Demo named Speedway Manager do not run under ApolloOS

[Kamelitoloveless]

Demo do not run because it wait for a value set in memory by AddIntServer() to sync with VBL.

1. launch the Speedway manager under Aros68k or ApolloOS equipped Amiga. https://www.pouet.net/prod.php?which=59067

The demo is Frozen.

The demo should run like on AmigaOS.

Architecture

• Amiga Vampire V4SA

CPU

• m68k

Version
ApolloOS 9.5.1
Additional context

Demo wait for a value set in memory by AddIntServer() to sync with VBL. This value is not set so the demo looks freezed.
Prior to call AddIntServer the demo do a disable() and Forbid().
If I remove the disable() / enable() call the demo run.
It happens on other demos.
It looks like an issue with IDNestCnt but I might be wrong.

[Kamelitoloveless]

I wonder if there is no collision with timer.device Vlank interrupt under Aros that lead to this freeze. When I killed this interrupt using Scout and launch the demo it run but froze on exit. See AROS_INTH1() in low_level.c
Or it's AddIntServer that do not like behind called when a call to disable has been done before.
ApolloOS and Aros code is the same.

[Kamelitoloveless]

@michalsc I replaced the bge.s instruction in enable.s by a bgt.s and it fixed the demos.
I do not see any regression but I can't be 100% sure of this fix (workaround?)
Any idea ?