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output_port [2016/05/25 12:16] ex_writer |
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| - | ====== Output Ports ====== | ||
| - | ^ Port Number (hex) ^ Equate ^ Function ^ Notes ^ | ||
| - | | 0 | COL0R | Color Register 0 (Right) | | | ||
| - | | 1 | COL1R | Color Register 1 | | | ||
| - | | 2 | COL2R | Color Register 2 | | | ||
| - | | 3 | COL3R | Color Register 3 | | | ||
| - | | 4 | COL0L | Color Register 0 (Left) | | | ||
| - | | 5 | COL1L | Color Register 1 | | | ||
| - | | 6 | COL2L | Color Register 2 | | | ||
| - | | 7 | COL3L | Color Register 3 | | | ||
| - | | 8 | CONCM | Low/High Resolution | Always Low on Astrocade | | ||
| - | | 9 | HORCB | Horizontal Color Boundary (bits 0–6), BG Color (bits 6–7) || | ||
| - | | A | VERBL | Vertical Blank Register | # of vertical lines x 2 to be used for screen update) | | ||
| - | | B | COLBX | Color Block Transfer || | ||
| - | | C | MAGIC | [[Magic Register]] || | ||
| - | | D | INFBK | Interrupt Feedback | 8 bits of vector to be returned by interrupting device upon receipt of INTAK from Z80) | | ||
| - | | E | INMOD | Interrupt Enable and Mode | Always 8 in cartridges | | ||
| - | | F | INLIN | Interrupt Line || | ||
| - | | 10 | TONMO | Tone Master Oscillator || | ||
| - | | 11 | TONEA | Tone A Frequency || | ||
| - | | 12 | TONEB | Tone B Frequency || | ||
| - | | 13 | TONEC | Tone C Frequency || | ||
| - | | 14 | VIBRA | Vibrato/Tremolo || | ||
| - | | 15 | VOLAB |Tone C Volume, Noise Modulation Control || | ||
| - | | 16 | VOLC | Tone A Volume, Tone B Volume || | ||
| - | | 17 | VOLN | Noise Volume || | ||
| - | | 18 | SNDBX | Sound Block Transfer || | ||
| - | | 19 | XPAND | Expander Pixel Definition || | ||
| - | |||
| - | [NM:106, 143, source listing 5] | ||
