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The pointer comparison checking required when running in a system with > 64M memory was tightened up from Wimp-4_75 to Wimp-4_76, but to allow the module to target pre RISC OS 5 systems an option to relax those checks is required.
Each check has been revisited and where appropriate demarked with a "AcceptLoosePointer" macro, which just remaps the pointer into the stricter form and carries on. In the strict checking case, the macro reduces to nothing.

Detail:
Add AcceptLoosePointers switch.
Retire singular use of StrongARM switch (calling XOS_SynchroniseCodeAreas is harmless pre StrongARM anyway).
Rename Ursula_RPC options to RO400.
Put duplicate documentation in the attic.
Allow -2 or -1 as the iconbar handle in Wimp_ResizeIcon (ticket #203).
Tighten up the list terminator check in the DebugMemory switch of Memory.s

Tested on RISC OS 3.10 (emulated), 3.50, 3.60, 3.70, 4.02.

Version 5.24. Tagged as 'Wimp-5_24'

Wimp03.s: check that pollword was in application space was corrupting R3 leading to an address exception (!) on pre Medusa targets
Wimp08.s: compare had erroneously been change to equality check, leading to screwy memory allocation and much instability on 3.50 and 3.60 especially when applications quit

Version 5.23. Not tagged

Minor fixups as part of univeral !Boot work.
Options no longer ASSERT on International_Help (which is a definition exported by the kernel, rather than a build switch), and instead define a switch which is true for > 3.50.
Non UTF8 supporting case has simple substitutes for Wimp_TextOp.
Legacy_DomainId and LegacyIRQsema no longer cause NULL pointer dereference.
MOVeQ => MOVEQ to placate ObjAsm.

Ursula_RPC version built and used briefly on RISC OS 4.02 host. No other run time testing.

Version 5.22. Tagged as 'Wimp-5_22'

Detail:
  s/Wimp, s/Wimp01, s/Wimp02, s/Wimp07, s/Wimp08 - Try using OS_ReadSysInfo 6 to get IRQsema & DomainId locations before falling back on legacy values. Store the pointers in module workspace for speedy access.
Admin:
  Tested on rev A2 BB-xM


Version 5.13. Tagged as 'Wimp-5_13'

Moved the Hdr:NdrDebug routines so that debug versions build.

No change to production binaries, so not tagged.

Variants pre-Ursula now build again.

Version 4.91. Tagged as 'Wimp-4_91'

Detail:
  * Default UpCall handler is installed when an application is paged out,
    so there is no danger of it being called by naughty people issuing
    UpCalls in the background.
  * AMBControl builds now sit on Service_MemoryMoved so that they can issue
    Message_SlotSize when the kernel has resized the application slot
    independently (eg because the memory was needed to grow a dynamic area,
    and nobody objected via Service_Memory or UpCall_MovingMemory).
  * Medusa-onwards builds no longer request Service_ValidateAddress, because
    we're not managing the free pool any more, and the code that was here
    only called an ineffectual SWI!
  * SafeChangeDynamic wasn't setting the CAO high enough to be free of big
    application slots; now it points it at itself.
  * The free pool wasn't being shrunk/grown enough on initfirsttask /
    closelast. It still can't do by more than 1GB without stiffing - bug in
    kernel?
  * Bugs in top-bit-safe changes fixed: dragbox resizing was broken, Escape
    state wasn't being restored for new tasks.
Admin:
  Tested on high-ROM/stack, 48M-appslot Tungsten.

Version 4.77. Tagged as 'Wimp-4_77'

Detail:
  All pointers passed to the Wimp (mode selectors, menus, sprite areas,
  palettes, pollwords, validation strings, message lists, routines etc etc)
  in any of its APIs can now be anywhere within the 32-bit address range.
  In general, whenever "<= 0" was accepted as a null condition, the value
  must now be either 0 or -1. It should also be tolerant of system memory
  areas (supervisor stack and RMA) being in the top half of memory.
  Also:
  * Default next slot now a build option - Ursula builds (eg Tungsten) use
    1024K instead of 640K
  * Ursula builds no longer have a build variant in the help string
  * Autosenses ROM location
  * CR-LFs in *Configure messages replaced with LF-CRs
  * Added Iyonix resources (currently based on Morris4)
  * Morris4 sprites files have gained file_lxa, small_lxa, file_unf,
    small_unf and lo!help sprites
  * Ursula sprites files have gained lo!help sprites
  * *WimpSlot can take memory sizes in megabytes or gigabytes
Admin:
  Tested on a "traditional" memory-mapped Tungsten.

Version 4.76. Tagged as 'Wimp-4_76'

  Updated to build using objasm instead of aasm.
  Sources changed to be objasm-compatible.
Admin:
  Requires Library 0.71 or later.
  Requires BuildSys 3.06 or later.
  Requires Env 0.65 or later.

Version 4.64. Tagged as 'Wimp-4_64'

Detail:
  * Added new functionality for menu trees: submenus can now be opened by
    clicking on their parent menu item. This is particularly aimed at
    touchscreen devices, and is configurable via the new *Configure keyword
    WimpClickSubmenu.
  * Change to the menu inactivity timeout behaviour after auto-opening of
    submenus (either by hovering over the parent menu item or by the new
    click-to-open functionality): although all hover operations are still
    ignored for this period, any click operations *will* now be obeyed.
  * Corrected numerous misleading comments in the menu handling code.
  * Added some suspiciously absent ALIGNs in the *Configure keyword handlers.
  * Uses new ASCII case-forcing macros so there are now fewer warnings
    printed during assembly (and it should run faster now too).
  * Added an AREA directive so that objasm's -ABS switch is no longer needed.
  * Standardised ErrMem token across all Messages files that use English.
Admin:
  Tested on a desktop machine.
  Requires HdrSrc 1.06.

Version 4.57. Tagged as 'Wimp-4_57'

Detail:
  Lots of little changes throughout a lot of source.
Admin:
  Appears to work - not stress tested with things like lots of tasks, big
  transfers, and all the other things that tend to go wrong.

Version 4.47. Tagged as 'Wimp-4_47'

Adapted assembly process so that the choice of Options file (previously based purely on the "System" variable) can be overridden by passing "OPTIONS=foo" as an argument to either MkRom, or to amu/amu_machine directly, or indirectly, by specifying it in the components file for a build. To accomplish this, it was necessary to switch from using aasm to objasm - hence the large number of source files affected in this commit.

Version 4.09. Tagged as 'Wimp-4_09'