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.

Interdata/id_idc.c

@@ -25,6 +25,7 @@
 
    idc		MSM/IDC disk controller
 
+   25-Apr-03	RMS	Revised for extended file support
    16-Feb-03	RMS	Fixed read to test transfer ok before selch operation
 
    Note: define flag ID_IDC to enable the extra functions of the intelligent
@@ -273,7 +274,7 @@ REG idc_reg[] = {
 		  ID_NUMDR, REG_HRO) },
 	{ URDATA (UST, idc_unit[0].STD, 16, 8, 0,
 		  ID_NUMDR, REG_RO) },
-	{ URDATA (CAPAC, idc_unit[0].capac, 10, 31, 0,
+	{ URDATA (CAPAC, idc_unit[0].capac, 10, T_ADDR_W, 0,
 		  ID_NUMDR, PV_LEFT | REG_HRO) },
 	{ HRDATA (DEVNO, idc_dib.dno, 8), REG_HRO },
 	{ HRDATA (SELCH, idc_dib.sch, 2), REG_HRO },
@@ -668,9 +669,10 @@ uint32 i, p;
 t_stat r;
 
 uptr->capac = drv_tab[GET_DTYPE (uptr->flags)].size;
-r = attach_unit (uptr, cptr);
+r = attach_unit (uptr, cptr);				/* attach unit */
+if (r != SCPE_OK) return r;				/* error? */
 uptr->CYL = 0;
-if ((r != SCPE_OK) || ((uptr->flags & UNIT_AUTO) == 0)) return r;
+if ((uptr->flags & UNIT_AUTO) == 0) return SCPE_OK;	/* autosize? */
 if (fseek (uptr->fileref, 0, SEEK_END)) return SCPE_OK;
 if ((p = ftell (uptr->fileref)) == 0) return SCPE_OK;
 for (i = 0; drv_tab[i].surf != 0; i++) {