C++ (Cpp) iec_open_read_sequential示例

示例#1

文件： vdrive-iec.c 项目： EdCornejo/emu-ex-plus-alpha

static int iec_open_read_directory(vdrive_t *vdrive, unsigned int secondary,
                                   cbmdos_cmd_parse_t *cmd_parse)
{
    int retlen;
    bufferinfo_t *p = &(vdrive->buffers[secondary]);

    if (secondary > 0) {
        return iec_open_read_sequential(vdrive, secondary, vdrive->Header_Track, vdrive->Header_Sector);
    }

    vdrive_alloc_buffer(p, BUFFER_DIRECTORY_READ);

    retlen = vdrive_dir_first_directory(vdrive, cmd_parse->parsecmd, cmd_parse->parselength, CBMDOS_FT_DEL, p);

    p->length = (unsigned int)retlen;
    p->bufptr = 0;

    return SERIAL_OK;
}

示例#2

static int iec_open_read(vdrive_t *vdrive, unsigned int secondary)
{
    int type;
    unsigned int track, sector;
    bufferinfo_t *p = &(vdrive->buffers[secondary]);
    BYTE *slot = p->slot;

    if (!slot) {
        vdrive_iec_close(vdrive, secondary);
        vdrive_command_set_error(vdrive, CBMDOS_IPE_NOT_FOUND, 0, 0);
        return SERIAL_ERROR;
    }

    type = slot[SLOT_TYPE_OFFSET] & 0x07;
    track = (unsigned int)slot[SLOT_FIRST_TRACK];
    sector = (unsigned int)slot[SLOT_FIRST_SECTOR];

    /* Del, Seq, Prg, Usr (Rel not supported here).  */
    if (type != CBMDOS_FT_REL)
        return iec_open_read_sequential(vdrive, secondary, track, sector);

    return SERIAL_ERROR;
}