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This location is used for attribute preservation by the routines at 29272 and 31688. It is also the MASK P system variable.
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| 23694 | DEFB 0 | |||
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This location is used for attribute storage by various routines. It is also the ATTR T system variable which is used by the ROM routines to plot pixels and draw lines.
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| 23695 | DEFB 0 | |||
| 23696 | DEFB 0 | |||
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