CTRL-ALT-DEL No longer works properly

[jkmills78]

Firmware: PM_W_Jul16_FR Hardware: v1.11 Computer: Hyundai 386Super-STC 386 20MHz More details upon request.

When the computer boots from the PicoMem, CTRL-ALT-DEL causes the computer to issue 2 long beeps then 4 short beeps followed by the keyboard no longer responding. The computer doesn't appear to be locked up as the cursor still blinks. When booted from a floppy drive, with everything else the same as before (PicoMem installed, sd card in, etc) CTRL-ALT-DEL then works as normal. However I noticed that I could no longer access the PicoMem C: drive when booted from a floppy either. CTRL-ALT-DEL also will work when booting from the PicoMem, but only if pressed before the prompt is displayed (i.e. while autoexec.bat is loading drivers).

My BIOS is a Phoenix A386. According to some documentation I found, thise beep codes indicate a BIOS ROM checksum error. I have never heard beep codes after a machine passes POST and boots, but this is the only possible meaning I could find for the beeps issued.

[FreddyVRetro]

Hi,

If it fail to rom error, Maybe you enabled rom mirroring ? Can you try another BIOS base address ?

[jkmills78]

So far I have tested three addresses: C800, D000, and D800. No change in the behavior. I have confirmed that in my BIOS settings the shadow BIOS ROM is turned off (already set this way, so no change in settings). Are there any other settings that you would like for me to test?

[FreddyVRetro]

Did you test the Fast RAM firmware ? Is there BIOS settings where you can add Wait states to the ISA bus ?

[jkmills78]

The firmware I used is the latest Fast RAM firmware. In order to provide you with additional information about my environment (and also hopefully answering your question), I am including pictures of all of my current settings for both the PicoMem and my system's BIOS.