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- return value of MCR fixed 

- unnecessary untrigger_irq() calls removed
This commit is contained in:
Volker Ruppert 2002-01-08 20:31:14 +00:00
parent 395ef2f5c7
commit 26a2731a19
1 changed files with 8 additions and 24 deletions
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32
bochs/iodev/serial.cc
View File

@ -1,8 +1,8 @@
/////////////////////////////////////////////////////////////////////////
// $Id: serial.cc,v 1.14 2001-11-17 18:10:54 vruppert Exp $
// $Id: serial.cc,v 1.15 2002-01-08 20:31:14 vruppert Exp $
/////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 2001 MandrakeSoft S.A.
// Copyright (C) 2002 MandrakeSoft S.A.
//
// MandrakeSoft S.A.
// 43, rue d'Aboukir
@ -262,11 +262,6 @@ bx_serial_c::read(Bit32u address, unsigned io_len)
BX_SER_THIS s[0].line_status.rxdata_ready = 0;
BX_SER_THIS s[0].rx_empty = 1;
/* If there are no more ints pending, clear the irq */
if ((BX_SER_THIS s[0].rx_interrupt == 1) &&
(BX_SER_THIS s[0].tx_interrupt == 0)) {
BX_SER_THIS devices->pic->untrigger_irq(4);
}
BX_SER_THIS s[0].rx_interrupt = 0;
}
break;
@ -299,11 +294,6 @@ bx_serial_c::read(Bit32u address, unsigned io_len)
BX_SER_THIS s[0].tx_interrupt = 0;
/* no more ints pending, clear the irq */
if (BX_SER_THIS s[0].int_ident.int_ID == 0x1) {
BX_SER_THIS devices->pic->untrigger_irq(4);
}
val = BX_SER_THIS s[0].int_ident.ipending |
(BX_SER_THIS s[0].int_ident.int_ID << 1) |
(BX_SER_THIS s[0].int_ident.fifo_enabled << 6);
@ -320,11 +310,11 @@ bx_serial_c::read(Bit32u address, unsigned io_len)
break;
case 0x03FC: /* MODEM control register */
val = BX_SER_THIS s[0].modem_cntl.dtr |
(BX_SER_THIS s[0].modem_cntl.rts << 1) |
(BX_SER_THIS s[0].modem_cntl.out1 << 2) |
(BX_SER_THIS s[0].modem_cntl.out2 << 3) |
(BX_SER_THIS s[0].modem_cntl.local_loopback);
val = BX_SER_THIS s[0].modem_cntl.dtr |
(BX_SER_THIS s[0].modem_cntl.rts << 1) |
(BX_SER_THIS s[0].modem_cntl.out1 << 2) |
(BX_SER_THIS s[0].modem_cntl.out2 << 3) |
(BX_SER_THIS s[0].modem_cntl.local_loopback << 4);
break;
case 0x03FD: /* Line status register */
@ -418,15 +408,9 @@ bx_serial_c::write(Bit32u address, Bit32u value, unsigned io_len)
BX_SER_THIS s[0].tx_empty = 0;
BX_SER_THIS s[0].line_status.txtransm_empty = 0;
BX_SER_THIS s[0].line_status.txhold_empty = 0;
/* If there are no more ints pending, clear the irq */
if ((BX_SER_THIS s[0].tx_interrupt == 1) &&
(BX_SER_THIS s[0].rx_interrupt == 0)) {
BX_SER_THIS devices->pic->untrigger_irq(4);
}
BX_SER_THIS s[0].tx_interrupt = 0;
BX_SER_THIS s[0].txbuffer = value;
bx_pc_system.activate_timer(BX_SER_THIS s[0].tx_timer_index
,
bx_pc_system.activate_timer(BX_SER_THIS s[0].tx_timer_index,
(int) (1000000.0 / (BX_SER_THIS s[0].baudrate / 8)),
0); /* not continuous */
} else {