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71 lines
1.6 KiB
C++
71 lines
1.6 KiB
C++
//
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// Jasmin.cpp
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// Clock Signal
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//
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// Created by Thomas Harte on 05/01/2020.
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// Copyright © 2020 Thomas Harte. All rights reserved.
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//
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#include "Jasmin.hpp"
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using namespace Oric;
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// NB: there's some controversy here on WD1770 versus WD1772, but between those two I think
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// the only difference is stepping rates, and it says 1770 on the schematic I'm looking at.
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Jasmin::Jasmin() : DiskController(P1770, 8000000) {
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set_is_double_density(true);
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select_paged_item();
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}
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void Jasmin::write(int address, uint8_t value) {
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switch(address) {
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// Set side.
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case 0x3f8:
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for(auto &drive : drives_) {
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if(drive) drive->set_head(value & 1);
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}
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break;
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case 0x3f9:
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/* TODO: reset. */
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break;
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case 0x3fa: {
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// If b0, enable overlay RAM.
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enable_overlay_ram_ = value & 1;
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select_paged_item();
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} break;
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case 0x3fb:
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// If b0, disable BASIC ROM.
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disable_basic_rom_ = value & 1;
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select_paged_item();
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break;
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case 0x3fc: case 0x3fd: case 0x3fe: case 0x3ff: {
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if(drives_[selected_drive_]) drives_[selected_drive_]->set_motor_on(false);
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select_drive(size_t(address - 0x3fc));
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if(drives_[selected_drive_]) drives_[selected_drive_]->set_motor_on(motor_on_);
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} break;
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default:
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return WD::WD1770::write(address, value);
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}
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}
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void Jasmin::set_motor_on(bool on) {
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motor_on_ = on;
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if(drives_[selected_drive_]) drives_[selected_drive_]->set_motor_on(motor_on_);
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if(observer_) {
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observer_->set_led_status("Microdisc", on);
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}
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}
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void Jasmin::set_activity_observer(Activity::Observer *observer) {
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observer_ = observer;
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if(observer) {
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observer->register_led("Jasmin");
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observer_->set_led_status("Jasmin", motor_on_);
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}
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}
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