C++ (Cpp) sim_bin_getc Examples

Example #1

t_stat sim_load_bin (FILE *fi)
{
int32 hi, lo, wd, csum, t;
uint32 field, newf, origin;

do {                                                    /* skip leader */
    if ((hi = sim_bin_getc (fi, &newf)) == EOF)
        return SCPE_FMT;
    } while ((hi == 0) || (hi >= 0200));
csum = origin = field = newf = 0;                       /* init */
for (;;) {                                              /* data blocks */
    if ((lo = sim_bin_getc (fi, &newf)) == EOF)         /* low char */
        return SCPE_FMT;
    wd = (hi << 6) | lo;                                /* form word */
    t = hi;                                             /* save for csum */
    if ((hi = sim_bin_getc (fi, &newf)) == EOF)         /* next char */
        return SCPE_FMT;
    if (hi == 0200) {                                   /* end of tape? */
        if ((csum - wd) & 07777)                        /* valid csum? */
            return SCPE_CSUM;
        return SCPE_OK;
        }
    csum = csum + t + lo;                               /* add to csum */
    if (wd > 07777)                                     /* chan 7 set? */
        origin = wd & 07777;                            /* new origin */
    else {                                              /* no, data */
        if ((field | origin) >= MEMSIZE) 
            return SCPE_NXM;
        M[field | origin] = wd;
        origin = (origin + 1) & 07777;
        }
    field = newf;                                       /* update field */
    }
return SCPE_IERR;
}

Example #2

File: pdp8_sys.c Project: B-Rich/simh

t_stat sim_load_bin (FILE *fi)
{
int32 hi, lo, wd, csum, t;
uint32 field, newf, origin;
int32 sections_read = 0;

for (;;) {
    csum = origin = field = newf = 0;                   /* init */
    do {                                                /* skip leader */
        if ((hi = sim_bin_getc (fi, &newf)) == EOF) {
            if (sections_read != 0) {
                sim_printf ("%d sections sucessfully read\n\r", sections_read);
                return SCPE_OK;
                } 
            else
                return SCPE_FMT;
            }
        } while ((hi == 0) || (hi >= 0200));
    for (;;) {                                          /* data blocks */
        if ((lo = sim_bin_getc (fi, &newf)) == EOF)     /* low char */
            return SCPE_FMT;
        wd = (hi << 6) | lo;                            /* form word */
        t = hi;                                         /* save for csum */
        if ((hi = sim_bin_getc (fi, &newf)) == EOF)     /* next char */
            return SCPE_FMT;
        if (hi == 0200) {                               /* end of tape? */
            if ((csum - wd) & 07777) {                  /* valid csum? */
                if (sections_read != 0)
                    sim_printf ("%d sections sucessfully read\n\r", sections_read);
                return SCPE_CSUM;
                }
            if (!(sim_switches & SWMASK ('A')))        /* Load all sections? */
                return SCPE_OK;
            sections_read++;
            break;
            }
        csum = csum + t + lo;                           /* add to csum */
        if (wd > 07777)                                 /* chan 7 set? */
            origin = wd & 07777;                        /* new origin */
        else {                                          /* no, data */
            if ((field | origin) >= MEMSIZE) 
                return SCPE_NXM;
            M[field | origin] = wd;
            origin = (origin + 1) & 07777;
            }
        field = newf;                                   /* update field */
        }
    }
return SCPE_IERR;
}