// add a 6502 cpu
void m1snd_add6502(long clock, void *handlers)
{
rw6502 = handlers;
timer_add_cpu(CPU_M6502, clock, m6502_execute, m6502_getcycles, m6502_yield, dummy_getctx, dummy_setctx, NULL);
m6502_init();
m6502_reset(NULL);
m6502_set_irq_callback(m6502_irq_callback);
}
static void deco16_reset (void)
{
m6502_reset();
m6502.subtype = SUBTYPE_DECO16;
m6502.insn = insndeco16;
PCL = RDMEM(DECO16_RST_VEC+1);
PCH = RDMEM(DECO16_RST_VEC);
m6502.sp.d = 0x01ff; /* stack pointer starts at page 1 offset FF */
m6502.p = F_T|F_I|F_Z|F_B|(P&F_D); /* set T, I and Z flags */
m6502.pending_irq = 0; /* nonzero if an IRQ is pending */
m6502.after_cli = 0; /* pending IRQ and last insn cleared I */
change_pc(PCD);
}
// add a 6502 cpu, managed via memory manager
void m1snd_add6502b(long clock, void *handlers)
{
char *ctx;
int cpunum;
rw6502 = &m6502b;
ctx = malloc(4*1024);
cpunum = timer_add_cpu(CPU_M6502, clock, m6502_execute, m6502_getcycles, m6502_yield, m6502_getctx, m6502_setctx, ctx);
memory_register_cpu(cpunum, 8, M1_CPU_LE);
memory_context_switch(cpunum);
m6502_init();
m6502_reset(NULL);
m6502_set_irq_callback(m6502_irq_callback);
m6502_getctx(ctx);
}
void main_reset()
{
m6502_reset();
crtc_reset();
video_reset();
sysvia_reset();
uservia_reset();
serial_reset();
acia_reset(&sysacia);
wd1770_reset();
i8271_reset();
scsi_reset();
vdfs_reset();
sid_reset();
music4000_reset();
music5000_reset();
sn_init();
if (curtube != -1) tubes[curtube].reset();
else tube_exec = NULL;
tube_reset();
memset(ram, 0, 64 * 1024);
}
static void m65c02_reset (void)
{
m6502_reset();
P &=~F_D;
}
static void m6510_reset (void)
{
m6502_reset();
m6502.port = 0xff;
m6502.ddr = 0x00;
}
static void m65c02_reset (void *param)
{
m6502_reset(param);
P &=~F_D;
}
void main_run()
{
int c, d;
if (key[KEY_PGUP]) {
bemfreerun = 1;
old_key_pgup = 1;
}
else if (old_key_pgup) {
old_key_pgup = 0;
if (!key[KEY_LSHIFT] && !key[KEY_RSHIFT])
bemfreerun = 0;
}
if (bemfreerun == 2) {
// A key was pressed while freerunning; disable freerun temporarily
// until no key is pressed any more.
if (!key_any_down())
bemfreerun = 1;
}
if ((fcount > 0 || (bemfreerun == 1) || (motor && fasttape)))
{
if (autoboot) autoboot--;
fcount--;
framesrun++;
if (bemfreerun || (motor && fasttape)) fcount=0;
if (x65c02) m65c02_exec();
else m6502_exec();
ddnoiseframes++;
if (ddnoiseframes >= 5)
{
ddnoiseframes = 0;
ddnoise_mix();
}
key_check();
poll_joystick();
for (c = 0; c < 2; c++)
{
joybutton[c] = 0;
for (d = 0; d < joy[c].num_buttons; d++)
{
if (joy[c].button[d].b) joybutton[c] = 1;
}
}
if (savestate_wantload) savestate_doload();
if (savestate_wantsave) savestate_dosave();
if (key[KEY_F10] && (debug_core || debug_tube)) debug_step = 1;
if (key[KEY_F12] && !resetting)
{
m6502_reset();
video_reset();
i8271_reset();
wd1770_reset();
sid_reset();
music5000_reset();
if (curtube != -1) tubes[curtube].reset();
tube_reset();
}
resetting = key[KEY_F12];
}
else
{
framesrun = 0;
rest(1);
}
if (key[KEY_PGDN] && !old_key_pgdn)
bempause ^= 1;
old_key_pgdn = key[KEY_PGDN];
if (key[KEY_RIGHT] && !old_key_right && bempause)
bemstep = 1;
old_key_right = key[KEY_RIGHT];
if (framesrun > 10) fcount = 0;
}
