Sprinter/mame
2
0
Fork 0
mirror of https://github.com/holub/mame synced 2025-04-26 10:13:37 +03:00
Code Issues Actions 29 Packages Projects Releases Wiki Activity

mc6854.cpp: improved LOG messages and fine tuning of IRQ handling

Browse Source
This commit is contained in:
Joakim Larsson Edstrom 2019-12-19 20:21:56 +01:00
parent f0d1f21d34
commit 3fa3d0fbef
1 changed files with 21 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

36
src/devices/machine/mc6854.cpp
View File

@ -33,20 +33,18 @@
#include "emu.h"
#include "mc6854.h"
#define LOG_SETUP (1U << 1)
#define LOG_BITS (1U << 2)
#define LOG_SETUP ( 1U << 1 )
#define LOG_BITS ( 1U << 2 )
#define LOG_IRQ ( 1U << 3 )
//#define VERBOSE (LOG_BITS|LOG_GENERAL | LOG_SETUP)
//#define VERBOSE (LOG_IRQ | LOG_BITS | LOG_GENERAL | LOG_SETUP)
//#define LOG_OUTPUT_STREAM std::cout
#include "logmacro.h"
#define LOGSETUP(...) LOGMASKED(LOG_SETUP, __VA_ARGS__)
#define LOGSETUP(...) LOGMASKED(LOG_SETUP, __VA_ARGS__)
#define LOGBITS(...) LOGMASKED(LOG_BITS, __VA_ARGS__)
//#define VERBOSE 1
//#include "logmacro.h"
#define LOGIRQ(...) LOGMASKED(LOG_IRQ, __VA_ARGS__)
/******************* parameters ******************/
@ -718,15 +716,23 @@ void mc6854_device::update_sr1( )
m_sr1 &= ~RDA;
/* update IRQ */
LOGIRQ("\nUpdate IRQ in: %d\n", (m_sr1 & IRQ) ? 1 : 0);
m_sr1 &= ~IRQ;
if ( TIE && (m_sr1 & (TU | TDRA)) && !TDSR )
m_sr1 |= IRQ;
if ( RIE && !RDSR )
if ( TIE )
{
if ( m_sr1 & (S2RQ | RDA | CTS) )
m_sr1 |= IRQ;
if ( m_sr2 & (ERR | FV | DCD | OVRN | RABT | RIDLE | AP) )
m_sr1 |= IRQ;
if ( m_sr1 & TU ) m_sr1 |= IRQ;
LOGIRQ(" - Update IRQ TU: %d\n", (m_sr1 & IRQ) ? 1 : 0);
if ( ( m_sr1 & TDRA ) && !TDSR ) m_sr1 |= IRQ; // TDRA will not cause interrupt if in DMA mode
LOGIRQ(" - Update IRQ TDRA: %d\n", (m_sr1 & IRQ) ? 1 : 0);
}
if ( RIE )
{
if ( m_sr1 & (S2RQ | CTS) ) m_sr1 |= IRQ;
LOGIRQ(" - Update IRQ S2RQ(%02x)|CTS(%d): %d\n", (m_sr2 & 0x7f), (m_sr1 & CTS) ? 1 : 0, (m_sr1 & IRQ) ? 1 : 0);
if ( ( m_sr1 & RDA ) && !RDSR ) m_sr1 |= IRQ; // RDA will not cause interrupt if in DMA mode
LOGIRQ(" - Update IRQ RDA(%d) && !RDSR(%d): %d\n", (m_sr1 & RDA) ? 1 : 0, RDSR ? 1 : 0, (m_sr1 & IRQ) ? 1 : 0);
if ( m_sr2 & (ERR | FV | DCD | OVRN | RABT | RIDLE | AP) ) m_sr1 |= IRQ;
LOGIRQ(" - Update IRQ ERR: %d\n", (m_sr1 & IRQ) ? 1 : 0);
}
m_out_irq_cb((m_sr1 & IRQ) ? ASSERT_LINE : CLEAR_LINE);