godzil/quickdev16
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

o add snes diskio interface

Browse Source
This commit is contained in:
David Voswinkel
2009-05-28 17:49:50 +02:00
parent a9df4311b4
commit d69d2bf398
13 changed files with 3812 additions and 1048 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
tools/bsnes/chip/fatfs/diskio.h
View File

@@ -48,7 +48,7 @@ void disk_timerproc (void);
#define STA_NOINIT 0x01 /* Drive not initialized */
#define STA_NODISK 0x02 /* No medium in the drive */
#define STA_PROTECT 0x04 /* Write protected */
#define STA_VOID 0xff
/* Command code for disk_ioctrl() */

40
tools/bsnes/chip/fatfs/fatfs.cpp
View File

@@ -4,14 +4,9 @@
#include "diskio.h"
#include "config.h"
#define CMD_INIT 0x00
#define CMD_READ 0x01
#define CMD_WRITE 0x02
#define CMD_NONE 0xff
#define SHARED_SIZE 512
#define SHARED_ADDR 0x3f0000
void FATFS::init() {
command = CMD_NONE;
@@ -23,16 +18,16 @@ void FATFS::init() {
void FATFS::enable() {
// command
memory::mmio.map(0x3010, *this);
memory::mmio.map(MMIO_CMD, *this);
// sector
memory::mmio.map(0x3011, *this);
memory::mmio.map(0x3012, *this);
memory::mmio.map(0x3013, *this);
memory::mmio.map(0x3014, *this);
// offset
memory::mmio.map(0x3015, *this);
memory::mmio.map(MMIO_SECTOR01, *this);
memory::mmio.map(MMIO_SECTOR02, *this);
memory::mmio.map(MMIO_SECTOR03, *this);
memory::mmio.map(MMIO_SECTOR04, *this);
// count
memory::mmio.map(MMIO_COUNT, *this);
// return value
memory::mmio.map(0x3016, *this);
memory::mmio.map(MMIO_RETVAL, *this);
}
void FATFS::power() {
@@ -57,7 +52,7 @@ void FATFS::pushMem() {
uint8 FATFS::mmio_read(unsigned addr) {
addr &= 0xffff;
if (addr == 0x3016){
if (addr == MMIO_RETVAL){
printf("FATFS::mmio_read retal=%i\n",retval);
return retval;
}
@@ -89,13 +84,13 @@ void FATFS::mmio_write(unsigned addr, uint8 data) {
}
fflush(stderr);
}
if (addr >= 0x3011 && addr <= 0x3014){
sector = data << ( (3 - ( addr - 0x3011)) << 3);
printf("FATFS::mmio_write set sector: byte=%i val=%i sector=%i \n",(3 - ( addr - 0x3011)),data,sector);
if (addr >= MMIO_SECTOR01 && addr <= MMIO_SECTOR04){
sector = data << ( (3 - ( addr - MMIO_SECTOR01)) << 3);
printf("FATFS::mmio_write set sector: byte=%i val=%i sector=%i \n",(3 - ( addr - MMIO_SECTOR01)),data,sector);
}
if (addr == 0x3015){
if (addr == MMIO_COUNT){
count = data;
printf("FATFS::mmio_write set offset: countr=%i \n",count);
printf("FATFS::mmio_write set count: countr=%i \n",count);
if (command == CMD_READ) {
retval = disk_read (0, (BYTE*)scratch_buffer, sector, count);
if (!retval)
@@ -107,8 +102,9 @@ void FATFS::mmio_write(unsigned addr, uint8 data) {
printf("FATFS::mmio_write set offset: no command to trigger \n");
}
}
if (addr == 0x3016){
printf("FATFS::mmio_write reg 0x3016 retav is RW\n");
if (addr == MMIO_RETVAL){
printf("FATFS::mmio_write reg 0x3016 reset\n");
retval = STA_VOID;
}
}