Changeset 592 in xtideuniversalbios for trunk/Assembly_Library/Src/File/DosCritical.asm


Ignore:
Timestamp:
Jun 25, 2018, 10:29:27 PM (7 years ago)
Author:
Krister Nordvall
Message:

Changes:

  • The problem with NASM in the previous revision (r591) has been fixed.
  • The colors used by the boot menu and hotkey bar can now be customized by selecting one of a number of pre-defined color themes. Suggestions for additional themes are more than welcome!
  • Large builds are now 10 KB. Small builds are still 8 KB with the exception of the Tiny build which is now 4 KB. In other words, builds are now as small as possible to make it easier to combine them with other BIOSes.
  • Added code to the library to improve drive error handling. XTIDECFG can now handle "Drive Not Ready" errors.
  • Fixed a couple of potential bugs in AtaID.asm (AtaID_GetMaxPioModeToAXandMinCycleTimeToCX); 1) ATA1.bPioMode was treated as a WORD variable. 2) ATA2.bPIOSupp was assumed to be non-zero which would result in PIO mode 3 being returned if the assumption was wrong.
  • Made the same changes in the equivalent function used by BIOSDRVS (DisplayPioModeInformationUsingAtaInfoFromDSBX in AtaInfo.asm).
  • Fixed a bug from r587 in PDC20x30.asm in PDC20x30_GetMaxPioModeToALandMinPioCycleTimeToBX.
  • Fixed a bug from r523 in XTIDECFG where Auto Configure would only set the IRQ on one IDE interface on AT-builds.
  • XTIDECFG will now restore the default settings for the "Serial port virtual device" when reselecting it in the list of device types. This makes it behave consistently for all device types.
  • The eAAM macro is now used regardless if USE_UNDOC_INTEL is defined or not because it is apparently supported on all processors including the NEC V20/V30 CPUs.
  • Renamed the EXCLUDE_FROM_XTIDE_UNIVERSAL_BIOS define to EXCLUDE_FROM_XUB.
  • Added a define to exclude unused library code from BIOSDRVS (EXCLUDE_FROM_BIOSDRVS). This makes it a lot smaller than in previous revisions.
  • All unnecessary CLD-instructions are now under a new define 'CLD_NEEDED' which is only enabled for the BIOS. It is disabled for XTIDECFG and BIOSDRVS but can be enabled if needed by adding this define to the respective makefile. This change was made because these unnecessary instructions are wasteful and should never be needed. In fact, they only serve to hide bugs (in other peoples code) which I strongly believe should be avoided. I recommend people making their own BIOSes from source to not use this define as it's extremely unlikely to be needed.
  • Updated the copyright info in SerDrive and changed an URL to point to the new site.
  • Updated the copyright info and version number in BIOSDRVS.
  • Updated the copyright info in XTIDECFG.
  • Optimizations in general.
File:
1 edited

Legend:

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  • trunk/Assembly_Library/Src/File/DosCritical.asm

    r526 r592  
    1 ; File name     :   DosCritical.asm
    21; Project name  :   Assembly Library
    3 ; Created date  :   1.9.2010
    4 ; Last update   :   2.9.2010
    5 ; Author        :   Tomi Tilli
    62; Description   :   DOS Critical Error Handler (24h) replacements.
    73
    … …  
    2218;
    2319
     20; Note! Only DOS functions 01h - 0Ch, 30h and 59h can be called from a Critical Error Handler.
    2421
    2522; DOS Critical Error Handler return values
    … …  
    2825    .retryOperation                             resb    1
    2926    .terminateProgramAsThoughInt21hAH4ChCalled  resb    1
    30     .failSystemCallInProgress                   resb    1
     27    .failSystemCallInProgress                   resb    1   ; Needs DOS 3.1+
    3128endstruc
    3229
    … …  
    8380
    8481;--------------------------------------------------------------------
     82; DosCritical_CustomHandler
     83;   Parameters:
     84;       Nothing
     85;   Returns:
     86;       Nothing
     87;   Corrupts registers:
     88;       Nothing
     89;--------------------------------------------------------------------
     90ALIGN JUMP_ALIGN
     91DosCritical_CustomHandler:
     92    add     sp, 6   ; Remove the INT 24h return address and flags from stack
     93
     94    mov     ah, GET_EXTENDED_ERROR_INFORMATION  ; Requires DOS 3.0+
     95    xor     bx, bx
     96    int     DOS_INTERRUPT_21h
     97    mov     [cs:bLastCriticalError], al
     98
     99    pop     ax
     100    pop     bx
     101    pop     cx
     102    pop     dx
     103    pop     si
     104    pop     di
     105    pop     bp
     106    pop     ds
     107    pop     es
     108    iret            ; Return from the INT 21h call
     109
     110bLastCriticalError:     db  0
     111
     112
     113;--------------------------------------------------------------------
    85114; DosCritical_HandlerToIgnoreAllErrors
    86115;   Parameters:
    … …  
    95124    mov     al, CRITICAL_ERROR_ACTION.ignoreErrorAndContinueProcessingRequest
    96125    iret
     126
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