32 lines
2.0 KiB
Markdown
32 lines
2.0 KiB
Markdown
---
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title: "General Concepts"
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summary: "The kernels' general concepts"
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---
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# ASCII extension
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noxos extends ascii to support special characters and commands.
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The extension uses byte blocks in the following form:
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```
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+----------+----------------+-------------------------------+-----------+
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| SHIFT IN | Length of Data | Data | SHIFT OUT |
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| 1 byte | 2 bytes | +---------+-----------------+ | 1 byte |
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| 0x0F | | | Command | Additional Data | | 0x0E |
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| | | +---------+-----------------+ | |
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+----------+----------------+-------------------------------+-----------+
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```
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**Commands:**
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| Name | ID | Data 1 | Data 2 | Data 3 | Data 3 | Status |
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|------------------|------|--------------------------------------------------|--------------|--------------|--------------|--------|
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| `clear` | 0x00 | | | | | N/A |
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| `cursor_move` | 0x01 | direction (left: 0 / right: 1 / up: 2 / down: 3) | num | | | N/A |
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| `cursor_set` | 0x02 | X position | Y position | | | N/A |
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| `color_set` | 0x03 | Red | Green | Blue | | N/A |
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| `color_reset` | 0x04 | | | | | N/A |
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| `render_disable` | 0x05 | X position 1 | Y position 1 | X position 2 | Y position 2 | N/A |
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| `render_enable` | 0x06 | X position 1 | Y position 1 | X position 2 | Y position 2 | N/A |
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| `keyboard_echo` | 0x07 | status (enable: 0 / disable: 1) | | | | N/A |
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