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Adjusted slightly as per Z80 change, and to pull everything internally declared into the Amstrad CPC namespace.

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This commit is contained in:
Thomas Harte 2017-08-02 22:11:03 -04:00
parent 039811ce6a
commit 42e70ef993
1 changed files with 13 additions and 6 deletions
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19
Machines/AmstradCPC/AmstradCPC.cpp
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@ -16,7 +16,7 @@
#include "../../Storage/Tape/Tape.hpp"
using namespace AmstradCPC;
namespace AmstradCPC {
/*!
Models the CPC's interrupt timer. Inputs are vsync, hsync, interrupt acknowledge and reset, and its output
@ -478,10 +478,11 @@ class i8255PortHandler : public Intel::i8255::PortHandler {
The actual Amstrad CPC implementation; tying the 8255, 6845 and AY to the Z80.
*/
class ConcreteMachine:
public CPU::Z80::Processor<ConcreteMachine>,
public CPU::Z80::BusHandler,
public Machine {
public:
ConcreteMachine() :
z80_(*this),
crtc_counter_(HalfCycles(4)), // This starts the CRTC exactly out of phase with the memory accesses
crtc_(crtc_bus_handler_),
crtc_bus_handler_(ram_, interrupt_timer_),
@ -496,7 +497,7 @@ class ConcreteMachine:
inline HalfCycles perform_machine_cycle(const CPU::Z80::PartialMachineCycle &cycle) {
// Amstrad CPC timing scheme: assert WAIT for three out of four cycles
clock_offset_ = (clock_offset_ + cycle.length) & HalfCycles(7);
set_wait_line(clock_offset_ >= HalfCycles(2));
z80_.set_wait_line(clock_offset_ >= HalfCycles(2));
// Update the CRTC once every eight half cycles; aiming for half-cycle 4 as
// per the initial seed to the crtc_counter_, but any time in the final four
@ -505,7 +506,7 @@ class ConcreteMachine:
crtc_counter_ += cycle.length;
int crtc_cycles = crtc_counter_.divide(HalfCycles(8)).as_int();
if(crtc_cycles) crtc_.run_for(Cycles(1));
set_interrupt_line(interrupt_timer_.get_request());
z80_.set_interrupt_line(interrupt_timer_.get_request());
// TODO (in the player, not here): adapt it to accept an input clock rate and
// run_for as HalfCycles
@ -629,7 +630,7 @@ class ConcreteMachine:
/// Wires virtual-dispatched CRTMachine run_for requests to the static Z80 method.
void run_for(const Cycles cycles) {
CPU::Z80::Processor<ConcreteMachine>::run_for(cycles);
z80_.run_for(cycles);
}
/// The ConfigurationTarget entry point; should configure this meachine as described by @c target.
@ -674,6 +675,8 @@ class ConcreteMachine:
}
private:
CPU::Z80::Processor<ConcreteMachine> z80_;
CRTCBusHandler crtc_bus_handler_;
Motorola::CRTC::CRTC6845<CRTCBusHandler> crtc_;
@ -697,7 +700,11 @@ class ConcreteMachine:
KeyboardState key_state_;
};
}
using namespace AmstradCPC;
// See header; constructs and returns an instance of the Amstrad CPC.
Machine *Machine::AmstradCPC() {
return new ConcreteMachine;
return new AmstradCPC::ConcreteMachine;
}