mirror of
https://github.com/JorjBauer/aiie.git
synced 2024-11-22 15:31:41 +00:00
99d0c8e72c
* New BIOS interface * New linux framebuffer version * Unified linuxfb and SDL with Teensy * Abstracted VM RAM * Fixed disk image corruption due to bad cache handling * Variable CPU speed support
92 lines
1.8 KiB
C++
92 lines
1.8 KiB
C++
#ifdef TEENSYDUINO
|
|
#include <Arduino.h>
|
|
#endif
|
|
|
|
#include "vmram.h"
|
|
#include <string.h>
|
|
#include "globals.h"
|
|
|
|
#ifndef TEENSYDUINO
|
|
#include <assert.h>
|
|
#else
|
|
#define assert(x) { if (!(x)) {Serial.print("assertion failed at "); Serial.println(__LINE__); delay(10000);} }
|
|
//#define assert(x) { }
|
|
#endif
|
|
|
|
// Serializing token for RAM data
|
|
#define RAMMAGIC 'R'
|
|
|
|
VMRam::VMRam() {memset(preallocatedRam, 0, sizeof(preallocatedRam)); }
|
|
|
|
VMRam::~VMRam() { }
|
|
|
|
void VMRam::init()
|
|
{
|
|
for (uint32_t i=0; i<sizeof(preallocatedRam); i++) {
|
|
preallocatedRam[i] = 0;
|
|
}
|
|
}
|
|
|
|
uint8_t VMRam::readByte(uint32_t addr)
|
|
{
|
|
return preallocatedRam[addr];
|
|
}
|
|
|
|
void VMRam::writeByte(uint32_t addr, uint8_t value)
|
|
{
|
|
preallocatedRam[addr] = value;
|
|
}
|
|
|
|
bool VMRam::Serialize(int8_t fd)
|
|
{
|
|
g_filemanager->writeByte(fd, RAMMAGIC);
|
|
uint32_t size = sizeof(preallocatedRam);
|
|
g_filemanager->writeByte(fd, (size >> 24) & 0xFF);
|
|
g_filemanager->writeByte(fd, (size >> 16) & 0xFF);
|
|
g_filemanager->writeByte(fd, (size >> 8) & 0xFF);
|
|
g_filemanager->writeByte(fd, (size ) & 0xFF);
|
|
|
|
for (uint32_t pos = 0; pos < sizeof(preallocatedRam); pos++) {
|
|
g_filemanager->writeByte(fd, preallocatedRam[pos]);
|
|
}
|
|
|
|
g_filemanager->writeByte(fd, RAMMAGIC);
|
|
|
|
return true;
|
|
}
|
|
|
|
bool VMRam::Deserialize(int8_t fd)
|
|
{
|
|
if (g_filemanager->readByte(fd) != RAMMAGIC) {
|
|
return false;
|
|
}
|
|
|
|
uint32_t size = 0;
|
|
size = g_filemanager->readByte(fd);
|
|
size <<= 8;
|
|
size |= g_filemanager->readByte(fd);
|
|
size <<= 8;
|
|
size |= g_filemanager->readByte(fd);
|
|
size <<= 8;
|
|
size |= g_filemanager->readByte(fd);
|
|
|
|
if (size != sizeof(preallocatedRam)) {
|
|
return false;
|
|
}
|
|
|
|
for (uint32_t pos = 0; pos < sizeof(preallocatedRam); pos++) {
|
|
preallocatedRam[pos] = g_filemanager->readByte(fd);
|
|
}
|
|
|
|
if (g_filemanager->readByte(fd) != RAMMAGIC) {
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool VMRam::Test()
|
|
{
|
|
return true;
|
|
}
|