Changeset 589 in xtideuniversalbios for trunk/Assembly_Library/Inc/CgaSnow.inc


Ignore:
Timestamp:
May 22, 2016, 12:26:57 PM (9 years ago)
Author:
Krister Nordvall
Message:

Changes:

  • BIOS: Fixed a purely cosmetic bug from r542 where, in builds containing MODULE_EBIOS, the boot menu would display an incorrect drive size (0.4 kB with MODULE_STRINGS_COMPRESSED or 0.5 kB without) for old drives with no support for LBA.
  • Fixed a bug from r392 where Vision_DetectAndReturnIDinAXandPortInDXifControllerPresent would return the ID in AL instead of AH (if DANGEROUS_DETECTION had been defined).
  • Fixed a bug from r587 in AdvAtaInit.asm that would prevent detection of QDI Vision controllers.
  • Also changed how the QDI Vision IDs are defined (removed the need for shifting) to avoid confusion. This fixed a potential bug from r587 in AdvAtaInit.asm where some IDs were not being shifted.
  • Fixed a bug in PDC20x30.asm from r587 where GetPdcIDtoAX would not return with the IDE base port in DX so DisablePdcProgrammingMode would fail.
  • Made some changes to ModuleDependency.inc and other files so that MODULE_ADVANCED_ATA now requires USE_386. Consequently it is no longer included in the regular AT-builds, only in the 386_8k-build.
  • Moved the UNROLL_SECTORS_IN_CX_TO_xWORDS macros from IDE_8bit.inc to IdeIO.inc which means it's now possible to build a BIOS without MODULE_8BIT_IDE.
  • XTIDECFG: Added a minimum DOS version check (since it needs DOS version 2+) to allow the program to quit gracefully in the unlikely scenario where someone tries to run it under DOS version 1.
  • Made some changes to Drive.asm to improve drive enumeration. The old method using GET_DOS_DRIVE_PARAMETER_BLOCK_FOR_SPECIFIC_DRIVE worked well in Windows XP but not in Windows 98 SE (in Windows or in DOS mode). The two problems were; 1) The function call would access the drives which on single floppy drive systems would cause Windows to swap between A: and B: (throwing a blue screen asking the user to insert a disk etc). 2) Only floppy drives and FAT16 drives would be available in the list of drives, no FAT32/optical/network drives.
  • Improved code in IdeControllerMenu.asm so that the default port addresses for all IDE interfaces are now restored when (re-)selecting the (same) type of IDE device.
  • Also made it impossible to select a device type unless the required module is included in the loaded BIOS.
  • The version check done when loading a BIOS now uses the FLASH_SIGNATURE definition from Version.inc. Any changes affecting RomVars now only requires updating that definition. This means that changes to RomVars must be implemented in both the BIOS and XTIDECFG before being committed to the repository.
  • Added a compatibility fix for 3Com 3C503 cards to the ROM checksumming code in Buffers.asm (Buffers_GenerateChecksum).
  • SerDrive: Made some minor changes to file names and paths to improve compatibility with case sensitive environments.
  • BIOSDRVS: Made a minor size optimization which as a side effect also makes it compatible with all DOS versions including DOS version 1.
  • Library: Renamed the WAIT_RETRACE_IF_NECESSARY_THEN macro to CALL_WAIT_FOR_RETRACE_IF_NECESSARY_THEN and made a tail-call-optimized version of it (JMP_WAIT_FOR_RETRACE_IF_NECESSARY_THEN).
  • A speed optimization to the eRCL_IM macro for 386 and higher. This change breaks emulation in the sense that the macro will fail when given a memory operand as the first parameter.
  • Other minor optimizations and fixes.
File:
1 edited

Legend:

Unmodified
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Removed

  • trunk/Assembly_Library/Inc/CgaSnow.inc

    r52 r589  
    1 ; File name     :   CgaSnow.inc
    2 ; Project name  :   AssemblyLibrary
    3 ; Created date  :   8.10.2010
    4 ; Last update   :   11.10.2010
    5 ; Author        :   Tomi Tilli
     1; Project name  :   Assembly Library
    62; Description   :   Macros for preventing CGA snow.
    73%ifndef CGASNOW_INC
    … …  
    95
    106;--------------------------------------------------------------------
    11 ; WAIT_RETRACE_IF_NECESSARY_THEN
     7; CALL_WAIT_FOR_RETRACE_IF_NECESSARY_THEN
     8; JMP_WAIT_FOR_RETRACE_IF_NECESSARY_THEN
    129;   Parameters:
    1310;       %1:     Instruction that accessed CGA memory
    … …  
    2219;       AX, DX
    2320;--------------------------------------------------------------------
    24 %macro WAIT_RETRACE_IF_NECESSARY_THEN 1
     21%macro CALL_WAIT_FOR_RETRACE_IF_NECESSARY_THEN 1
    2522%ifdef ELIMINATE_CGA_SNOW
    2623    %ifidn %1, stosb
    … …  
    3128        call    CgaSnow_RepMovsb
    3229    %else
    33         %error  "Invalid instruction passed to WAIT_RETRACE_IF_NECESSARY_THEN"
     30        %error  "Invalid instruction passed to CALL_WAIT_FOR_RETRACE_IF_NECESSARY_THEN"
    3431    %endif
    3532%else   ; No CGA snow prevention
    … …  
    3835    %else
    3936        %1  ; Single instruction
     37    %endif
     38%endif
     39%endmacro
     40
     41%macro JMP_WAIT_FOR_RETRACE_IF_NECESSARY_THEN 1
     42%ifdef ELIMINATE_CGA_SNOW
     43    %ifidn %1, stosb
     44        jmp     CgaSnow_Stosb
     45    %elifidn %1, stosw
     46        jmp     CgaSnow_Stosw
     47    %elifidn %1, rep movsb
     48        jmp     CgaSnow_RepMovsb
     49    %else
     50        %error  "Invalid instruction passed to JMP_WAIT_FOR_RETRACE_IF_NECESSARY_THEN"
     51    %endif
     52%else   ; No CGA snow prevention
     53    %ifidn %1, rep movsb
     54        eSEG_STR rep, es, movsb
     55        ret
     56    %else
     57        %1  ; Single instruction
     58        ret
    4059    %endif
    4160%endif
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