static int pp_read(CBM_FILE fd, unsigned char *c1, unsigned char *c2)
{
SETSTATEDEBUG((void)0);
pp_check_direction(PP_READ);
SETSTATEDEBUG((void)0);
#ifndef USE_CBM_IEC_WAIT
while(!cbm_iec_get(fd, IEC_DATA));
#else
cbm_iec_wait(fd, IEC_DATA, 1);
#endif
SETSTATEDEBUG((void)0);
*c1 = cbm_pp_read(fd);
SETSTATEDEBUG((void)0);
cbm_iec_release(fd, IEC_CLOCK);
SETSTATEDEBUG((void)0);
#ifndef USE_CBM_IEC_WAIT
while(cbm_iec_get(fd, IEC_DATA));
#else
cbm_iec_wait(fd, IEC_DATA, 0);
#endif
SETSTATEDEBUG((void)0);
*c2 = cbm_pp_read(fd);
SETSTATEDEBUG((void)0);
cbm_iec_set(fd, IEC_CLOCK);
SETSTATEDEBUG((void)0);
return 0;
}
static int open_disk(CBM_FILE fd, d64copy_settings *settings,
const void *arg, int for_writing,
turbo_start start, d64copy_message_cb message_cb)
{
unsigned char d = (unsigned char)(ULONG_PTR)arg;
const unsigned char *drive_prog;
int prog_size;
fd_cbm = fd;
two_sided = settings->two_sided;
if(settings->drive_type != cbm_dt_cbm1541)
{
drive_prog = pp1571_drive_prog;
prog_size = sizeof(pp1571_drive_prog);
}
else
{
drive_prog = pp1541_drive_prog;
prog_size = sizeof(pp1541_drive_prog);
}
/* make sure the XP1541 portion of the cable is in input mode */
cbm_pp_read(fd_cbm);
cbm_upload(fd_cbm, d, 0x700, drive_prog, prog_size);
start(fd, d);
pp_check_direction(PP_READ);
cbm_iec_set(fd_cbm, IEC_CLOCK);
cbm_iec_wait(fd_cbm, IEC_DATA, 1);
return 0;
}
static int pp_write(CBM_FILE fd, char c1, char c2)
{
SETSTATEDEBUG((void)0);
pp_check_direction(PP_WRITE);
SETSTATEDEBUG((void)0);
#ifndef USE_CBM_IEC_WAIT
while(!cbm_iec_get(fd, IEC_DATA));
#else
cbm_iec_wait(fd, IEC_DATA, 1);
#endif
SETSTATEDEBUG((void)0);
cbm_pp_write(fd, c1);
SETSTATEDEBUG((void)0);
cbm_iec_release(fd, IEC_CLOCK);
SETSTATEDEBUG((void)0);
#ifndef USE_CBM_IEC_WAIT
while(cbm_iec_get(fd, IEC_DATA));
#else
cbm_iec_wait(fd, IEC_DATA, 0);
#endif
SETSTATEDEBUG((void)0);
cbm_pp_write(fd, c2);
SETSTATEDEBUG((void)0);
cbm_iec_set(fd, IEC_CLOCK);
SETSTATEDEBUG((void)0);
return 0;
}