Notes For V3.0-0

Because some key files have changed, V3.0 should be unzipped to a
clean directory.

1. New Features in 3.0-0

1.1 SCP and Libraries

- Added ASSIGN/DEASSIGN (logical name) commands.
- Changed RESTORE to unconditionally detach files.
- Added E11 and TPC format support to magtape library.
- Fixed bug in SHOW CONNECTIONS.
- Added USE_ADDR64 support

1.2 All magtapes

- Magtapes support SIMH format, E11 format, and TPC format (read only).
- SET <tape_unit> FORMAT=format sets the specified tape unit's format.
- SHOW <tape_unit> FORMAT displays the specified tape unit's format.
- Tape format can also be set as part of the ATTACH command, using
  the -F switch.

1.3 VAX

- VAX can be compiled without USE_INT64.
- If compiled with USE_INT64 and USE_ADDR64, RQ and TQ controllers support
  files > 2GB.
- VAX ROM has speed control (SET ROM DELAY/NODELAY).

2. Bugs Fixed in 3.01-0

2.1 VAX

- Fixed CVTfi bug: integer overflow not set if exponent out of range
- Fixed EMODx bugs:
  o First and second operands reversed
  o Separated fraction received wrong exponent
  o Overflow calculation on separated integer incorrect
  o Fraction not set to zero if exponent out of range
- Fixed interval timer and ROM access to pass power-up self-test even on very
  fast host processors (fixes from Mark Pizzolato).

2.2 1401

- Fixed mnemonic, instruction lengths, and reverse scan length check bug for MCS.
- Fixed MCE bug, BS off by 1 if zero suppress.
- Fixed chaining bug, D lost if return to SCP.
- Fixed H branch, branch occurs after continue.
- Added check for invalid 8 character MCW, LCA.
- Fixed magtape load-mode end of record response.

2.3 Nova

- Fixed DSK variable size interaction with restore.

2.4 PDP-1

- Fixed DT variable size interaction with restore.

2.5 PDP-11

- Fixed DT variable size interaction with restore.
- Fixed bug in MMR1 update (found by Tim Stark).
- Added XQ features and fixed bugs:
  o Corrected XQ interrupts on IE state transition (code by Tom Evans).
  o Added XQ interrupt clear on soft reset.
  o Removed XQ interrupt when setting XL or RL (multiple people).
  o Added SET/SHOW XQ STATS.
  o Added SHOW XQ FILTERS.
  o Added ability to split received packet into multiple buffers.
  o Added explicit runt and giant packet processing.

2.6 PDP-18B

- Fixed DT, RF variable size interaction with restore.
- Fixed MT bug in MTTR.

2.7 PDP-8

- Fixed DT, DF, RF, RX variable size interaction with restore.
- Fixed MT bug in SKTR.

2.8 HP2100

- Fixed bug in DP (13210A controller only), DQ read status.
- Fixed bug in DP, DQ seek complete.

2.9 GRI

- Fixed bug in SC queue pointer management.

3. New Features in 3.0 vs prior releases

N/A

4. Bugs Fixed in 3.0 vs prior releases

N/A

5. General Notes

WARNING: The RESTORE command has changed.  RESTORE will now
detach an attached file on a unit, if that unit did not have
an attached file in the saved configuration.  This is required
to assure that the unit flags and the file state are consistent.

WARNING: The compilation scheme for the PDP-10, PDP-11, and VAX
has changed.  Use one of the supplied build files, or read the
documentation carefully, before compiling any of these simulators.

NOVA/nova_dsk.c

@@ -25,6 +25,7 @@
 
    dsk		fixed head disk
 
+   14-Mar-03	RMS	Fixed variable capacity interaction with save/restore
    03-Mar-03	RMS	Fixed variable capacity and autosizing
    03-Oct-02	RMS	Added DIB
    06-Jan-02	RMS	Revised enable/disable support
@@ -44,6 +45,7 @@
 #define UNIT_V_AUTO	(UNIT_V_UF + 0)			/* autosize */
 #define UNIT_V_PLAT	(UNIT_V_UF + 1)			/* #platters - 1 */
 #define UNIT_M_PLAT	07
+#define UNIT_PLAT	(UNIT_M_PLAT << UNIT_V_PLAT)
 #define UNIT_GETP(x)	((((x) >> UNIT_V_PLAT) & UNIT_M_PLAT) + 1)
 #define UNIT_AUTO	(1 << UNIT_V_AUTO)
 #define UNIT_PLAT	(UNIT_M_PLAT << UNIT_V_PLAT)
@@ -184,7 +186,7 @@ if ((pulse == iopP) && ((dsk_wlk >> GET_DISK (dsk_da)) & 1)) {	/* wrt lock? */
 	return rval;  }
 
 if (pulse & 1) {					/* read or write? */
-	if (((t_addr) (dsk_da * DSK_NUMWD)) >= dsk_unit.capac) { /* inv sev? */
+	if (((uint32) (dsk_da * DSK_NUMWD)) >= dsk_unit.capac) { /* inv sev? */
 	    dev_done = dev_done | INT_DSK;		/* set done */
 	    int_req = (int_req & ~INT_DEV) | (dev_done & ~dev_disable);
 	    dsk_stat = DSKS_ERR + DSKS_NSD;		/* set status */
@@ -222,7 +224,7 @@ if (uptr->FUNC == iopP) {				/* write? */
 	for (i = 0; i < DSK_NUMWD; i++) {		/* copy sector */
 	    pa = MapAddr (0, (dsk_ma + i) & AMASK);	/* map address */
 	    *(((int16 *) uptr->filebuf) + da + i) = M[pa];  }
-	if (((t_addr) (da + i)) >= uptr->hwmark)	/* past end? */
+	if (((uint32) (da + i)) >= uptr->hwmark)	/* past end? */
 	    uptr->hwmark = da + i + 1;			/* upd hwmark */
 	dsk_ma = (dsk_ma + DSK_NUMWD + 3) & AMASK;  }
 
@@ -271,15 +273,15 @@ return SCPE_OK;
 
 t_stat dsk_attach (UNIT *uptr, char *cptr)
 {
-t_addr sz, p;
-t_addr ds_bytes = DSK_DKSIZE * sizeof (int16);
+uint32 sz, p;
+uint32 ds_bytes = DSK_DKSIZE * sizeof (int16);
 
 if ((uptr->flags & UNIT_AUTO) && (sz = sim_fsize (cptr))) {
 	p = (sz + ds_bytes - 1) / ds_bytes;
-	if (p == 0) p = 1;
-	if (p > DSK_NUMDK) p = DSK_NUMDK;  }
-else p = UNIT_GETP (uptr->flags);			/* get # plat */
-uptr->capac = p * DSK_DKSIZE;				/* set capacity */
+	if (p >= DSK_NUMDK) p = DSK_NUMDK - 1;
+	uptr->flags = (uptr->flags & ~UNIT_PLAT) |
+	    (p << UNIT_V_PLAT);  }
+uptr->capac = UNIT_GETP (uptr->flags) * DSK_DKSIZE;	/* set capacity */
 return attach_unit (uptr, cptr);
 }