First many thanks to the creator of this soft - was fun to use =]
Back up duo BRAM - instructions on
http://www.chrismcovell.com/PCEmon/ are excellent, below is just a step by step of how I have followed some of them;
No resposibility taken for damage to your equipment etc!
1. I have this running on win7 64bit, f*ck apple.
2. Get a RS232-USB adapter (As per instructions you could also use a TTL cable but I don't have one), I have used this one (beware china fakes);
http://www.ftdichip.com/Support/Documents/DataSheets/Cables/DS_US232R-10_R-100-500.pdf3. Install the RS232-USB adapter and confirm which COM port it is assigned to in device manager, I like port 4, it is possible to lock the address in advanced settings.
4. Burn the PCEmon CD from the image provided at the homepage 'RS232_19200.cue' run in it your duo
5. Build the RS232-PCE cable to the schematic shown when you run the pcemon cd with a normal pad connected
6. Install a terminal program, I chose;
https://osdn.net/projects/ttssh2/releases/7. Run the terminal program 'ttermpro.exe', I used these settings;
Setup>Terminal - Transmit CR+LF, local echo unticked
Setup>Serial Port - correct COM port selected, 19200 baud, 8bit, none, 1bit, none
save the setup from this setup section at the bottom
8. run the pcemon cd, swap over the pad to rs232 cable
9. type n to see if the palette colours change, if they don't something is wrong
10. to create a bram backup I typed this exactly from booting;
IN TERATERM File>Log - only have 'binary' option ticked then save, change the save file location to somewhere else if you like
o re
<
s
close tera term, restart duo
11. inspect the .log file created and if required trim any command written before the dump like shown here, no need to rename the .log file;
12. feeling brave? format the back up ram on your pce and check saves are gone
13. load up pcemon and type this to restore the bram
o re
l 800
IN TERATERM File>Send File ENSURE 'binary' option is ticked and cick open, this will send the file over to the pce buffer
c TO CHECK BUFFER IS FILLED
>
close tera term, restart duo
14. check the save files on the pce, hopefully restored OK