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CLK/Components/9918/Implementation/PersonalityTraits.hpp
2023-04-23 12:08:07 -04:00

51 lines
1.1 KiB
C++

//
// PersonalityTraits.hpp
// Clock Signal
//
// Created by Thomas Harte on 06/01/2023.
// Copyright © 2023 Thomas Harte. All rights reserved.
//
#ifndef PersonalityTraits_hpp
#define PersonalityTraits_hpp
namespace TI::TMS {
// Genus determinants for the various personalityes.
constexpr bool is_sega_vdp(Personality p) {
return p >= Personality::SMSVDP;
}
constexpr bool is_yamaha_vdp(Personality p) {
return p == Personality::V9938 || p == Personality::V9958;
}
// i.e. one with the original internal timings.
constexpr bool is_classic_vdp(Personality p) {
return
p == Personality::TMS9918A ||
p == Personality::SMSVDP ||
p == Personality::SMS2VDP ||
p == Personality::GGVDP;
}
constexpr size_t memory_size(Personality p) {
switch(p) {
case TI::TMS::TMS9918A:
case TI::TMS::SMSVDP:
case TI::TMS::SMS2VDP:
case TI::TMS::GGVDP: return 16 * 1024;
case TI::TMS::MDVDP: return 64 * 1024;
case TI::TMS::V9938: return 128 * 1024;
case TI::TMS::V9958: return 192 * 1024;
}
}
constexpr size_t memory_mask(Personality p) {
return memory_size(p) - 1;
}
}
#endif /* PersonalityTraits_hpp */