5.24 HardDisc4 (self-extracting) not Risc PC compatible

Testing the recent 5.24 release on the Risc PC.

The self-extracting harddisc archive fails to run with the following errors

On 4.02, “No room to run transient” (even with an enormous Next slot)
On 5.24, “Internal error: abort on instruction fetch at &20Bf67C4”

Has some ARMv5+ code crept in again?

I don’t have a real Risc PC, but it’s working under RPCEmu (with the 5.24 ROM). Do you have any modules unplugged?

Another option is to try *Configure NoBoot to ensure that nothing else on your system is conflicting with it, although this may complicate things as you’re presumably softloading the 5.24 ROM. I don’t have any experience with that; is it possible to run the softload in a NoBoot environment?

Thanks for the input, I tried again on 5.24 and it worked, maybe I had a corrupted download last time?

As for 4.02, is it meant to work on 26 bit OSes?

Transient utilities are loaded into the RMA. I think the OS has always tried to resize the RMA appropriately (after all, it’ll just try using OS_Module to allocate a block), so resizing the RMA/wimpslot manually shouldn’t be necessary. But at 16.3MB it’ll be overflowing the 11MB RMA size limit that exists on RISC OS 3.5-era machines. So unless we trim some fat or switch to a better compression algorithm, you’re best sticking to running it under RISC OS 5, or using the zip version.