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Add a 'drive in use' indicator LED.

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This commit is contained in:
Thomas Harte 2024-03-25 15:03:54 -04:00
parent 8ba9708942
commit 1154ffd072
3 changed files with 59 additions and 24 deletions
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10
Machines/Acorn/Archimedes/Archimedes.cpp
View File

@ -21,6 +21,8 @@
#include "../../ScanProducer.hpp"
#include "../../TimedMachine.hpp"
#include "../../../Activity/Source.hpp"
#include "../../../InstructionSets/ARM/Disassembler.hpp"
#include "../../../InstructionSets/ARM/Executor.hpp"
#include "../../../Outputs/Log.hpp"
@ -44,7 +46,8 @@ class ConcreteMachine:
public MachineTypes::MappedKeyboardMachine,
public MachineTypes::MediaTarget,
public MachineTypes::TimedMachine,
public MachineTypes::ScanProducer
public MachineTypes::ScanProducer,
public Activity::Source
{
private:
// TODO: pick a sensible clock rate; this is just code for '24 MIPS, please'.
@ -265,6 +268,11 @@ class ConcreteMachine:
return false;
}
// MARK: - Activity::Source.
void set_activity_observer(Activity::Observer *observer) final {
executor_.bus.set_activity_observer(observer);
}
// MARK: - MappedKeyboardMachine.
MappedKeyboardMachine::KeyboardMapper *get_keyboard_mapper() override {
return &keyboard_mapper_;

