Memory Map / docs for patching/programming an SL45(i) - GSM-Forum

adancau · 06-16-2004, 08:44

Hi everyone,

I'm interested in learning how to create patches for the SL45(i) (FW56). I'd like to know what to use to write the code (I suppose it should be ASM - in this case, what CPU does the SL45 use?), and find some docs on the phone memory map (important addresses, locations, variables etc) and programming guides if possible.

Thank you for your help.
Andrei

adancau · 06-25-2004, 14:05

Is there at least an website that has some information on SL45 programming? Tried Google, but I don't seem to find any.

rc-flitzer · 06-25-2004, 14:58

Here is some information (delete the "_"):
http://mamaich._f_u_c_k_r_u_.net/sl45i
Then you have to know how C166-Assembler works (C166 is the processor in mobile phone), you can google for that.
Hope that helps. Otherwise, just ask!

adancau · 06-25-2004, 20:05

thanks, much appreciated. if I manage to do anything I'll post here

Kind regards,
Andrei

adancau · 06-26-2004, 10:16

Quick question - is there an emulator that can be used with a custom firmware file to which to apply patches? I don't want to try stuff directly on my phone.

rc-flitzer · 06-26-2004, 17:16

No, there's no real emulator. But you can test it without danger (99,9%) at your own mobile phone. Use the program AT+CGSN Debugger, latest version 1.5.7. You can download it from www.gsm-dev.com or www.gsm-dev.de (one of these links isn't working). It's good tool, and you can test your patches in RAM (e.g. beginning with 0x018200 is a free RAM area). Or you can search the RAM. Is a good tool.

Then another good idea is to apply the patch "switch between atcgsn and mamaich patch" (or similar), so you can switch between the possibility of using atcgsn-debugger and the online patching mode from vklay (if you want to test/apply your patch in the flash instead of RAM).

06-16-2004, 08:44	#1 (permalink)
adancau Freak Poster Join Date: Jun 2004 Location: Romania Age: 43 Posts: 156 Member: 67838 Status: Offline Thanks Meter: 0	Memory Map / docs for patching/programming an SL45(i) Hi everyone, I'm interested in learning how to create patches for the SL45(i) (FW56). I'd like to know what to use to write the code (I suppose it should be ASM - in this case, what CPU does the SL45 use?), and find some docs on the phone memory map (important addresses, locations, variables etc) and programming guides if possible. Thank you for your help. Andrei

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06-25-2004, 14:05	#2 (permalink)
adancau Freak Poster Join Date: Jun 2004 Location: Romania Age: 43 Posts: 156 Member: 67838 Status: Offline Thanks Meter: 0	Is there at least an website that has some information on SL45 programming? Tried Google, but I don't seem to find any.

06-25-2004, 14:58	#3 (permalink)
rc-flitzer No Life Poster Join Date: Mar 2004 Posts: 593 Member: 60520 Status: Offline Thanks Meter: 0	Here is some information (delete the "_"): http://mamaich._f_u_c_k_r_u_.net/sl45i Then you have to know how C166-Assembler works (C166 is the processor in mobile phone), you can google for that. Hope that helps. Otherwise, just ask!

06-25-2004, 20:05	#4 (permalink)
adancau Freak Poster Join Date: Jun 2004 Location: Romania Age: 43 Posts: 156 Member: 67838 Status: Offline Thanks Meter: 0	thanks, much appreciated. if I manage to do anything I'll post here Kind regards, Andrei

06-26-2004, 10:16	#5 (permalink)
adancau Freak Poster Join Date: Jun 2004 Location: Romania Age: 43 Posts: 156 Member: 67838 Status: Offline Thanks Meter: 0	Quick question - is there an emulator that can be used with a custom firmware file to which to apply patches? I don't want to try stuff directly on my phone.

06-26-2004, 17:16	#6 (permalink)
rc-flitzer No Life Poster Join Date: Mar 2004 Posts: 593 Member: 60520 Status: Offline Thanks Meter: 0	No, there's no real emulator. But you can test it without danger (99,9%) at your own mobile phone. Use the program AT+CGSN Debugger, latest version 1.5.7. You can download it from www.gsm-dev.com or www.gsm-dev.de (one of these links isn't working). It's good tool, and you can test your patches in RAM (e.g. beginning with 0x018200 is a free RAM area). Or you can search the RAM. Is a good tool. Then another good idea is to apply the patch "switch between atcgsn and mamaich patch" (or similar), so you can switch between the possibility of using atcgsn-debugger and the online patching mode from vklay (if you want to test/apply your patch in the flash instead of RAM).