t_stat ptr_svc (UNIT *uptr)
{
int32 temp;
if ((ptr_unit.flags & UNIT_ATT) == 0) { /* attached? */
ptr_set_err (); /* no, err, disc */
CRETIOE (ptr_stopioe, SCPE_UNATT);
}
if ((temp = getc (ptr_unit.fileref)) == EOF) { /* end of file? */
ptr_set_err (); /* yes, err, disc */
if (feof (ptr_unit.fileref)) { /* end of file? */
if (ptr_stopioe)
sim_printf ("PTR end of file\n");
else return SCPE_OK;
}
else perror ("PTR I/O error"); /* I/O error */
clearerr (ptr_unit.fileref);
return SCPE_IOERR;
}
ptr_unit.pos = ptr_unit.pos + 1; /* inc position */
if (temp) { /* leader/gap? */
ptr_unit.buf = temp & 0177; /* no, save char */
xfr_req = xfr_req | XFR_PTR; /* set xfr flag */
ptr_sor = 0; /* in record */
}
else if (!ptr_sor) /* end record? */
chan_set_flag (ptr_dib.chan, CHF_EOR); /* ignore leader */
sim_activate (&ptr_unit, ptr_unit.wait); /* get next char */
return SCPE_OK;
}
void ptp_set_err (void)
{
chan_set_flag (ptp_dib.chan, CHF_ERR); /* error */
chan_disc (ptp_dib.chan); /* disconnect */
xfr_req = xfr_req & ~XFR_PTP; /* clear xfr */
sim_cancel (&ptp_unit); /* stop */
return;
}
void mt_set_err (UNIT *uptr)
{
chan_set_flag (mt_dib.chan, CHF_EOR | CHF_ERR); /* eor, error */
chan_disc (mt_dib.chan); /* disconnect */
xfr_req = xfr_req & ~XFR_MT0; /* clear xfr */
sim_cancel (uptr); /* stop */
mt_bptr = 0; /* buf empty */
return;
}
void lpt_end_op (int32 fl)
{
if (fl) /* set flags */
chan_set_flag (lpt_dib.chan, fl);
xfr_req = xfr_req & ~XFR_LPT; /* clear xfr */
sim_cancel (&lpt_unit); /* stop */
if (fl & CHF_ERR) { /* error? */
chan_disc (lpt_dib.chan); /* disconnect */
lpt_err = 1; /* set lpt err */
}
return;
}
void mt_readend (UNIT *uptr)
{
sim_cancel (uptr); /* stop timer */
mt_skip = 0; /* clr skp flg */
chan_set_flag (mt_dib.chan, CHF_EOR); /* end record */
if (mt_eof) /* EOF? */
chan_disc (mt_dib.chan);
else {
mt_gap = 1; /* no, in gap */
sim_activate (uptr, mt_gtime); /* start timer */
}
return;
}
t_stat lpt_svc (UNIT *uptr)
{
t_stat r = SCPE_OK;
if (lpt_sta & SET_XFR) /* need lpt xfr? */
chan_set_ordy (lpt_dib.chan);
if (lpt_sta & SET_EOR) { /* printing? */
chan_set_flag (lpt_dib.chan, CHF_EOR); /* set eor flg */
r = lpt_bufout (uptr); /* output buf */
}
if (lpt_sta & SET_SPC) { /* spacing? */
if (uptr->flags & UNIT_ATT) { /* attached? */
int32 ln = LPT_GETLN (lpt_spc); /* get lines, ch */
if (lpt_spc & 0200) /* n lines? */
lpt_space (uptr, ln); /* upspace */
else lpt_crctl (uptr, ln); /* carriage ctl */
}
r = lpt_status (uptr); /* update status */
}
lpt_sta = 0; /* clear state */
return r;
}
t_stat ptr (uint32 fnc, uint32 inst, uint32 *dat)
{
int32 new_ch;
switch (fnc) { /* case function */
case IO_CONN: /* connect */
new_ch = I_GETEOCH (inst); /* get new chan */
if (new_ch != ptr_dib.chan) /* inv conn? err */
return SCPE_IERR;
ptr_sor = 1; /* start of rec */
xfr_req = xfr_req & ~XFR_PTR; /* clr xfr flag */
sim_activate (&ptr_unit, ptr_unit.wait); /* activate */
break;
case IO_DISC: /* disconnect */
ptr_sor = 0; /* clear state */
xfr_req = xfr_req & ~XFR_PTR; /* clr xfr flag */
sim_cancel (&ptr_unit); /* deactivate unit */
break;
case IO_READ: /* read */
xfr_req = xfr_req & ~XFR_PTR; /* clr xfr flag */
*dat = ptr_unit.buf & 077; /* get buf data */
if (ptr_unit.buf != odd_par[*dat]) /* good parity? */
chan_set_flag (ptr_dib.chan, CHF_ERR); /* no, error */
break;
case IO_WREOR: /* write eor */
break;
case IO_EOM1: /* EOM mode 1*/
case IO_WRITE: /* write */
CRETINS; /* error */
}
return SCPE_OK;
}
t_stat mt (uint32 fnc, uint32 inst, uint32 *dat)
{
int32 u = inst & MT_UNIT; /* get unit */
UNIT *uptr = mt_dev.units + u; /* get unit ptr */