63
Machines/Acorn/Archimedes/InputOutputController.hpp
View File

@ -8,13 +8,13 @@
#pragma once
#include "../../../Outputs/Log.hpp"
#include "CMOSRAM.hpp"
#include "Keyboard.hpp"
#include "Sound.hpp"
#include "Video.hpp"
#include "../../../Outputs/Log.hpp"
#include "../../../Activity/Observer.hpp"
namespace Archimedes {
@ -245,7 +245,7 @@ struct InputOutputController {
}
template <typename IntT>
bool write(uint32_t address, IntT value) {
bool write(uint32_t address, IntT bus_value) {
const Address target(address);
// Empirically, RISC OS 3.19:
@ -266,19 +266,19 @@ struct InputOutputController {
switch(target.bank) {
default:
logger.error().append("Unrecognised IOC write of %02x to %08x i.e. bank %d / type %d", value, address, target.bank, target.type);
logger.error().append("Unrecognised IOC write of %02x to %08x i.e. bank %d / type %d", bus_value, address, target.bank, target.type);
break;
// Bank 0: internal registers.
case 0:
switch(target.offset) {
default:
logger.error().append("Unrecognised IOC bank 0 write; %02x to offset %02x", value, target.offset);
logger.error().append("Unrecognised IOC bank 0 write; %02x to offset %02x", bus_value, target.offset);
break;
case 0x00:
control_ = byte(value);
i2c_.set_clock_data(!(value & 2), !(value & 1));
control_ = byte(bus_value);
i2c_.set_clock_data(!(bus_value & 2), !(bus_value & 1));
// Per the A500 documentation:
// b7: vertical sync/test input bit, so should be programmed high;
@ -291,7 +291,7 @@ struct InputOutputController {
break;
case 0x04:
serial_.output(IOCParty, byte(value));
serial_.output(IOCParty, byte(bus_value));
irq_b_.clear(IRQB::KeyboardTransmitEmpty);
observer_.update_interrupts();
break;
@ -302,25 +302,25 @@ struct InputOutputController {
// b4: clear POR.
// b5: clear TM[0].
// b6: clear TM[1].
irq_a_.clear(byte(value) & 0x7c);
irq_a_.clear(byte(bus_value) & 0x7c);
observer_.update_interrupts();
break;
// Interrupts.
case 0x18: irq_a_.mask = byte(value); break;
case 0x28: irq_b_.mask = byte(value); break;
case 0x38: fiq_.mask = byte(value); break;
case 0x18: irq_a_.mask = byte(bus_value); break;
case 0x28: irq_b_.mask = byte(bus_value); break;
case 0x38: fiq_.mask = byte(bus_value); break;
// Counters.
case 0x40: case 0x50: case 0x60: case 0x70:
counters_[(target.offset >> 4) - 0x4].reload = uint16_t(
(counters_[(target.offset >> 4) - 0x4].reload & 0xff00) | byte(value)
(counters_[(target.offset >> 4) - 0x4].reload & 0xff00) | byte(bus_value)
);
break;
case 0x44: case 0x54: case 0x64: case 0x74:
counters_[(target.offset >> 4) - 0x4].reload = uint16_t(
(counters_[(target.offset >> 4) - 0x4].reload & 0x00ff) | (byte(value) << 8)
(counters_[(target.offset >> 4) - 0x4].reload & 0x00ff) | (byte(bus_value) << 8)
);
break;
@ -338,29 +338,39 @@ struct InputOutputController {
case 5:
switch(target.type) {
default:
logger.error().append("Unrecognised IOC bank 5 type %d write; %02x to offset %02x", target.type, value, target.offset);
logger.error().append("Unrecognised IOC bank 5 type %d write; %02x to offset %02x", target.type, bus_value, target.offset);
break;
case Address::Type::Fast:
switch(target.offset) {
default:
logger.error().append("Unrecognised IOC fast bank 5 write; %02x to offset %02x", value, target.offset);
logger.error().append("Unrecognised IOC fast bank 5 write; %02x to offset %02x", bus_value, target.offset);
break;
case 0x00:
logger.error().append("TODO: printer data write; %02x", byte(value));
logger.error().append("TODO: printer data write; %02x", byte(bus_value));
break;
case 0x18:
logger.error().append("TODO: latch B write; %02x", byte(value));
logger.error().append("TODO: latch B write; %02x", byte(bus_value));
break;
case 0x40:
logger.error().append("TODO: latch A write; %02x", byte(value));
break;
case 0x40: {
const uint8_t value = byte(bus_value);
logger.error().append("TODO: latch A write; %02x", value);
// Set the floppy indicator on if any drive is selected,
// because this emulator is compressing them all into a
// single LED, and the machine has indicated 'in use'.
if(activity_observer_) {
activity_observer_->set_led_status(FloppyActivityLED,
!(value & 0x40) && ((value & 0xf) != 0xf)
);
}
} break;
case 0x48:
logger.error().append("TODO: latch C write; %02x", byte(value));
logger.error().append("TODO: latch C write; %02x", byte(bus_value));
break;
}
break;
@ -453,9 +463,18 @@ struct InputOutputController {
observer_.update_interrupts();
}
void set_activity_observer(Activity::Observer *observer) {
activity_observer_ = observer;
if(activity_observer_) {
activity_observer_->register_led(FloppyActivityLED);
}
}
private:
Log::Logger<Log::Source::ARMIOC> logger;
InterruptObserverT &observer_;
Activity::Observer *activity_observer_ = nullptr;
static inline const std::string FloppyActivityLED = "Drive";
// IRQA, IRQB and FIQ states.
struct Interrupt {

8
Machines/Acorn/Archimedes/MemoryController.hpp
View File

@ -14,6 +14,7 @@
#include "../../../InstructionSets/ARM/Registers.hpp"
#include "../../../Outputs/Log.hpp"
#include "../../../Activity/Observer.hpp"
namespace Archimedes {
@ -183,6 +184,9 @@ struct MemoryController {
return true;
}
//
// Expose various IOC-owned things.
//
void tick_timers() { ioc_.tick_timers(); }
auto &sound() { return ioc_.sound(); }
@ -192,6 +196,10 @@ struct MemoryController {
auto &keyboard() { return ioc_.keyboard(); }
const auto &keyboard() const { return ioc_.keyboard(); }
void set_activity_observer(Activity::Observer *observer) {
ioc_.set_activity_observer(observer);
}
private:
Log::Logger<Log::Source::ARMIOC> logger;