mirror of
https://github.com/TomHarte/CLK.git
synced 2024-07-26 11:29:09 +00:00
65 lines
1.6 KiB
C++
65 lines
1.6 KiB
C++
//
|
|
// MacintoshVolume.cpp
|
|
// Clock Signal
|
|
//
|
|
// Created by Thomas Harte on 25/08/2019.
|
|
// Copyright © 2019 Thomas Harte. All rights reserved.
|
|
//
|
|
|
|
#include "MacintoshVolume.hpp"
|
|
|
|
using namespace Storage::MassStorage::Encodings::Macintosh;
|
|
|
|
void Mapper::set_drive_type(DriveType drive_type, size_t number_of_blocks) {
|
|
drive_type_ = drive_type;
|
|
number_of_blocks_ = number_of_blocks;
|
|
}
|
|
|
|
size_t Mapper::get_number_of_blocks() {
|
|
return number_of_blocks_ + 5;
|
|
}
|
|
|
|
ssize_t Mapper::to_source_address(size_t address) {
|
|
/*
|
|
Reserve one block at the start of the device
|
|
for a partition map.
|
|
|
|
TODO: and four or so more for a driver?
|
|
*/
|
|
return ssize_t(address) - 5;
|
|
}
|
|
|
|
std::vector<uint8_t> Mapper::convert_source_block(ssize_t source_address, std::vector<uint8_t> source_data) {
|
|
switch(source_address) {
|
|
case -5: {
|
|
uint32_t total_device_blocks = uint32_t(number_of_blocks_ + 5);
|
|
|
|
/* The driver descriptor. */
|
|
std::vector<uint8_t> driver_description = {
|
|
0x45, 0x52, /* device signature */
|
|
0x02, 0x00, /* block size, in bytes */
|
|
|
|
uint8_t(total_device_blocks >> 24),
|
|
uint8_t(total_device_blocks >> 16),
|
|
uint8_t(total_device_blocks >> 8),
|
|
uint8_t(total_device_blocks),
|
|
/* number of blocks on device */
|
|
|
|
0x00, 0x00, /* reserved */
|
|
0x00, 0x00, /* reserved */
|
|
0x00, 0x00, /* reserved */
|
|
|
|
0x00, 0x01, /* number of device descriptor entries */
|
|
0x00, 0x01, /* first device descriptor's starting block */
|
|
0x00, 0x04, /* size of device driver */
|
|
0x00, 0x01, /* operating system (MacOS = 1) */
|
|
};
|
|
driver_description.resize(512);
|
|
|
|
return driver_description;
|
|
}
|
|
|
|
default: return source_data;
|
|
}
|
|
}
|