Re: [Freedos-devel] trying to understand execrh.asm -- calls to EXECRH cause my 286 system to lock up

Thank you, ecm! The information you provided has been very helpful. I have been able to insert debug output in the driver to better troubleshoot. Related, I am now reading "Advanced MSDOS Programming" from Microsoft Press, and I'm finding it quite helpful. Little by little, I'm making progress.

Re: [Freedos-devel] trying to understand execrh.asm -- calls to EXECRH cause my 286 system to lock up

On at 2023-05-09 21:02 -0500, rehsd.i...@gmail.com wrote: Thanks again, Eric, for the previous info. I've done a bit more digging but haven't found the root cause of the issue yet. I have tried forcing LBA (using sys & sys config). I have also added a bit more debugging info on boot. I added

Re: [Freedos-devel] trying to understand execrh.asm -- calls to EXECRH cause my 286 system to lock up

Thanks again, Eric, for the previous info. I've done a bit more digging but haven't found the root cause of the issue yet. I have tried forcing LBA (using sys & sys config). I have also added a bit more debugging info on boot. I added more details to the following webpage, including a video

Re: [Freedos-devel] trying to understand execrh.asm -- calls to EXECRH cause my 286 system to lock up

Hi Rich, -My BIOS supports both CHS and LBA. FreeDOS is using CHS due to the size of the CF card (~500MB). I will try forcing LBA. Actually that should depend on partition type, not on disk size ;-) -I log interrupt calls out to my serial debugger on my 286. In execrh(), I am not seeing

Re: [Freedos-devel] trying to understand execrh.asm -- calls to EXECRH cause my 286 system to lock up

Thank you, Eric! -I will do some testing of reading the CF card outside of the FreeDOS kernel, as you suggest. -My BIOS supports both CHS and LBA. FreeDOS is using CHS due to the size of the CF card (~500MB). I will try forcing LBA. -I log interrupt calls out to my serial debugger on my 286. In

[Freedos-devel] trying to understand execrh.asm -- calls to EXECRH cause my 286 system to lock up

Hello, everyone. I am trying to better understand the EXECRH function in execrh.asm . Could someone help me understand the call being made in EXECRH of "call far[.dhp]"? To where is it calling,