@ddni (and all who like to try)
If you find mistakes, please shout
1) From a running system (RadeonHD based)
1.1) Adapt your monitor file (thanks to @Spectre660)
CMPLENGTH=6
BOARDNAME=Radeon
VSYNCMIN=60
VSYNCMAX=60
HSYNCMIN=30000
HSYNCMAX=80000
MODE=640x480@60
MODE=800x600@60
MODE=1024x768@60
MODE=1280x1024@60
MODE=1920x1080@60
MODE=2560x1440@60
MODE=3840x2160@60
DISABLEFAKENATIVE=Yes
INTERRUPT=No
2) Reboot and enter CFE
2.1) from the prompt
setenv -p STARTUP 'speed ; setenv os4_bootdevice "auto" ; boot -fs=amigafs ide0.0:amigaboot.of'
(Make sure that ide0.0 is your Workbench
boot partition or change it accordingly)
3) Turn off (plug off) the machine
4) Open the case
4.1) Set jumper GPIOLV10 (between the back ports and RAM sockets "2" and "3")
4.2) Switch the graphics board to the RX
5) Turn on the machine
NB: If you have a (working) PuTTY setup on a PC/Linux machine you can fix mistakes (as long as CFE stops during boot because of an error, otherwise you can only watch)
NB2: There is a way to fix little mistakes with PuTTY, you only need to disconnect your boot partition/hdd and CFE will error during init and throw you to a command prompt.
Steps to return to Radeon HD (works ONLY with a PuTTY connection or by clearing CMOS, the jumper next to GPIOLV10):
1) Turn off the machine
1.1) Remove the GPIOLV10 jumper
1.2) Switch the graphics board to the HD
1.3) Remove your boot hdd/ssd (unplug the power cord) - only do this if you got a working PuTTY serial connection to a Win/Linux system (see also NB2 above)
2) Turn on your machine
2.1) Have your PuTTY serial connection ready
2.2) When CFE errors out on finding the boot device, you can redo your STARTUP variable from the PuTTY connection (or redo the whole lot if you cleared CMOS before)
3) Turn off the machine again
3.1) Replug the power to your boot device/hdd
4) Reboot a last time and you should be back to RadeonHD
edit:
- added some more info
- rephrased some steps
- added INTERRUPT=No to the monitor file, since it seems to cure the random freezes
Edited by Raziel on 2022/8/14 23:18:28
Edited by Raziel on 2022/8/27 18:39:55