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Add a debug function to log all access to IO regs.

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This commit is contained in:
Godzil 2021-04-04 21:05:48 +01:00
parent a89e253d9c
commit e4cf98bfe1
2 changed files with 30 additions and 2 deletions
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22
source/io.cpp
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@ -29,10 +29,13 @@
#include "audio.h"
#include "memory.h"
#define IO_DUMP
extern uint8_t *externalEeprom;
extern uint32_t romAddressMask;
extern uint16_t *internalEeprom;
extern nec_Regs I;
extern uint64_t nec_monotonicCycles;
enum
{
@ -86,6 +89,8 @@ uint8_t ws_key_flipped;
int rtcDataRegisterReadCount=0;
FILE *ioLogFp = NULL;
////////////////////////////////////////////////////////////////////////////////
//
////////////////////////////////////////////////////////////////////////////////
@ -139,6 +144,10 @@ void ws_io_init(void)
ws_io_reset();
ws_key_flipped=0;
#ifdef IO_DUMP
ioLogFp = fopen("iodump.csv", "wt");
#endif
}
////////////////////////////////////////////////////////////////////////////////
//
@ -172,6 +181,10 @@ void ws_io_done(void)
{
free(ws_ioRam);
}
#ifdef IO_DUMP
fclose(ioLogFp);
#endif
}
/* Serial port */
@ -582,6 +595,10 @@ uint8_t cpu_readport(uint8_t port)
exit:
if (ioLogFp)
{
fprintf(ioLogFp, "%ld, R, %02X, %02X\n", nec_monotonicCycles, port, retVal);
}
return retVal;
}
////////////////////////////////////////////////////////////////////////////////
@ -600,6 +617,11 @@ void cpu_writeport(uint32_t port,uint8_t value)
int unknown_io_port=0;
if (ioLogFp)
{
fprintf(ioLogFp, "%ld, W, %02X, %02X\n", nec_monotonicCycles, port, value);
}
if (port > 0x100)
{
port &= 0xFF;

10
source/nec/nec.cpp
View File

@ -38,6 +38,7 @@
/* cpu state */
/***************************************************************************/
uint64_t nec_monotonicCycles;
int nec_ICount;
nec_Regs I;
@ -65,6 +66,7 @@ void nec_reset (void *param)
unsigned int i,j,c;
BREGS reg_name[8]= { AL, CL, DL, BL, AH, CH, DH, BH };
nec_monotonicCycles = 0;
memset( &I, 0, sizeof(I) );
@ -3912,7 +3914,7 @@ const char *instructionsName[256] =
int nec_execute(int cycles)
{
int done;
nec_ICount=cycles;
// cpu_type=V30;
@ -3928,6 +3930,10 @@ int nec_execute(int cycles)
// nec_ICount++;
}
return cycles - nec_ICount;
done = cycles - nec_ICount;
nec_monotonicCycles += done;
return done;
}