Boot menu

Using BootUI 003 the keyboard now works on the Titanium. The only little thing I found was that when trying for an alternative filing system to boot from, SCSI, the drive number could not be selected. A bootable backup is on SCSI::2 here.

Slighty later. At the command line configuring SCSIFSDrive to 2 sorted it.

  RSB R1,PC,PC
  MSR R1,CPSR
  TEQ R1,#0
  STRNE R1,[R1,#0]
  MOV R0,#0

That’s some facepalm code right there! What is it even supposed to be doing? Checking all flags are clear? Should it not be checking C only?

It looks like some 32bit safe code with a bit of 26bit code in the form of the initial RSB – which would end up with the PSR and CPU mode in R1, attempting to mirror the MSR that follows I guess.

Clearly it’s also using the wrong register to do it.

It looks like it’s code which is trying be 26/32 bit neutral and compatible with ARM2/3 which doesn’t have MSR/MRS.

I always said such pieces of code where indecipherable and error prone, and not worth including for the one person still using an Acorn A4.

PS. It might be worth dropping JF (Gerph) a line as Select had a BootUI. Nothing ventured, … He has offered to donate his zero network boot code ;)

That’s is good news! I was putting off network boot till later, and I don’t even have a ShareFS setup.

Observation for ROOL:
The boot message, Keyboard not present, only occurs when I have my USB hub plugged in; it doesn’t matter if the keyboard is plugged into a separate USB port or into the hub. Having the hub plugged in at start-up prevents the keyboard from working; message displayed. At the desktop everything works as expected. Addendum: Its a known issue

I will have to consider this as well. If a user gets Keyboard not present they won’t be able to select any options either if their boot fails.

My bad, zero network configuration code.

I always said such pieces of code where indecipherable and error prone, and not worth including for the one person still using an Acorn A4.

I think you’d be surprised how many people are still using A4’s, in the last year we’ve either repaired or supplied spares for about a dozen A4’s

The latest version is available here.

It keeps the same option in 1. even after a failed boot of an alternative FS. You can also choose which drive to use for FileCore FSes.