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IIC code is now re-entrant. Also a bugfix.
Ben Avison authored 
Detail:
  I pinched the IIC code from here to build MPEGDriver-0_32-1_33_2_2; now
  that I've added re-entrancy there (MPEGDriver-0_32-1_33_2_4), I'm folding
  the changes back in here, in case it's ever of use to someone else.
  Re-entrancy is achieved by restricting register use to r0-r3,r10,r11,CPSR
  so that re-entered code can complete any pending IIC operation by
  pulling those registers from the IRQ stack, before executing the new
  operation.
  The bugfix is regarding a continued read transaction - previously, the
  final byte read of a read transaction was never acknowledged; it needs to
  be acknowledged if it is immediately followed by another read transaction
  without its own repeated Start condition.
Admin:
  Tested as part of MPEGDriver, but not as part of a kernel build.

Version 5.35, 4.79.2.47. Tagged as 'Kernel-5_35-4_79_2_47'
4ecea6cc
Name Last commit Last update
Dev/IICTest Spinner branch merged.
Doc Kernel merged
Docs Merge in long command line support from Ursula kernel.
NewModes Import from cleaned 360 CD
Resources/UK More stuff. Up to the desktop now; cache on, working keyboard. Some source restructuring to start to make splitting it up into several object files more feasible.
TestSrc * Converted to building with ObjAsm (but still a single object file using ORG).
hdr StrongARM is back, and this time it's provisional!
o Clean reimport of hdr.RISCOS (real commit date 2008-03-28 by bavison), without any of the 3rd party allocations.
rm Clean reimport of hdr.RISCOS (real commit date 2008-03-28 by bavison), without any of the 3rd party allocations.
s IIC code is now re-entrant. Also a bugfix.
.gitattributes Import from cleaned 360 CD
BlackLog Initial revision
Changes Import from cleaned 360 CD
HelpStrs 32-bit Kernel.
LICENSE Clean reimport of hdr.RISCOS (real commit date 2008-03-28 by bavison), without any of the 3rd party allocations.
Makefile More stuff. Up to the desktop now; cache on, working keyboard. Some source restructuring to start to make splitting it up into several object files more feasible.
MkClean,fd7 Import from cleaned 360 CD
MkExport,fd7 Import from cleaned 360 CD
MkRom,fd7 partial video changes for kernel/HAL split near-HAL code for VIDC/IOMD in vdu.vduhint briefly tested in Ursula desktop build still some kernel workspace dependency in near-HAL code
MkRomInst,fd7 32-bit Kernel.
Version Check-in of the few last-minute changes for the Customer L demo. Nothing exciting, apart from an extended touchscreen API.
VersionASM IIC code is now re-entrant. Also a bugfix.
VersionNum IIC code is now re-entrant. Also a bugfix.