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simh.simh/ALTAIR/altair_defs.h
Peter Kooiman ef8f4f53a2 simulators with global variables PC, SP and BC: Avoid name space collisions.
Avoid potential name space collision for the global variables PC, SP and BC
when readline is dynamically loaded.  For some unknown reason, ncurses
exports these internal variables which may be needed in the context of
how ncurses is used by readline implementations.  In any case, these
variable names are common in simulators, so there is an undesired
interaction between simulator internal variables and the simplest
solution is to rename these simulator global variables where they exist.
Another alternative is to merely declare these variables static when
they happen to only be referenced in a single simulator source module.
2025-04-09 13:56:27 -10:00

46 lines
2.2 KiB
C

/* altair_defs.h: MITS Altair simulator definitions
Copyright (c) 1997-2005, Charles E. Owen
Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and associated documentation files (the "Software"),
to deal in the Software without restriction, including without limitation
the rights to use, copy, modify, merge, publish, distribute, sublicense,
and/or sell copies of the Software, and to permit persons to whom the
Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
ROBERT M SUPNIK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Except as contained in this notice, the name of Charles E. Owen shall not be
used in advertising or otherwise to promote the sale, use or other dealings
in this Software without prior written authorization from Charles E. Owen.
*/
#include "sim_defs.h" /* simulator defns */
/* Memory */
#define MAXMEMSIZE 65536 /* max memory size */
#define MEMSIZE (cpu_unit.capac) /* actual memory size */
#define ADDRMASK (MAXMEMSIZE - 1) /* address mask */
#define MEM_ADDR_OK(x) (((uint32) (x)) < MEMSIZE)
/* Simulator stop codes */
#define STOP_RSRV 1 /* must be 1 */
#define STOP_HALT 2 /* HALT */
#define STOP_IBKPT 3 /* breakpoint */
#define STOP_OPCODE 4
/* Rename of global BC and SP variables to avoid namespace conflicts on some platforms */
#define BC BC_Global
#define SP SP_Global