Zilog EZ80F91AZA - Manual (Page 21)

UM017914-1211 Zilog File System Configuration
Zilog File System
User Manual
11
An example of volume configuration for RAM and Flash is provided in the code segment
that follows. Configuration of the volume must be stored into the
g_zfs_cfg variable
that is present in the ZFS_Conf.c file.
typedef struct
{
INT8 vol_name[ ZFS_MAX_VOL_NAME_LEN + 1] ;
UINT8 vol_type ; // ZFS_VOL_RAM,
ZFS_VOL_INTFLASH,
// ZFS_VOL_EXTFLASH
UINT8* vol_addr; // starting address of volume.
UINT32 vol_size ; // in bytes
UINT vol_blks ; // number of blocks present in

// the volume. (for RAM it
// will be 1, for Flash
// related to the erasable
UINT vol_secs ; // units number of sectors
// function pointers for all

// driver entries and other routines that require the different
// search algorithm function pointers for all devices.
DRV_INIT pfn_drv_init ;
DRV_READ pfn_drv_read ;
DRV_WRITE pfn_drv_write ;
DRV_ERASE pfn_drv_erase ;
DRV_CLOSE pfn_drv_close ;
// function pointers for Zilog File System routines
} ZFS_CONFIG_t, *PZFS_CONFIG_t ;

Sample Zilog File System Configuration
The sample Zilog File System configuration contains two volumes:
•
One volume resides in Flash (EXTF) that starts at address location 0x120000 , with 7
blocks and a volume size of 0xE0000
•
One volume resides in RAM (RAMF) that starts at address location 0xB80000 , with 1
block and a volume size of 0x80000

System-wide, 20 file open instances can be present at a time, and 50 directories can be cre-
ated throughout the system.