6502/CLK
1
0
Fork 0
mirror of https://github.com/TomHarte/CLK.git synced 2024-07-29 16:29:08 +00:00
Code Issues Projects Releases Wiki Activity

Adds the absolute basics to include a 6522 in the Macintosh.

Browse Source 
Not yet wired to anything.
This commit is contained in:
Thomas Harte 2019-05-03 23:40:22 -04:00
parent 417a3e1540
commit 6d6a4e79c9
1 changed files with 23 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

24
Machines/Apple/Macintosh/Macintosh.cpp
View File

@ -27,7 +27,8 @@ class ConcreteMachine:
public: public:
ConcreteMachine(const ROMMachine::ROMFetcher &rom_fetcher) : ConcreteMachine(const ROMMachine::ROMFetcher &rom_fetcher) :
mc68000_(*this), mc68000_(*this),
video_(ram_) { video_(ram_),
via_(via_port_handler_) {
// Grab a copy of the ROM and convert it into big-endian data. // Grab a copy of the ROM and convert it into big-endian data.
const auto roms = rom_fetcher("Macintosh", { "mac128k.rom" }); const auto roms = rom_fetcher("Macintosh", { "mac128k.rom" });
@ -53,9 +54,30 @@ class ConcreteMachine:
mc68000_.run_for(cycles); mc68000_.run_for(cycles);
} }
HalfCycles perform_bus_operation(const CPU::MC68000::Microcycle &cycle, int is_supervisor) {
via_.run_for(cycle.length);
// TODO: the entirety of dealing with this cycle.
return HalfCycles(0);
}
/*
Notes to self: accesses to the VIA are via the 68000's
synchronous bus.
*/
private: private:
class VIAPortHandler: public MOS::MOS6522::PortHandler {
};
CPU::MC68000::Processor<ConcreteMachine, true> mc68000_; CPU::MC68000::Processor<ConcreteMachine, true> mc68000_;
Video video_; Video video_;
MOS::MOS6522::MOS6522<VIAPortHandler> via_;
VIAPortHandler via_port_handler_;
uint16_t rom_[32*1024]; uint16_t rom_[32*1024];
uint16_t ram_[64*1024]; uint16_t ram_[64*1024];
}; };