Ex-link in service mode on A series(SH4)


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See Getting access to u-boot (SH4) how to connect a Service Cable - ExLink. Provided that you have working Ex-link connection you can enter following commands (based on T-RBYDEUC firmware)

Debug Menu

Let serial line calm down from huge boot messages and type

debug [ Enter ]

Very complex menu tree follows. You can do lot of things there, especially screw up your TV completely.

BE VERY CAREFUL AND ABSOLUTELY SURE YOU KNOW WHAT YOU ARE DOING


Other Debug commands

I doubt about usefulness of following commands:

^ [ Enter ]

CPU reset (TV screen is shifted because GPU is not properly initialized) - same as micom 143.


keydebug [ Enter ]
keyrec [ Enter ]
keyexit [ Enter ]

Repeats periodically sequence of simulated key presses.


Simulated remote control

Enter one character code followed by [ Enter ] to simulate a remote control key press.

Character entered to Ex-link RC command code (hex) Command
1 2 3 4 5 6 7 8 9 0 4 5 6 8 9 0xa 0xc 0xd 0xe 0x11 numeric keys
space 0x3b Factory (not available on standard RC)
`
s
! 0x65 left
# 0x61 down
$ 0x62 right
. 0x19
< 0x20
@ 0x60 up
D 0x43 ?? shows channel number
N 0x32 ?? not avail
Z 0x0f mute
d 0x10 prog-
e 0x68 enter
f 0x44 favorite channel?
g 0x4f guide
i 0x1f info
l 0x0b vol-
m 0x1a menu
n 0x33 ?? not available
p 0x13 prev-ch
r 0x07 vol+
u 0x12 prog+
v 0x01 source
x 0x2d exit
z 0x25 subt