4d345079ae
Most patches are temporary and there just to let the code to build. It will not work in the current state. Also now force the use of paged memory. It was not working properly because of the way the old GPU code is working.
103 lines
2.4 KiB
C
103 lines
2.4 KiB
C
/*******************************************************************************
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* NewOswan
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* rtc.c:
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*
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* Created by Manoël Trapier on 19/12/2021.
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* Copyright (c) 2014-2022 986-Studio. All rights reserved.
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*
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******************************************************************************/
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#include <stdint.h>
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#include <time.h>
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static int rtcDataRegisterReadCount = 0;
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// TODO: Temporary to let build for now
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static uint8_t ws_ioRam[0x100];
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uint8_t rtc_io_read(void *pdata, uint8_t port)
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{
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uint8_t retVal = 0;
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switch (port)
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{
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case 0xca : // RTC Command and status register
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// set ack to always 1
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retVal = (ws_ioRam[0xca] | 0x80);
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goto exit;
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case 0xcb : // RTC data register
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if (ws_ioRam[0xca] == 0x15) // get time command
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{
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struct tm *newtime;
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time_t long_time;
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time(&long_time);
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newtime = localtime(&long_time);
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#define BCD(value) ((value/10)<<4)|(value%10)
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switch (rtcDataRegisterReadCount)
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{
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case 0:
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rtcDataRegisterReadCount++;
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retVal = BCD(newtime->tm_year - 100);
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goto exit;
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case 1:
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rtcDataRegisterReadCount++;
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retVal = BCD(newtime->tm_mon);
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goto exit;
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case 2:
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rtcDataRegisterReadCount++;
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retVal = BCD(newtime->tm_mday);
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goto exit;
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case 3:
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rtcDataRegisterReadCount++;
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retVal = BCD(newtime->tm_wday);
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goto exit;
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case 4:
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rtcDataRegisterReadCount++;
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retVal = BCD(newtime->tm_hour);
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goto exit;
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case 5:
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rtcDataRegisterReadCount++;
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retVal = BCD(newtime->tm_min);
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goto exit;
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case 6:
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rtcDataRegisterReadCount = 0;
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retVal = BCD(newtime->tm_sec);
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goto exit;
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}
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return 0;
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}
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else
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{
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// set ack
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retVal = (ws_ioRam[0xcb] | 0x80);
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goto exit;
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}
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}
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exit:
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return retVal;
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}
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void rtc_io_write(void *pdata, uint8_t port, uint8_t value)
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{
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switch(port)
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{
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case 0xca:
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if (value == 0x15)
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{
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rtcDataRegisterReadCount = 0;
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}
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break;
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}
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} |