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Implement serial IO, a generic serial device type and external interrupts
author Michael Pavone <pavone@retrodev.com>
date Wed, 10 Feb 2021 20:12:16 -0800
parents 4ace0fef6f8f
children a61b47d5489e
comparison
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2022:380bc5d4a2cf 2025:e7a516f08cec
116 #define BIT_PAL 0x08 116 #define BIT_PAL 0x08
117 #define BIT_MODE_5 0x04 117 #define BIT_MODE_5 0x04
118 #define BIT_SPRITE_SZ 0x02 118 #define BIT_SPRITE_SZ 0x02
119 119
120 //Mode reg 3 120 //Mode reg 3
121 #define BIT_EINT_EN 0x10 121 #define BIT_EINT_EN 0x08
122 #define BIT_VSCROLL 0x04 122 #define BIT_VSCROLL 0x04
123 123
124 //Mode reg 4 124 //Mode reg 4
125 #define BIT_H40 0x01 125 #define BIT_H40 0x01
126 #define BIT_HILIGHT 0x8 126 #define BIT_HILIGHT 0x8