Dex Drive Support

[sairuk]

Looking at support for physical Dex Drives using the linux-dexdrive project to attach memory cards as block devices

We can attach and dump the block device to a raw image with dd. Not currently sure where it will be usable thereafter

There is a tool called psxmemcardmgr that looks good but would need some updates to be used by us.

Projects

• https://github.com/fbriere/linux-dexdrive
• https://github.com/raphnet/psxmemcardmgr

Issues

• Command-line only equivalent? raphnet/psxmemcardmgr#2
• linux-dexdrive block device compatibility raphnet/psxmemcardmgr#5

root@raspberrypi:/opt/retronas/scripts# dexattach --check --verbose /dev/ttyUSB0
Opening /dev/ttyUSB0 and setting line discipline
Device number is 254:0

root@raspberrypi:/opt# cat /dev/dexdrive0 | hd | head -n10
00000000  4d 43 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |MC..............|
00000010  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
*
00000070  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 0e  |................|
00000080  51 00 00 00 00 60 00 00  01 00 42 45 53 4c 45 53  |Q....`....BESLES|
00000090  2d 30 32 39 30 38 43 5a  48 50 56 42 30 00 00 00  |-02908CZHPVB0...|
000000a0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
*
000000f0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 05  |................|
00000100  52 00 00 00 00 00 00 00  02 00 00 00 00 00 00 00  |R...............|
root@raspberrypi:/opt# 

root@raspberrypi:/opt# lsblk
NAME        MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
mmcblk0     179:0    0 14.8G  0 disk 
├─mmcblk0p1 179:1    0  256M  0 part /boot
└─mmcblk0p2 179:2    0 14.6G  0 part /
dexdrive0   254:0    1  128K  0 disk 
root@raspberrypi:/opt# 

dd if=/dev/dexdrive0 of=dex_card0.img

root@raspberrypi:/opt# cat dex_card0.img | hd | head -n10
00000000  4d 43 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |MC..............|
00000010  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
*
00000070  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 0e  |................|
00000080  51 00 00 00 00 60 00 00  01 00 42 45 53 4c 45 53  |Q....`....BESLES|
00000090  2d 30 32 39 30 38 43 5a  48 50 56 42 30 00 00 00  |-02908CZHPVB0...|
000000a0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
*
000000f0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 05  |................|
00000100  52 00 00 00 00 00 00 00  02 00 00 00 00 00 00 00  |R...............|
root@raspberrypi:/opt# 

see the dexdrive branch for progress

[sairuk]

the dumped cards are good, can be read with PSX Memory Card Manager

[sairuk]

The tool dumps consistently with dd

732f0120d7ecbada73932373b1c94298  /data/retronas/dex_card0.mc
f4ce31a11d2e10bcafee53a93365b694  /data/retronas/dex_card1.mc
732f0120d7ecbada73932373b1c94298  /data/retronas/dex_card2.mc
f0804e982990c48b233110f6b7f7278e  /data/retronas/dex_card3.mc
45178e15cc7730654a5490fe29b943d8  /data/retronas/dex_card4.mc
dbde6da31e2be8dd09158425ed66551a  /data/retronas/dex_card5.mc
270c671917a53709a236e6ab0da40ffb  /data/retronas/dex_card6a.mc
270c671917a53709a236e6ab0da40ffb  /data/retronas/dex_card6b.mc
270c671917a53709a236e6ab0da40ffb  /data/retronas/dex_card6c.mc
270c671917a53709a236e6ab0da40ffb  /data/retronas/dex_card6d.mc
270c671917a53709a236e6ab0da40ffb  /data/retronas/dex_card6.mc
c76acb99bb708ce24b99d1e1dff7bc54  /data/retronas/dex_card7a.mc
c76acb99bb708ce24b99d1e1dff7bc54  /data/retronas/dex_card7.mc
cbf548e95d507e9b84880ce69cbbb2a2  /data/retronas/dex_card8.mc
b2d7bfb54e03cb2374010c4b267b815c  /data/retronas/dex_card9.mc

