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Old 04-24-2010, 21:44   #16
WAI
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i don't get such an error. what's your Motherboard brand/model or chippset?

also, idk if you have the re-coded (With current Value) Tcctool.exe File? HERE
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Old 04-24-2010, 22:15   #17
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Jan 10, 2008 SPECIFICATION TCC79XX
EXTERNAL MEMORY CONTROLLER REV 0.10
29-4 Preliminary
SDRAM Configuration Register (SDCFG) 0xF1000000
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
CL BW CW RC RCD WR 0 0
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
RP RW 0 0 0 0 0 0 AM 0 PPD SR
Field Name RW Reset Description
0 SR RW 0
Self refresh enable register
0 : Disabled(exit from self-refresh state)
1 : Enabled(enter self-refresh state)
Before entering self-refresh state, the instruction and
data in the SDRAM should be written back.
1 PPD RW 0
Precharge power-down mode enable
0 : Disabled, 1 : Enabled
3 AM RW 0
Address matching option
0 : BANK-RAS-CAS address order
1 : RAS-BANK-CAS address order
The address bit width for SDRAM banks is two.
11 ~ 10 RW RW 3
RAS address width configuration register
{0} : 12 bits RAS address width
{2} : 13 bits RAS address width
{1, 3} : 11 bits RAS address width
15 ~ 12 RP RW 4 Precharge-to-Refresh cycle parameter
19 ~ 18 WR RW 2 Write-to-Read wait cycle parameter
23 ~ 20 RCD RW 4 RAS to CAS cycle parameter
27 ~ 23 RC RW 10 Refresh-to-Idle cycle parameter
29 ~ 28 CW RW 2
CAS address width
{0,1} : 8 bits CAS address width
{2} : 9 bits CAS address width
{3} : 10 bits CAS address width
30 BW RW 1
SDRAM Bus width
0 : 32 bits data bus
1 : 16 bits data bus
31 CL 0
CAS latency
0 : 2 Cycles
1 : 3 Cycles
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Old 04-24-2010, 22:17   #18
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0x6A484C00 is the reset default vaule
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Old 04-24-2010, 22:20   #19
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Hmm.. I cant seem to properly install my s9's driver.
It says, "Hardware found USB Device" then "Hardware found Telechips TCC79xx VTC USB Driver"
Then when it asks me to install it, it asks for a VTCDRV installation disk

edit: do you think you could walk me through installing the driver? (just so I get to the point where you are?)
Below is what keeps happening, so I believe my driver is installed incorrectly

Code:
Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.

C:\Documents and Settings\Bhaskar>cd Desktop\tcctool

C:\Documents and Settings\Bhaskar\Desktop\tcctool> tcctool -d cowons9  COWON_S9_F
W.BIN
tcctool v0.1 - (C) 2007 Dave Chapman
This is free software; see the source for copying conditions.  There is  NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR  PURPOSE.

[INFO] Using device "Cowon S9"
[INFO] Searching for TCC device...
[ERR]  Could not find any USB busses.

C:\Documents and Settings\Bhaskar\Desktop\tcctool>
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Last edited by Adapada; 04-24-2010 at 22:35..
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Old 04-25-2010, 02:34   #20
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To Adapada
Add in tcc.info
"TCC7901 usb-boot mode"=LIBUSB_DEV, USB\VID_140E&PID_B057
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Old 04-25-2010, 05:51   #21
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Like this:
Code:
;--------------------------------------------------------------------------
; Devices
;--------------------------------------------------------------------------

[Devices]
"TCC77x usb-boot mode"=LIBUSB_DEV, USB\VID_140E&PID_B021
"TCC7801 usb-boot mode"=LIBUSB_DEV, USB\VID_140E&PID_B011
"TCC7901 usb-boot mode"=LIBUSB_DEV, USB\VID_140E&PID_B057

[Devices.NT]
"TCC77x usb-boot mode"=LIBUSB_DEV, USB\VID_140E&PID_B021
"TCC7801 usb-boot mode"=LIBUSB_DEV, USB\VID_140E&PID_B011
"TCC7901 usb-boot mode"=LIBUSB_DEV, USB\VID_140E&PID_B057

[Devices.NTAMD64]
"TCC77x usb-boot mode"=LIBUSB_DEV, USB\VID_140E&PID_B021
"TCC7801 usb-boot mode"=LIBUSB_DEV, USB\VID_140E&PID_B011
"TCC7901 usb-boot mode"=LIBUSB_DEV, USB\VID_140E&PID_B057
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Old 04-25-2010, 07:55   #22
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@dfkt, could you give that Info. to him? i got work but i'll talk to linuxstb when i get home

