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rtc: implement RTC

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Untested in-game since Animal Forest does not yet run.
This commit is contained in:
Mike Ryan 2016-02-03 21:23:23 -08:00 committed by Tyler J. Stachecki
parent cfd2336443
commit b2721e7d37
4 changed files with 92 additions and 6 deletions
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1
CMakeLists.txt
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@ -357,6 +357,7 @@ set(SI_SOURCES
${PROJECT_SOURCE_DIR}/si/pak.c
${PROJECT_SOURCE_DIR}/si/pak_transfer.c
${PROJECT_SOURCE_DIR}/si/gb.c
${PROJECT_SOURCE_DIR}/si/rtc.c
)
set(VI_SOURCES

10
si/controller.c
View file

@ -15,6 +15,7 @@
#include "ri/controller.h"
#include "si/cic.h"
#include "si/controller.h"
#include "si/rtc.h"
#include "thread.h"
#include "vi/controller.h"
#include "vr4300/interface.h"
@ -190,22 +191,19 @@ int pif_perform_command(struct si_controller *si,
case 0x06:
if (channel != 4)
assert(0 && "Invalid channel for RTC status");
// TODO
return 1;
return rtc_status(send_buf, send_bytes, recv_buf, recv_bytes);
// RTC read
case 0x07:
if (channel != 4)
assert(0 && "Invalid channel for RTC read");
// TODO
return 1;
return rtc_read(send_buf, send_bytes, recv_buf, recv_bytes);
// RTC write
case 0x08:
if (channel != 4)
assert(0 && "Invalid channel for RTC write");
// TODO
return 1;
return rtc_write(send_buf, send_bytes, recv_buf, recv_bytes);
// Unimplemented command:
default:

65
si/rtc.c Normal file
View file

@ -0,0 +1,65 @@
//
// si/rtc.c: RTC routines
//
// CEN64: Cycle-Accurate Nintendo 64 Emulator.
// Copyright (C) 2016, Mike Ryan.
//
// This file is subject to the terms and conditions defined in
// 'LICENSE', which is part of this source code package.
//
#include "common.h"
#include "local_time.h"
int rtc_status(uint8_t *send_buf, uint8_t send_bytes,
uint8_t *recv_buf, uint8_t recv_bytes) {
recv_buf[0] = 0x00;
recv_buf[1] = 0x10;
recv_buf[2] = 0x00;
return 0;
}
int rtc_read(uint8_t *send_buf, uint8_t send_bytes,
uint8_t *recv_buf, uint8_t recv_bytes) {
struct time_stamp now;
// FIXME is this needed?
memset(recv_buf, 0, recv_bytes);
// read RTC block
switch (send_buf[1]) {
case 0:
recv_buf[0] = 0x02;
break;
case 1:
debug("RTC cannot read block 1\n");
return 1;
case 2:
get_local_time(&now);
recv_buf[0] = byte2bcd(now.sec);
recv_buf[1] = byte2bcd(now.min);
recv_buf[2] = 0x80 + byte2bcd(now.hour);
recv_buf[3] = byte2bcd(now.day);
recv_buf[4] = byte2bcd(now.week_day);
recv_buf[5] = byte2bcd(now.month);
recv_buf[6] = byte2bcd(now.year);
recv_buf[7] = byte2bcd(now.year / 100);
recv_buf[8] = 0x00; // status
break;
default:
debug("RTC unknown block\n");
return 1;
}
return 0;
}
int rtc_write(uint8_t *send_buf, uint8_t send_bytes,
uint8_t *recv_buf, uint8_t recv_bytes) {
debug("RTC write not implemented\n");
return 1;
}

22
si/rtc.h Normal file
View file

@ -0,0 +1,22 @@
//
// si/rtc.h: RTC routines
//
// CEN64: Cycle-Accurate Nintendo 64 Emulator.
// Copyright (C) 2016, Mike Ryan.
//
// This file is subject to the terms and conditions defined in
// 'LICENSE', which is part of this source code package.
//
#ifndef __si_rtc_h__
#define __si_rtc_h__
#include "common.h"
int rtc_status(uint8_t *send_buf, uint8_t send_bytes,
uint8_t *recv_buf, uint8_t recv_bytes);
int rtc_read(uint8_t *send_buf, uint8_t send_bytes,
uint8_t *recv_buf, uint8_t recv_bytes);
int rtc_write(uint8_t *send_buf, uint8_t send_bytes,
uint8_t *recv_buf, uint8_t recv_bytes);
#endif