1. 31 Jul, 2011 1 commit
    • Jeffrey Lee's avatar
      Update the method the Cortex kernel uses to determine the UtilityModule & ROM dates · daa8607f
      Jeffrey Lee authored
        Three main changes:
        * On odd-numbered (i.e. development) versions of the module, the UtilityModule will now take its date from the VersionNum file instead of using a hard-coded date.
        * All build versions now look for the new "extended ROM footer" (as created by romlinker 0.04+) at the end of the ROM image and use it to determine the ROM build date for return by OS_ReadSysInfo 9,2. Failing to find the build date in the footer will cause OS_ReadSysInfo 9,2 to return 0.
        * On odd-numbered versions, OS_Byte 0 will now use the ROM build date (as found in the extended footer) to generate the error block that's returned to the user. This seems OK as the PRM describes OS_Byte 0 as returning the "creation date of the operation system". Plus it's a convenient way of getting the ROM build date into the Switcher, since the switcher uses OS_Byte 0. If the extended footer can't be found (or if the string hasn't been initialised yet, e.g. before Service_PostInit) the code falls back to a hard-coded string containing the date from the VersionNum file.
        File changes:
        Makefile - Updated to not create the obsolete Time+Date file (previously used for the ROM build date)
        Version - Use date from VersionNum file for development builds
        hdr/Options - New UseNewFX0Error variable/option to make it easy to check which OS_Byte 0 variant should be enabled
        hdr/KernelWS - Added new string buffers & extended ROM footer pointer to workspace
        s/Middle - Updated OS_ReadSysInfo 9 code, and added utility functions for searching the extended ROM footer for certain tags
        s/NewReset - Added a couple of calls to initialise the new string buffers just prior to Service_PostInit. This is required since OS_Byte/OS_ReadSysInfo shouldn't enable interrupts, but date conversion relies on the Territory module, which may enable interrupts.
        s/PMF/osbyte - Updated OS_Byte 0 code
        Tested in OMAP ROM, with and without the extended footer present.
      Version 5.35, Tagged as 'Kernel-5_35-4_79_2_98_2_41'
  2. 21 Jun, 2004 1 commit
    • Ben Avison's avatar
      Bugfixes to OS_Bytes 13 and 14. · 799120d5
      Ben Avison authored
        Event numbers greater than 31 are possible, it's just that OS_GenerateEvent
        doesn't bother cheking the event semaphores for them. However, the value
        returned in R1 from these OS_Bytes always indicated that such events were
        disabled. This suggests that OS_GenerateEvent was not always so, but the
        initials in comments there suggest the change was about RISC OS 3.0.
        The OS_Bytes now correctly reflect OS_GenerateEvent behaviour.
        Another bug fix is that once the event semaphores had saturated at 255,
        OS_Byte 13 was still happy to decrement the semaphore, so for example 256
        enables followed by 255 disables would have disabled the event.
        Not tested.
      Version 5.35, Tagged as 'Kernel-5_35-4_79_2_70'
  3. 10 Nov, 2000 1 commit
  4. 05 Oct, 2000 1 commit
    • Dan Ellis's avatar
      Added HAL NVRAM support · a89c776b
      Dan Ellis authored
        Added the HAL NVRAM entries.
        Modified i2cutils to use the HAL entries for NVRAM and behave sensibly if the HAL reports that there is no NVRAM, in which case there must be a forced reset_cmos call so that the cache gets set up sensibly.
        Tested under the RPC emulator and appears to be working correctly, although some calls to IIC are still being made in the no nvram case.
      Version 5.35, Tagged as 'Kernel-5_35-4_79_2_8'
  5. 03 Oct, 2000 1 commit
  6. 15 Sep, 2000 1 commit
    • Kevin Bracey's avatar
      * Converted to building with ObjAsm (but still a single object file using ORG). · 49836a59
      Kevin Bracey authored
      * Added ARM_IMB and ARM_IMBRange SWIs as recommended by ARMv5.
      * Some early prototype HAL bits popped in - a lot of source restructuring still
        to come.
      * New debug target creates an AIF image with debug information, and translates
        this into an ASCII object file for the 16702B logic analyser.
      Version 5.35, Tagged as 'Kernel-5_35-4_79_2_1'
  7. 18 Aug, 2000 1 commit
    • Stewart Brodie's avatar
      Improved the error cacheing. · 3976268c
      Stewart Brodie authored
        Removed DriversInKernel conditional.
        If the territory changes or the resource file changes, the kernel
          will now decache all the cached error blocks so that next time
          they are required, they will be looked up again.
        The error cacheing is now a kernel build option and is always set
          to on.
        Removed one of the 5 error messages to be cached - it never seems
          to happen.  The remaining 4 are more frequent.
        Tested in Ursula build.
        Cannot be used with HdrSrc 0.94.  HdrSrc 0.95 and later is required
          (or HdrSrc 0.93 and earlier subject to other kernel requirements)
        Requires MessageTrans 0.42 or later for correct operation when a
          replacement messages file is loaded.
      Version 5.32. Tagged as 'Kernel-5_32'
  8. 13 Apr, 2000 1 commit
    • Kevin Bracey's avatar
      * Run-time emulator detection added (no need for separate images). Needs an · 36ba4cb5
      Kevin Bracey authored
        RPCEm update.
      * Register allocation in default ErrorV handler fixed - problems occured when
        callbacks were triggered on way out.
      * OS_Byte 19 didn't manipulate interrupt disable flag correctly in 26-bit
      * Stray bit of debugging left in sprite code many years ago removed.
      Version 5.23. Not tagged
  9. 04 Apr, 2000 1 commit
    • Kevin Bracey's avatar
      32-bit Kernel. · b4016e9c
      Kevin Bracey authored
        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.
        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'
  10. 02 Nov, 1999 1 commit
    • Kevin Bracey's avatar
      OS_ReadSysInfo 2 now reports whether the IIC bus is fast (in bit 24 of R2),... · c9f6a232
      Kevin Bracey authored
      OS_ReadSysInfo 2 now reports whether the IIC bus is fast (in bit 24 of R2), and whether I/O clocks should be stopped when idling the processor (bit 25).
      OS_Byte 19 is a bit more careful in its use of Portable_Idle - an edge case
      where the vsync interrupt was already pending now returns immediately.
      Version 5.07. Tagged as 'Kernel-5_07'
  11. 14 Oct, 1999 1 commit
  12. 13 Oct, 1999 1 commit
  13. 25 Feb, 1999 1 commit
  14. 16 Dec, 1998 1 commit
  15. 30 Oct, 1998 1 commit
    • Kevin Bracey's avatar
      OS_Byte 129 0 255 now reports &A7 for STB build (because it _is_ a · 2392dd15
      Kevin Bracey authored
      RISC OS 3.7 generation kernel).
      CMOS no longer gets scrambled when reset in STB build.
      UpCall_KeyboardStatus now issued when OS_Byte 202 called or when keyboard
      status byte is changed by other means (such as pressing Caps Lock).
      Version 4.67. Tagged as 'Kernel-4_67'
  16. 30 Sep, 1998 1 commit
    • Kevin Bracey's avatar
      Spinner branch merged. · 5ba3f5db
      Kevin Bracey authored
      Bandwidth limit for 7500FE fixed.
      RO371Timings flag set to :LNOT:STB
      Version 4.64. Tagged as 'Kernel-4_64'
  17. 21 Jan, 1997 1 commit
  18. 21 Nov, 1996 1 commit
  19. 06 Nov, 1996 1 commit
  20. 05 Nov, 1996 1 commit