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Tweak OS_ReadModeVariable optimisations
Jeffrey Lee authored 
Detail:
  s/vdu/vduswis - Don't use RMVForCurrentMode when R0 = ModeNo, only use it if R0 is -1. This ensures that results for explicitly-specified modes will always represent the base properties of the mode and won't be influenced by any unusual properties of the current mode, e.g. LineLength/ScreenSize alterations caused by driver-specific framebuffer padding.
Admin:
  Tested on Raspberry Pi 3


Version 5.83. Tagged as 'Kernel-5_83'
af1f546b
Name Last commit Last update
Dev Delete lots of old switches
Doc Kernel merged
Docs Make MMU_Changing ARMops perform the sub-operations in a sensible order
Resources/UK Add support for shareable pages and additional access privileges
TestSrc Delete pre-HAL and 26bit code
h Header defs for Pi Compute module and IIC
hdr Initial support for the ExtraBytes VIDC control list item
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 Tweak OS_ReadModeVariable optimisations
.gitattributes Added 'UnConv' error (see also HdrSrc).
BlackLog Initial revision
Changes Import from cleaned 360 CD
HelpStrs Adoption of *CONFIGURE/STATUS CACHE commands
LICENSE Clean reimport of hdr.RISCOS (real commit date 2008-03-28 by bavison), without any of the 3rd party allocations.
Makefile Add support for shareable pages and additional access privileges
MkClean,fd7 Mostly device stuff.
MkExport,fd7 Import from cleaned 360 CD
MkInstall,fd7 Added a disc install phase as an analogue of the export phase
MkRom,fd7 Makefile recreated from fragments
Version Delete STB code
VersionASM Tweak OS_ReadModeVariable optimisations
VersionNum Tweak OS_ReadModeVariable optimisations