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Stubs in a speed register.

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This commit is contained in:
Thomas Harte 2020-10-28 21:23:45 -04:00
parent 1df2ce513a
commit 885fae1534
1 changed files with 16 additions and 1 deletions
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17
Machines/Apple/AppleIIgs/AppleIIgs.cpp
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@ -69,6 +69,9 @@ class ConcreteMachine:
ram_.resize(ram_size * 1024);
memory_.set_storage(ram_, rom_);
// Sync up initial values.
memory_.set_speed_register(speed_register_);
}
void run_for(const Cycles cycles) override {
@ -99,6 +102,17 @@ class ConcreteMachine:
}
break;
// Speed register.
case 0xc036:
if(isReadOperation(operation)) {
*value = speed_register_;
} else {
memory_.set_speed_register(*value);
speed_register_ = *value;
printf("[Unimplemented] most of speed register: %02x\n", *value);
}
break;
default:
// TODO: all other IO accesses.
printf("Unhandled IO: %04x\n", address);
@ -136,9 +150,10 @@ class ConcreteMachine:
int fast_access_phase_ = 0;
int slow_access_phase_ = 0;
uint8_t speed_register_ = 0x00;
// MARK: - Memory storage.
// Actual memory storage.
std::vector<uint8_t> ram_;
std::vector<uint8_t> rom_;
};