6502/CLK
1
0
Fork 0
mirror of https://github.com/TomHarte/CLK.git synced 2024-10-02 19:54:35 +00:00
Code Issues Projects Releases Wiki Activity

Corrects non-recurring-pattern adaptation bug: the 'SerialPortVIA' should keep a reference to its VIA, not a copy of it.

Browse Source
This commit is contained in:
Thomas Harte 2017-09-05 21:19:56 -04:00
parent 8eeb7e73cd
commit 3b12fca417
2 changed files with 24 additions and 19 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

41
Machines/Commodore/1540/Implementation/C1540.cpp
View File

@ -55,8 +55,9 @@ Cycles MachineBase::perform_bus_operation(CPU::MOS6502::BusOperation operation,
else
ram_[address] = *value;
} else if(address >= 0xc000) {
if(isReadOperation(operation))
if(isReadOperation(operation)) {
*value = rom_[address & 0x3fff];
}
} else if(address >= 0x1800 && address <= 0x180f) {
if(isReadOperation(operation))
*value = serial_port_VIA_.get_register(address);
@ -160,6 +161,8 @@ void SerialPortVIA::set_port_output(MOS::MOS6522::Port port, uint8_t value, uint
}
void SerialPortVIA::set_serial_line_state(::Commodore::Serial::Line line, bool value) {
// printf("[C1540] %s is %s\n", StringForLine(line), value ? "high" : "low");
switch(line) {
default: break;
case ::Commodore::Serial::Line::Data: port_b_ = (port_b_ & ~0x01) | (value ? 0x00 : 0x01); break;
@ -223,25 +226,27 @@ void DriveVIA::set_control_line_output(MOS::MOS6522::Port port, MOS::MOS6522::Li
void DriveVIA::set_port_output(MOS::MOS6522::Port port, uint8_t value, uint8_t direction_mask) {
if(port) {
// record drive motor state
drive_motor_ = !!(value&4);
if(previous_port_b_output_ != value) {
// record drive motor state
drive_motor_ = !!(value&4);
// check for a head step
int step_difference = ((value&3) - (previous_port_b_output_&3))&3;
if(step_difference) {
if(delegate_) delegate_->drive_via_did_step_head(this, (step_difference == 1) ? 1 : -1);
// check for a head step
int step_difference = ((value&3) - (previous_port_b_output_&3))&3;
if(step_difference) {
if(delegate_) delegate_->drive_via_did_step_head(this, (step_difference == 1) ? 1 : -1);
}
// check for a change in density
int density_difference = (previous_port_b_output_^value) & (3 << 5);
if(density_difference && delegate_) {
delegate_->drive_via_did_set_data_density(this, (value >> 5)&3);
}
// TODO: something with the drive LED
// printf("LED: %s\n", value&8 ? "On" : "Off");
previous_port_b_output_ = value;
}
// check for a change in density
int density_difference = (previous_port_b_output_^value) & (3 << 5);
if(density_difference && delegate_) {
delegate_->drive_via_did_set_data_density(this, (value >> 5)&3);
}
// TODO: something with the drive LED
// printf("LED: %s\n", value&8 ? "On" : "Off");
previous_port_b_output_ = value;
}
}

2
Machines/Commodore/1540/Implementation/C1540Base.hpp
View File

@ -48,7 +48,7 @@ class SerialPortVIA: public MOS::MOS6522::IRQDelegatePortHandler {
void set_serial_port(const std::shared_ptr<::Commodore::Serial::Port> &);
private:
MOS::MOS6522::MOS6522<SerialPortVIA> via_;
MOS::MOS6522::MOS6522<SerialPortVIA> &via_;
uint8_t port_b_;
std::weak_ptr<::Commodore::Serial::Port> serial_port_;
bool attention_acknowledge_level_, attention_level_input_, data_level_output_;