RomZemina80in1.cc

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// Zemina 80-in-1 cartridge
//
// Information obtained by studying MESS sources:
//   0x4000 : 0x4000-0x5FFF
//   0x4001 : 0x6000-0x7FFF
//   0x4002 : 0x8000-0x9FFF
//   0x4003 : 0xA000-0xBFFF
 
#include "RomZemina80in1.hh"
#include "CacheLine.hh"
#include "serialize.hh"
#include "xrange.hh"
 
namespace openmsx {
 
RomZemina80in1::RomZemina80in1(const DeviceConfig& config, Rom&& rom_)
        : Rom8kBBlocks(config, std::move(rom_))
{
        reset(EmuTime::dummy());
}
 
void RomZemina80in1::reset(EmuTime::param /*time*/)
{
        setUnmapped(0);
        setUnmapped(1);
        for (auto i : xrange(2, 6)) {
                setRom(i, i - 2);
        }
        setUnmapped(6);
        setUnmapped(7);
}
 
void RomZemina80in1::writeMem(word address, byte value, EmuTime::param /*time*/)
{
        if ((0x4000 <= address) && (address < 0x4004)) {
                setRom(2 + (address - 0x4000), value);
        }
}
 
byte* RomZemina80in1::getWriteCacheLine(word address)
{
        if (address == (0x4000 & CacheLine::HIGH)) {
                return nullptr;
        } else {
                return unmappedWrite.data();
        }
}
 
REGISTER_MSXDEVICE(RomZemina80in1, "RomZemina80in1");
 
} // namespace openmsx