[sairuk]

you can take the images and write them back to a card with dd and they will work on hw and redump consistently

original

c76acb99bb708ce24b99d1e1dff7bc54  /data/retronas/dex_card_tmp.mc

replacement card image

732f0120d7ecbada73932373b1c94298  /data/retronas/dex_card0.mc

apply the image

dd if=/data/retronas/dex_card0.mc of=/dev/dexdrive0

redump

732f0120d7ecbada73932373b1c94298  /data/retronas/dex_card_tmp_redump.mc

[sairuk]

i've got one 3rd party card that isn't read atm see fbriere/linux-dexdrive#1

[sairuk]

another potential cli app for use with dumped images https://github.com/G4Vi/psx_mc_cli

/data/retronas/dex_card_tmp.mc:
SRTLINK  BESLES-02908CZHPVB0  0x0001  3 blocks            xor 0x5
MIDLINK                       0x0002  0 blocks            xor 0x50
ENDLINK                       0xFFFF  0 blocks            xor 0x53
INUSE    BASLUS-01066CARAG01  0xFFFF  1 blocks            xor 0x20
INUSE    BESLES-02908TKNKPAM  0xFFFF  1 blocks            xor 0x27
INUSE    BESLES-02908STMLPAO  0xFFFF  1 blocks            xor 0x39
MIDLINK                       0x0008  0 blocks            xor 0x5A
ENDLINK                       0xFFFF  0 blocks            xor 0x53
INUSE    BESLES-02908CUIKGBD  0xFFFF  1 blocks            xor 0x34
INUSE    BESLES-02908IGIAPBC  0xFFFF  1 blocks            xor 0x36
INUSE    BESLES-02908CJWMPAU  0xFFFF  1 blocks            xor 0x36
INUSE    BESLES-02908JN^TPBE  0xFFFF  1 blocks            xor 0x38
INUSE    BESCES-00867FF7-S01  0xFFFF  1 blocks            xor 0x2C
INUSE    BESCES-00867FF7-S02  0xFFFF  1 blocks            xor 0x2F

this tool can also interogate the block device directly

$ lsmc /dev/dexdrive0 
/dev/dexdrive0:
SRTLINK  BESLES-02908CZHPVB0  0x0001  3 blocks            xor 0x5
MIDLINK                       0x0002  0 blocks            xor 0x50
ENDLINK                       0xFFFF  0 blocks            xor 0x53
INUSE    BASLUS-01066CARAG01  0xFFFF  1 blocks            xor 0x20
INUSE    BESLES-02908TKNKPAM  0xFFFF  1 blocks            xor 0x27
INUSE    BESLES-02908STMLPAO  0xFFFF  1 blocks            xor 0x39
SRTLINK  BESLES-02908SPXZVAR  0x0007  3 blocks            xor 0x62
MIDLINK                       0x0008  0 blocks            xor 0x5A
ENDLINK                       0xFFFF  0 blocks            xor 0x53
INUSE    BESLES-02908CUIKGBD  0xFFFF  1 blocks            xor 0x34
INUSE    BESLES-02908IGIAPBC  0xFFFF  1 blocks            xor 0x36
INUSE    BESLES-02908CJWMPAU  0xFFFF  1 blocks            xor 0x36
INUSE    BESLES-02908JN^TPBE  0xFFFF  1 blocks            xor 0x38
INUSE    BESCES-00867FF7-S01  0xFFFF  1 blocks            xor 0x2C
INUSE    BESCES-00867FF7-S02  0xFFFF  1 blocks            xor 0x2F

filename             title                                      blockcount
BESLES-02908CZHPVB0  ＴＨＰＳ２　ＲＥＰＬＡＹー　ＣＴＰ                        3

[sairuk]

dumping functionality merged into testing