | | | ||
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Interrupt Line/Horizontal Address Feedback. On write, this register sets the scan line number on which to generate a line interrupt back to the Z80. On read, this register contains the horizontal address (i.e., position in the line) that a Light Pen Interrupt was received on. | Interrupt Line/Horizontal Address Feedback. On write, this register sets the scan line number on which to generate a line interrupt back to the Z80. On read, this register contains the horizontal address (i.e., position in the line) that a Light Pen Interrupt was received on. | ||
+ | ==== TONMO / SW0 ($10) ==== | ||
+ | |||
+ | TONMO is the "tone" (i.e., frequency) of the [[hardware:music processor#master oscillator]]. | ||
+ | |||
+ | SW0 | ||
==== XPAND ($19) ==== | ==== XPAND ($19) ==== | ||