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Preliminary PCjr emulation.

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Improvements to PIT and serial emulation.
This commit is contained in:
TomW 2014-01-12 11:37:09 +00:00
commit f18f10574a
27 changed files with 1659 additions and 377 deletions
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28
src/ibm.h
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@ -199,6 +199,13 @@ typedef struct PIT
int delay[3];
int rereadlatch[3];
int gate[3];
int out[3];
int running[3];
int enabled[3];
int newcount[3];
int count[3];
int using_timer[3];
int initial[3];
} PIT;
PIT pit;
@ -250,25 +257,6 @@ extern int pic_intpending;
int intcount;
/*FDC*/
typedef struct FDC
{
uint8_t dor,stat,command,dat,st0;
int head,track[256],sector,drive,lastdrive;
int pos;
uint8_t params[256];
uint8_t res[256];
int pnum,ptot;
int rate;
uint8_t specify[256];
int eot[256];
int lock;
int perp;
uint8_t config, pretrk;
int abort;
} FDC;
FDC fdc;
int disctime;
char discfns[2][256];
int driveempty[2];
@ -290,6 +278,7 @@ int driveempty[2];
#define ET4000W32 (gfxcard==GFX_ET4000W32 && VGA)
#define AT (romset>=ROM_IBMAT)
#define PCI (romset >= ROM_PCI486)
#define PCJR (romset == ROM_IBMPCJR)
#define AMIBIOS (romset==ROM_AMI386 || romset==ROM_AMI486 || romset == ROM_WIN486)
@ -299,6 +288,7 @@ enum
{
ROM_IBMPC = 0, /*301 keyboard error, 131 cassette (!!!) error*/
ROM_IBMXT, /*301 keyboard error*/
ROM_IBMPCJR,
ROM_GENXT, /*'Generic XT BIOS'*/
ROM_DTKXT,
ROM_EUROPC,