GitLab

Detail:
 * Stopped calling the broken abort fixup code when running under VMSAv6.
   Might be desirable to update it, possibly farmed out to a separate module -
   still need to think about this.
 * Unaligned load optimisations can now be disabled by the global NoUnaligned
   flag for testing purposes.
 * Extended OS_ReadUnsigned to permit reading of 64-bit unsigned integers.
   See Docs.ReadUnsigned for more details. Also sped it up by using MLA
   (or UMLAL) for most digits rather than repeated addition.
 * Bugfix is OS_GSRead: an uninitialised r0 was being passed to
   OS_ReadUnsigned, causing undesirable effects on rare occasions.
Admin:
  Tested on a rev B7 beagleboard.

Version 5.35, 4.79.2.98.2.8. Tagged as 'Kernel-5_35-4_79_2_98_2_8'

Detail:
  Having scanned the kernel source for unaligned load code fragments which
  would abort on ARMv6 and v7 and not having found any, I took the opportunity
  to give them build-time switches to use unaligned LDR((S)H)/STR(H)
  instructions if built for a new enough platform. Also added a couple of
  cases of LDRSB that will benefit v4 CPUs and a few instances of the v6
  SXTH instruction, but since objasm doesn't yet understand it (and when it
  does, not everyone will have upgraded) they are currently written as
  DCI statements.
  Most of the changes are to OS_Word handlers, which are notorious in that
  their input/output block is not word-aligned.
Admin:
  Not tested, but it should at least build.

Version 5.35, 4.79.2.98.2.6. Tagged as 'Kernel-5_35-4_79_2_98_2_6'

  [Not fully implemented - for now leaves at least 16MB free if only
  one RAM area; was 1MB].
* Added HAL_USBControllerInfo, HAL_MonitorLeadID and HAL_Video_Render.
* Added HAL->OS call OS_IICOpV.
* OS_MMUControl now allows independent control of I and C bits.
* Added facility to deactivate keyboard debounce (magic word "NoKd" in
  R2 in KeyV 0).
* Fixed problem with RAM amounts not a multiple of 4MB.
* Supremacy bit (in VDU 19) now sets all 8 bits of supremacy.
* Added PaletteV 14 (reads gamma tables).
* Added Supremacy transfer functions (like gamma correction, but for
  supremacy). Allows easy global supremacy effects in a mode-independent
  fashion. Controlled with PaletteV 15,16.
* Added modes 50-53 (320x240, 1,2,4,8bpp). Intended for small LCD.
* Added 13.5kHz versions of TV modes (selected by Hdr:Machine).
* Upped desktop version to 5.06.

Version 5.35, 4.79.2.66. Tagged as 'Kernel-5_35-4_79_2_66'

Detail:
  Lots of changes since last version, at least the following:
  * Updated OS timestamp, removed alpha status
  * Negative INKEY OS version changed to &AA
  * GraphicsV is now alocated vector number &2A
  * ROM moved up to &FC000000
  * Max application slot increased to 512 Mbytes (for now)
  * Max size of RMA increased to 256 Mbytes
  * RMA is now first-created dynamic area (so it gets lowest address after
    top of application slot)
  * OS_Memory 10 reimplemeted
  * New OS_ReadSysInfo 6 values 18-22 added
  * OS_ReadSysInfo 8 gains flag bit to indicate soft power-off
  * Misc internal top-bit-set-address fixes
  * *ChangeDynamicArea can take sizes in megabytes or gigabytes
  * Magic word "&off" in R0 passed to OS_Reset powers down if possible
  * Added acceleration: block copy; CLS; text window scroll up; rectangle
    fill
  * Disabled LED flashing in page mode (liable to crash)
  * Masked sprite plot and VDU 5 text avoids reading the screen if possible
  * Framestore made USR mode accessible
  * Fix for VDU 5,127 bug - now relies on font definitions being in extreme
    quarters of memory, rather than bottom half
  * Allocated 64-bit OS_Convert... SWIs
  * IIC errors use allocated error numbers
  * Looks for Dallas RTC before Philips RTC because we're using a Philips
    NVRAM device with the same ID
  * Fix to bug that meant the oscillator in the Dallas RTC wasn't enabled
  * Default mouse type (USB) changed to allocated number
  * Ram disc max size increased to 128 Mbytes (Ursula merge) and made
    cacheable for StrongARMs (not XScale)
  * Branch through zero handler now works in USR mode, by use of a
    trampoline in the system stack to allow PC-relative register storage
  * Address exception handler changed to not use 0 as workspace
  * OS_Memory 13 extended to allow specification of cacheability and access
    privileges
  * Added OS_Memory 16 to return important memory addresses
  * RISCOS_MapInIO() takes cacheable flag in bit 3, access permissions in
    bits 10 and 11, doubly-mapped flag in bit 20, and access permissions
    specified flag in bit 21
  * Bug fix in last version for application abort handlers didn't quite
    work; register shuffle required
  * "Module is not 32-bit compatible" error now reports the module name
  * Default configured language changed from 10 to 11 (now Desktop again)

Version 5.35, 4.79.2.51. Tagged as 'Kernel-5_35-4_79_2_51'

Version 5.35, 4.79.2.48. Tagged as 'Kernel-5_35-4_79_2_48'

further kernel/HAL split work in video area almost-HAL code for VIDC20/IOMD in vdu.vduhint, now almost divorced from kernel workspace tested briefly in Ursula desktop environment

Version 5.35, 4.79.2.4. Tagged as 'Kernel-5_35-4_79_2_4'

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

Version 5.35, 4.79.2.3. Tagged as 'Kernel-5_35-4_79_2_3'

Details:
  The Kernel will now compile to produce a pure 32-bit system if No26bitCode is
  set to TRUE.
  If No26bitCode is FALSE, then the Kernel will be a standard 26-bit Kernel,
  although some internal changes have taken place to minimise compile
  switches between the two cases. See Docs.32bit for more technical info.

  The hardest part was the flood-fill...

Other changes:
  Pointer shape changes now take place on the next VSync, rather than actually
  WAITING for the VSync. Turning the Hourglass on shouldn't slow your machine
  down by 5% now :)

  Lots of really crusty pre-IOMD code removed.

Admin:
  Tested in 32 and 26-bit forms in a limited desktop build. Basically, this
  will need to see a lot of use to iron out difficulties. I'd like anyone who
  has a non-frozen project to at least attempt using this Kernel.

Version 5.23. Tagged as 'Kernel-5_23'

Version 4.87. Tagged as 'Kernel-4_87'

Doesn't force CMOS setting of sync and monitortype on NCs/STBs.
Accepts HClockSelect parameter (number 9) in VIDC lists. Uses this to
determine whether to use HCLK or not, rather than abusing
Service_MonitorLeadTranslation.
If DontUseVCO flag is set, then VCLK will not be used - only RCLK (or HCLK if
requested).

Version 4.86. Tagged as 'Kernel-4_86'

Bandwidth limit for 7500FE fixed.
RO371Timings flag set to :LNOT:STB

Version 4.64. Tagged as 'Kernel-4_64'