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properly report fifo enabled bits in iir

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Fabian 2022-06-21 10:00:18 +09:00
parent 961a9f46ef
commit 12d595b774
1 changed files with 4 additions and 2 deletions
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6
src/uart.js
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@ -118,7 +118,7 @@ function UART(cpu, port, bus)
}
else
{
if((this.ier & UART_IIR_THRI) === 0 && (out_byte & UART_IIR_THRI))
if((this.ier & UART_IIR_THRI) === 0 && (out_byte & UART_IIR_THRI))
{
// re-throw THRI if it was masked
this.ThrowInterrupt(UART_IIR_THRI);
@ -173,13 +173,15 @@ function UART(cpu, port, bus)
io.register_read(port | 2, this, function()
{
var ret = this.iir & 0xF | 0xC0;
var ret = this.iir & 0xF;
dbg_log("read interrupt identification: " + h(this.iir), LOG_SERIAL);
if (this.iir == UART_IIR_THRI) {
this.ClearInterrupt(UART_IIR_THRI);
}
if(this.fifo_control & 1) ret |= 0xC0;
return ret;
});
io.register_write(port | 2, this, function(out_byte)