3DO Development Repo

All ints are big endian, pre-converted by the firmware

ODE expects boot.iso to be present on the root dir of at least one medium. If no “boot.iso” present, the ODE will just blink LEDs. /USB takes priority if both are present.

ODE includes base boot.iso in flash. If any of mounted partitions (sd or usb or all) contains boot.iso, the one with freshest built FS prevails. ODE uses label→dl_VolumeUniqueIdentifier as unix timestamp.

boot.iso must have bootable, signed image, containing ode driver (signed with 3do keys, priority set) and menu app.

No ID on the bus present, don't implement XBUS Dev proxy in FPGA.

• on 0x83 report mfg_id=MEI (0x10), dev_num=CDROM (0x1) no DRV bit in status!
• on 0x8e for simple ode report status command error, for full featured, follow the ROMTAGs structure for dipir.
• new cmd :
  • 0xc0 [l3] [l2] [l1] [l0] - change current TOC root to L (L=0 - root) - status[0]=error code, selects either devlist if more than one device or partition present. example :
    • only sd is mounted with 1 partition : “/ = root of the sdcard”.
    • sd mounted with 2 partitions : “/sd0 /sd1”.
    • usb is mounted with 1 partition : “/ = root of usb device”
    • usb with 2 partitions, sd with 1 partitions : “/sd /usb0 /usb1”
    • list index starts from 0x00000001 !!!!
  • 0xc1 [t3] [t2] [t1] [t0] [X1] [X0] - read TOC entries starting from T. status[0]=error code, status[1]=last entry flag. status - 16bytes of entry, starting from offset X
  • 0xc2 [t3] [t2] [t1] [t0] [X1] [X0] - read description for given TOC entry. status[0] = error code. status are 16bit of entry, starting from offset X
  • 0xc3 - clear current playlist. status[0] = error code
  • 0xc4 [t3] [t2] [t1] [t0] - add TOC to the playlist, status[0] = error code, status[1][2][3][4] = current playlist count
  • 0xc5 - launch playlist. status[0] = error code
  • 0xc6 [t3] [t2] [t1] [t0] [op] - open toc id (file) for operation : op= 0x1 – read, op=0x2 –write, op=0x3- create (get ascii-z filename from generic buffer), returns toc id for created.
  • 0xc7 [o3][o2][o1][o0] [se] - file seek operation (se) to offset OO
  • 0xc8 [l1][l0] - set buffer size for file operations, tells byte count is IN the buffer for write op, or byte count for READ op to read. This completes the operation immediately – as if calling read/write. status [1][2] = bytes written/read;
  • 0xc9 [o1][o0] [b0][b1][b2][b3] – write 4 bytes to file buffer at offset OOOO.
  • 0xca [o1][o0] [ct] - reads ct bytes (up to 16) from file buffer at offset OOOO. bytes are returned in status.

3 devices on the XBUS Bus:

• dev 1 = MEI CDRom (read above)
• dev 2 = RAM Depot : on 0x83 report mfg_id=3DO (0x1000), dev_num=Depot (0x30) no DRV bit in status! Make sure to include depot driver into the boot.iso!
• dev 3 = Nicky

• CMD Read 0x20 xx xx xx xx LL LL : read LLLL bytes from XXXXXXXX address
• CMD Write 0x21 xx xx xx xx LL LL : write LLLL bytes to XXXXXXXX address

0x0c000000 : register base

0x80000000 : ram base. 256kbytes

0x00000000 : rom base : 512kbytes

RFIFO - ode to 3do data fifo, 2048 bytes (refill required for CDDA/CDXA)

WFIFO - 3do to ode data fifo, 512 bytes (pre-fill before issuing the command, mind W flags)

CMDFIFO - 7 bytes precisely. Abort is handled as soon as it arrives.

STATFIFO - 16 bytes

TBD

0xc0 0 0 0 0 (change to device root).

0xc1 0 0 0 0 (start from local root) :

0x10 0 0 0 0 0 0 = read 2048 bytes of TOCs. indexed by “MSF” .

assuming got back:

[0] .flags=TOC_FLAG_DIR, .toc_id=0x1, .name=“usb”;

[1] .flags=TOC_FLAG_DIR, .toc_id=0x2, .name=“sd”;

[2] .flags=TOC_FLAG_INVALID

listing is : /usb (dir or mountpoint), /sd (dir or mountpoint).

user selected “/sd” :

0xc0 00 00 00 02 change to new TOC 0xc1 00 00 00 00 start reading from local root

0x10 0 0 0 0 0 0 = read 2048 bytes of TOCs. indexed by “MSF” .

assuming got back:

[0] .flags=TOC_FLAG_FILE, .toc_id=0x1, .name=“test.iso”;

[1] .flags=TOC_FLAG_DIR, .toc_id=0x2, .name=“some dir”;

[2] .flags=TOC_FLAG_INVALID

listing is : /sd/test.iso (file), /sd/some dir (dir).

user selected “/sd/some dir”

0xc0 00 00 00 02 change to new TOC 0xc1 00 00 00 00 start reading from local root

0x10 0 0 0 0 0 0 = read 2048 bytes of TOCs. indexed by “MSF” .

assuming got back:

[0] .flags=TOC_FLAG_FILE, .toc_id=0x1, .name=“test2.iso”;

[1] .flags=TOC_FLAG_INVALID

listing is : /sd/some dir/test2.iso (file).

user selected “..” – level up

0xc0 ff ff ff ff change to new TOC (return to previous) 0xc1 00 00 00 00 start reading from local root

0x10 0 0 0 0 0 0 = read 2048 bytes of TOCs. indexed by “MSF” .

[0] .flags=TOC_FLAG_FILE, .toc_id=0x1, .name=“test.iso”;

[1] .flags=TOC_FLAG_DIR, .toc_id=0x2, .name=“some dir”;

[2] .flags=TOC_FLAG_INVALID

user selected “test.iso” as quick launch:

0xc3

0xc4 00 00 00 01

0xc5

#define TOC_FLAG_FILE      0x1
#define TOC_FLAG_DIR       0x2
#define TOC_FLAG_INVALID   0xffffffff

typedef struct{
    uint32_t flags;
    uint32_t toc_id;  //local toc id
    uint32_t name_length; //strlen
    char name[name_length+1] ; //0 terminated
}toc_entry;

#define FLAG_DESC_PRESENT         1
#define FLAG_BANNER_PRESENT       2
#define FLAG_TYPE_MASK            0xff00
#define FLAG_TYPE_OPERA_DISC      0x0100
#define FLAG_TYPE_CDDA            0x0200
#define FLAG_TYPE_CDXA_PHOTO      0x0300
#define FLAG_TYPE_CDXA_VIDEO      0x0400
#define FLAG_TYPE_OPERA_UNSIGNED  0x0500

typedef struct{
    uint32_t flags;

    uint32_t desc_len; //if FLAG_DESC_PRESENT is set
    char description[desc_len+1]; //0 terminated

    uint32_t banner_len; //if FLAG_BANNER_PRESENT is set
    char banner[banner_len]; //actual banner CEL with proper CCB
}toc_description;