megadrive_test2

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added NTSC/PAL detection
author John Tsiombikas <nuclear@member.fsf.org>
date Wed, 21 Jun 2017 06:32:10 +0300
parents
children 108ecc582a11
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1 #ifndef MEGADRIVE_IO_H_
2 #define MEGADRIVE_IO_H_
3
4 #define IO_REG_VER *((volatile uint8_t*)0xa10001)
5
6 enum {
7 IO_VER_VERSION_MASK = 0x0f,
8 IO_VER_EXP = 0x20,
9 IO_VER_PAL = 0x40,
10 IO_VER_NONJP = 0x80
11 };
12
13 #endif /* MEGADRIVE_IO_H_ */