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SCP: Remove ASCII source code character set dependency

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Provide reasonable behavior on any platform which doesn't use ASCII as a character set.  Method suggested by Dave G4UGM.
This commit is contained in:
Mark Pizzolato 2015-08-03 12:35:08 -07:00
parent a747c0f860
commit 7c7b44e409
3 changed files with 17 additions and 4 deletions
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12
scp.c
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@ -1845,6 +1845,18 @@ return 0;
}
#endif
/* Convert switch letter to bit mask */
int32 sim_swmask (int switch_ch)
{
static char *letters = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
char *index = strchr (letters, switch_ch);
if (index)
return (1u << (int)(index - letters));
return 0; /* shouldn't happen */
}
t_stat process_stdin_commands (t_stat stat, char *argv[]);
/* Main command loop */

1
scp.h
View file

@ -116,6 +116,7 @@ t_stat sim_run_boot_prep (void);
double sim_gtime (void);
uint32 sim_grtime (void);
int32 sim_qcount (void);
int32 sim_swmask (int switch_ch);
t_stat attach_unit (UNIT *uptr, char *cptr);
t_stat detach_unit (UNIT *uptr);
t_stat assign_device (DEVICE *dptr, char *cptr);

8
sim_defs.h
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@ -278,6 +278,10 @@ typedef uint32 t_addr;
#define SIM_SW_REG (1u << 28) /* register value */
#define SIM_SW_STOP (1u << 29) /* stop message */
/* Convert switch letter to bit mask */
#define SWMASK(x) sim_swmask ((int)x)
/* Simulator status codes
0 ok
@ -358,10 +362,6 @@ typedef uint32 t_addr;
#define KBD_LIM_WAIT(x) (((x) > KBD_MAX_WAIT)? KBD_MAX_WAIT: (x))
#define KBD_WAIT(w,s) ((w)? w: KBD_LIM_WAIT (s))
/* Convert switch letter to bit mask */
#define SWMASK(x) (1u << (((int) (x)) - ((int) 'A')))
/* String match - at least one character required */
#define MATCH_CMD(ptr,cmd) ((NULL == (ptr)) || (!*(ptr)) || strncmp ((ptr), (cmd), strlen (ptr)))