Register Listing
This information was adapted from the Commodore 128 Programmer's Reference Guide
Register | Hexadecimal | Bit 7 | Bit 6 | Bit 5 | Bit 4 | Bit 3 | Bit 2 | Bit 1 | Bit 0 | Description |
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Horizontal Total |
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Horizontal Displayed |
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Horizontal Sync Position |
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Vertical/Horizontal Sync Width |
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Vertical Total |
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Vertical Adjust |
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Vertical Displayed |
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Vertical Sync Position |
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Interlace Mode |
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Character Total Vertical |
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Cursor Mode, Start Scan |
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Cursor End Scan Line |
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Display Start Address High Byte |
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Display Start Address Low Byte |
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Cursor Position High Byte |
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Cursor Position Low Byte |
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Light Pen Vertical Position |
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Light Pen Horizontal Position |
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Update Address High Byte |
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Update Address Low Byte |
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Attribute Start Address High Byte |
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Attribute Start Address Low Byte |
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Character Total Horizontal, Character Display Horizontal |
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Character Display Vertical |
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Vertical Smooth Scrolling |
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Horizontal Smooth Scrolling |
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Foreground/Background color |
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Address Increment per Row |
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Character Base Address |
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Underline Scan Line |
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Word Count |
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Data Register |
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Block Start Address High Byte |
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Block Start Address Low Byte |
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Display Enable Begin |
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Display Enable End |
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DRAM Refresh Rate |
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SYNC Polarity (undocumented) |
Read more about this topic: MOS Technology 8568
Famous quotes containing the word register:
“Genius ... is the capacity to see ten things where the ordinary man sees one, and where the man of talent sees two or three, plus the ability to register that multiple perception in the material of his art.”
—Ezra Pound (18851972)