static void TimerAOver(FM_ST ST)
{
/* status set if enabled */
if ((ST.mode & 0x04) != 0) FM_STATUS_SET(ST, 0x01);
/* clear or reload the counter */
if (ST.timermodel == FM_TIMER_INTERVAL)
{
ST.TAC = (1024 - ST.TA);
if (ST.Timer_Handler != null) ST.Timer_Handler(ST.index, 0, (int)ST.TAC, ST.TimerBase);
}
else ST.TAC = 0;
}
/* Timer B Overflow */
static void TimerBOver(FM_ST ST)
{
/* status set if enabled */
if ((ST.mode & 0x08) != 0) FM_STATUS_SET(ST, 0x02);
/* clear or reload the counter */
if (ST.timermodel == FM_TIMER_INTERVAL)
{
ST.TBC = (256 - ST.TB) << 4;
if (ST.Timer_Handler != null) ST.Timer_Handler(ST.index, 1, (int)ST.TBC, ST.TimerBase);
}
else ST.TBC = 0;
}
static void FMSetMode(FM_ST ST, int n, int v)
{
/* b7 = CSM MODE */
/* b6 = 3 slot mode */
/* b5 = reset b */
/* b4 = reset a */
/* b3 = timer enable b */
/* b2 = timer enable a */
/* b1 = load b */
/* b0 = load a */
ST.mode = (uint)v;
/* reset Timer b flag */
if ((v & 0x20) != 0)
FM_STATUS_RESET(ST, 0x02);
/* reset Timer a flag */
if ((v & 0x10) != 0)
FM_STATUS_RESET(ST, 0x01);
/* load b */
if ((v & 0x02) != 0)
{
if (ST.TBC == 0)
{
ST.TBC = (256 - ST.TB) << 4;
/* External timer handler */
if (ST.Timer_Handler != null) ST.Timer_Handler(n, 1, (int)ST.TBC, ST.TimerBase);
}
}
else if (ST.timermodel == FM_TIMER_INTERVAL)
{ /* stop interbval timer */
if (ST.TBC != 0)
{
ST.TBC = 0;
if (ST.Timer_Handler != null) ST.Timer_Handler(n, 1, 0, ST.TimerBase);
}
}
/* load a */
if ((v & 0x01) != 0)
{
if (ST.TAC == 0)
{
ST.TAC = (1024 - ST.TA);
/* External timer handler */
if (ST.Timer_Handler != null) ST.Timer_Handler(n, 0, (int)ST.TAC, ST.TimerBase);
}
}
else if (ST.timermodel == FM_TIMER_INTERVAL)
{ /* stop interbval timer */
if (ST.TAC != 0)
{
ST.TAC = 0;
if (ST.Timer_Handler != null) ST.Timer_Handler(n, 0, 0, ST.TimerBase);
}
}
}