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r65emu/hardware.cpp
2015-12-02 19:41:15 +00:00

70 lines
1.4 KiB
C++

#include <UTFT.h>
#include <SPI.h>
#include <SD.h>
#include <SpiRAM.h>
#include "ps2drv.h"
#include "memory.h"
#include "spiram.h"
#include "CPU.h"
#include "hardware.h"
Memory memory;
PS2Driver ps2;
spiram sram(SPIRAM_SIZE);
UTFT utft(TFT_MODEL, TFT_RS, TFT_WR, TFT_CS, TFT_RST);
static CPU *_cpu;
bool hardware_reset() {
extern SPIClass SPIRAM_DEV;
SPIRAM_DEV.begin();
SPIRAM_DEV.setModule(SPIRAM_SPI);
SPIRAM_DEV.setClockDivider(1);
SPIRAM_DEV.setDataMode(SPI_MODE0);
bool sd = SD.begin(SD_CS, 2, SD_SPI);
pinMode(SPI_CS, OUTPUT); // without this, the SPI-RAM isn't seen
#if defined(TFT_BACKLIGHT)
digitalWrite(TFT_BACKLIGHT, HIGH);
#endif
_cpu->reset();
return sd;
}
void hardware_init(CPU &cpu) {
_cpu = &cpu;
memory.begin();
ps2.begin(KBD_DATA, KBD_IRQ);
#if defined(TFT_BACKLIGHT)
pinMode(TFT_BACKLIGHT, OUTPUT);
#endif
pinMode(SD_CS, OUTPUT);
digitalWrite(SD_CS, HIGH);
pinMode(SPIRAM_CS, OUTPUT);
digitalWrite(SPIRAM_CS, HIGH);
}
void hardware_checkpoint(Stream &s) {
unsigned ds = 0;
for (unsigned i = 0; i < 0x10000; i += ds) {
Memory::Device *dev = memory.get(i);
dev->checkpoint(s);
ds = dev->pages() * Memory::page_size;
}
_cpu->checkpoint(s);
}
void hardware_restore(Stream &s) {
unsigned ds = 0;
for (unsigned i = 0; i < 0x10000; i += ds) {
Memory::Device *dev = memory.get(i);
dev->restore(s);
ds = dev->pages() * Memory::page_size;
}
_cpu->restore(s);
}