OXYGENHUB
◆ main openmsx / src / memory / RomZemina80in1.cc
1.0 KiB · C++ · last changed chore(): initial commit 1 month ago source blame history raw
e8555c89 Andy McCall 1 
// Zemina 80-in-1 cartridge
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//
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// Information obtained by studying MESS sources:
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//   0x4000 : 0x4000-0x5FFF
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//   0x4001 : 0x6000-0x7FFF
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//   0x4002 : 0x8000-0x9FFF
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//   0x4003 : 0xA000-0xBFFF
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#include "RomZemina80in1.hh"
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#include "CacheLine.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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RomZemina80in1::RomZemina80in1(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 RomZemina80in1::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, i - 2);
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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 RomZemina80in1::writeMem(uint16_t address, byte value, EmuTime /*time*/)
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{
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	if ((0x4000 <= address) && (address < 0x4004)) {
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		setRom(2 + (address - 0x4000), value);
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	}
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}
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byte* RomZemina80in1::getWriteCacheLine(uint16_t address)
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{
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	if (address == (0x4000 & CacheLine::HIGH)) {
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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(RomZemina80in1, "RomZemina80in1");
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} // namespace openmsx