int32 t, new_ch;
uint8 chr;
t_stat r;
switch (fnc) { /* case function */
case IO_CONN: /* connect */
new_ch = I_GETEOCH (inst); /* get new chan */
if (new_ch != mt_dib.chan) /* wrong chan? */
return SCPE_IERR;
if (mt_gap) { /* in gap? */
mt_gap = 0; /* clr gap flg */
sim_cancel (uptr); /* cancel timer */
}
else if (sim_is_active (uptr)) /* busy? */
CRETIOP;
uptr->eotf = 0; /* clr eot flag */
mt_eof = 0; /* clr eof flag */
mt_skip = 0; /* clr skp flag */
mt_bptr = mt_blnt = 0; /* init buffer */
if ((inst & DEV_MTS)? (CHC_GETCPW (inst) < 2): /* scn & cpw<3? */
(inst & CHC_REV)) /* rw & rev? */
return STOP_INVIOP;
mt_inst = inst; /* save inst */
if ((inst & DEV_MTS) && !(inst & DEV_OUT)) /* scanning? */
chan_set_flag (mt_dib.chan, CHF_SCAN); /* set chan flg */
xfr_req = xfr_req & ~XFR_MT0; /* clr xfr flag */
sim_activate (uptr, mt_gtime); /* start timer */
break;
case IO_EOM1: /* EOM mode 1 */
new_ch = I_GETEOCH (inst); /* get new chan */
if (new_ch != mt_dib.chan) /* wrong chan? */
CRETIOP;
t = inst & 07670; /* get command */
if ((t == 04010) && !sim_is_active (uptr)) { /* rewind? */
sim_tape_rewind (uptr); /* rewind unit */
uptr->eotf = 0; /* clr eot */
uptr->botf = 1; /* set bot */
}
else if ((t == 03610) && sim_is_active (uptr) &&/* skip rec? */
((mt_inst & DEV_OUT) == 0))
mt_skip = 1; /* set flag */
else CRETINS;
break;
case IO_DISC: /* disconnect */
sim_cancel (uptr); /* no more xfr's */
if (inst & DEV_OUT) { /* write? */
if (r = mt_wrend (inst)) /* end record */
return r;
}
break;
case IO_WREOR: /* write eor */
chan_set_flag (mt_dib.chan, CHF_EOR); /* set eor flg */
if (r = mt_wrend (inst)) /* end record */
return r;
mt_gap = 1; /* in gap */
sim_activate (uptr, mt_gtime); /* start timer */
break;
case IO_SKS: /* SKS */
new_ch = I_GETSKCH (inst); /* get chan # */
if (new_ch != mt_dib.chan) /* wrong chan? */
return SCPE_IERR;
if ((inst & (DEV_OUT | DEV_MTS)) == 0) { /* not sks 1n? */
t = I_GETSKCND (inst); /* get skip cond */
switch (t) { /* case sks cond */
case 001: /* sks 1021n */
*dat = 1; /* not magpak */
break;
case 002: /* sks 1041n */
if (!(uptr->flags & UNIT_ATT) || /* not ready */
sim_is_active (uptr)) *dat = 1;
break;
case 004: /* sks 1101n */
if (!uptr->eotf) *dat = 1; /* not EOT */
break;
case 010: /* sks 1201n */
if (!uptr->botf) *dat = 1; /* not BOT */
break;
case 013: /* sks 12610 */
if (!mt_gap) *dat = 1; /* not in gap */
break;
case 017: /* sks 13610 */
if (!mt_eof) *dat = 1; /* not EOF */
break;
case 020: /* sks 1401n */
if (!sim_tape_wrp (uptr)) *dat = 1; /* not wrp */
break;
case 031: /* sks 1621n */
case 033: /* sks 1661n */
*dat = 1; /* not 556bpi */
case 035: /* sks 1721n */
break; /* not 800bpi */
}
} /* end if */
break;
case IO_READ: /* read */
xfr_req = xfr_req & ~XFR_MT0; /* clr xfr flag */
if (mt_blnt == 0) { /* first read? */
r = mt_readrec (uptr); /* get data */
if ((r != SCPE_OK) || (mt_blnt == 0)) /* err, inv reclnt? */
return r;
}
uptr->botf = 0; /* off BOT */
if (mt_inst & CHC_REV) /* get next rev */
chr = mtxb[--mt_bptr] & 077;
else chr = mtxb[mt_bptr++] & 077; /* get next fwd */
if (!(mt_inst & CHC_BIN)) /* bcd? */
chr = bcd_to_sds[chr];
*dat = chr & 077; /* give to chan */
if ((mt_inst & CHC_REV)? (mt_bptr <= 0): /* rev or fwd, */
(mt_bptr >= mt_blnt)) /* recd done? */
mt_readend (uptr);
break;
case IO_WRITE: /* write */
uptr->botf = 0; /* off BOT */
chr = (*dat) & 077;
xfr_req = xfr_req & ~XFR_MT0; /* clr xfr flag */
if (!(mt_inst & CHC_BIN)) /* bcd? */
chr = sds_to_bcd[chr];
if (mt_bptr < MT_MAXFR) mtxb[mt_bptr++] = chr; /* insert in buf */
break;
default:
CRETINS;
}
return SCPE_OK;
}