OXYGENHUB
◆ main openmsx / src / memory / RomHolyQuran.cc
1003 B · C++ · last changed chore(): initial commit 1 month ago source blame history raw
e8555c89 Andy McCall 1 
// Holy Qu'ran  cartridge
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//  It is like an ASCII 8KB, but using the 5000h, 5400h, 5800h and 5C00h
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//  addresses.
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#include "RomHolyQuran.hh"
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#include "serialize.hh"
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#include "xrange.hh"
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namespace openmsx {
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RomHolyQuran::RomHolyQuran(const DeviceConfig& config, Rom&& rom_)
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	: Rom8kBBlocks(config, std::move(rom_))
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{
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	reset(EmuTime::dummy());
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}
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void RomHolyQuran::reset(EmuTime /*time*/)
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{
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	setUnmapped(0);
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	setUnmapped(1);
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	for (auto i : xrange(2, 6)) {
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		setRom(i, 0);
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	}
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	setUnmapped(6);
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	setUnmapped(7);
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}
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void RomHolyQuran::writeMem(uint16_t address, byte value, EmuTime /*time*/)
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{
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	// TODO are switch addresses mirrored?
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	if ((0x5000 <= address) && (address < 0x6000)) {
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		byte region = ((address >> 10) & 3) + 2;
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		setRom(region, value);
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	}
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}
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byte* RomHolyQuran::getWriteCacheLine(uint16_t address)
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{
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	if ((0x5000 <= address) && (address < 0x6000)) {
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		return nullptr;
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	} else {
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		return unmappedWrite.data();
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	}
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}
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REGISTER_MSXDEVICE(RomHolyQuran, "RomHolyQuran");
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} // namespace openmsx