Quote:
Edit: nm, i'll just contact when i can. no rush
@thinpad, why didn't that last value work?
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Old 04-25-2010, 17:34   #23
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Quote:
@thinpad, the developer of tcctool can't help. he doesn't know anything about SDRAM Config
again, that value didn't help
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Old 04-26-2010, 05:51   #24
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Quote:
Originally Posted by Who Am I? View Post
again, that value didn't help
I do not have a S9. What i have is a TCC7901 MP4.
You need get the datasheet of the SDRAM used in S9. From the SDRAM datasheet you can get the value needed to compose SDCFG.
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Old 04-26-2010, 07:57   #25
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thanks for clearing out your sources of Info. (Thought you had the Datasheet dude)
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Old 04-30-2010, 18:58   #26
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The S9 SDRAM part number is HY5S7B2AL.
Also, if you dissemble the Cowon firmware, you can find the area where they setup the SDRAM for loading. The SDCFG register is at address 0xF100 0000. I am no expert on assembler but here is the code if somebody quicker than I wants to decipher it:

Code:
     4f4:       e3a014f1        mov     r1, #-251658240 ; 0xf1000000
     4f8:       e591001c        ldr     r0, [r1, #28]
     4fc:       e1a00720        mov     r0, r0, lsr #14
     500:       e1a00700        mov     r0, r0, lsl #14
     504:       e3800e80        orr     r0, r0, #2048   ; 0x800
     508:       e3800041        orr     r0, r0, #65     ; 0x41
     50c:       e581001c        str     r0, [r1, #28]
Edit:
Actually, I'm pretty sure that's not the right area of the firmware. But it's freely downloadable from their site if you want to grep around for that hex address. There are a couple of other promising areas but they're too big to post (plus I believe I am in violation of Cowon's TOS even by posting what I did).\

Edit2:
Here is a pic of the SDRAM chip:

Last edited by joeyg; 05-01-2010 at 17:46..
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Old 05-01-2010, 19:13   #27
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i want to thank to all who have taking their time in trying to help out. no luck as of yet though. how could this sort of Info. help out?
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Old 05-01-2010, 20:23   #28
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There is no public datasheet for the TCC7901 proc, but here is the relevant info on SDCFG:

32 bits
Code:
+-31---30---29---28---27---26---25---24---23---22---21---20---19---18---17---16-+
| CL | BW | CW      | RC                | RCD               | WR      |  0 |  0 |
+-15---14---13---12---11---10---09---08---07---06---05---04---03---02---01---00-+
| RP                | RW      |  0 |  0 |  0 |  0 |  0 |  0 | AM |  0 | PPD| SR |
+-------------------------------------------------------------------------------+
Where the fields are:
CL CAS latency (0 = 2 cycles, 1 = 3 cycles)
BW Bus width (0 = 32-bit, 1, = 16-biT)
CW CAS address width (0, 1 = 8-bit, 2 = 9-bit, 3 = 10-bit)
RC Refresh-to-idle cycle parameter
RCD Refresh-to-CAS cycle parameter
WR Write-to-read cycle parameter
RP Precharge-to-refresh cycle parameter
RW RAS address width (0 = 12 bits, 1 = 11 bits, 2 = 13 bits)
AM Address matching order (0 = BANK-RAS-CAS, 1 = RAS-BANK-CAS)
PPD Precharge power-down enabled
SR Self-refresh enabled

I'm not sure what all those mean, but bits 0-3 are zero for every existing configuration in tcctool.c, for example, so I think we should leave those alone.

Also, I think that the "cycle parameter" fields are cycle counts, where 1 cycle at 500Mhz is 20ns.

Edit:
I did it! I unbricked my S9 with the SDCFG 0xa1102800:
Code:
    {"cowons9",  "Cowon S9",                     0xb057, 0x20000000, 0xa1102800 },
Good luck to you.

Last edited by joeyg; 05-01-2010 at 21:05..
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Old 05-01-2010, 23:01   #29
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Darn!
I sent my s9 in earlier today!
Nice job on getting it unbricked. I think you should post a tutorial for those who havent sent theirs in!
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Old 05-01-2010, 23:45   #30
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I have the original 8Gb model. I'd like to first see if it works for other ones.
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