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| Both sides previous revisionPrevious revisionNext revision | Previous revisionNext revisionBoth sides next revision | ||
| en:docs:kernel:doskrnl [2023/12/13 12:29] – prokushev | en:docs:kernel:doskrnl [2023/12/18 06:24] – prokushev | ||
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| + | {{page> | ||
| + | |||
| ====== DOSKRNL ====== | ====== DOSKRNL ====== | ||
| Line 29: | Line 31: | ||
| | ???? | ??? | ???? | | | ???? | ??? | ???? | | ||
| - | DEVICES is ASCIIZ string with list of DOS devices to be loaded divided by 0AH (???) | + | DEVICES is ASCIIZ string with list of DOS devices to be loaded divided by 0AH |
| SHELL is ASCIIZ string. | SHELL is ASCIIZ string. | ||
| - | SHELL arguments is ASCIIZ string (seems, | + | SHELL arguments is ASCIIZ string (first byte is as string length, string ends with 0dh) |
| VDD is linked list of structures: | VDD is linked list of structures: | ||
| - | VDDs linked list (in init area) in standard DOS Device drivers format | + | VDDs linked list in standard DOS Device drivers format. Entry can be placed in HMA, so need to be sure A20 enabled for such entries. |
| ^ offset ^ Size ^ Description ^ | ^ offset ^ Size ^ Description ^ | ||
| Line 44: | Line 46: | ||
| | ::: | ::: | Bit 15 = 1 if char device 0 if blk | | | ::: | ::: | Bit 15 = 1 if char device 0 if blk | | ||
| | ::: | ::: | if bit 15 is 1 | | | ::: | ::: | if bit 15 is 1 | | ||
| - | | ::: | ::: | Bit 0 = 1 if Current | + | | ::: | ::: | Bit 0 = 1 if Current |
| - | | ::: | ::: | Bit 1 = 1 if Current | + | | ::: | ::: | Bit 1 = 1 if Current |
| - | | ::: | ::: | Bit 2 = 1 if Current | + | | ::: | ::: | Bit 2 = 1 if Current |
| - | | ::: | ::: | Bit 3 = 1 if Current CLOCK dev | | + | | ::: | ::: | Bit 3 = 1 if Current CLOCK device |
| | ::: | ::: | Bit 4 = 1 if SPECIAL | | ::: | ::: | Bit 4 = 1 if SPECIAL | ||
| | ::: | ::: | Bit 14 is the IOCTL bit | | | ::: | ::: | Bit 14 is the IOCTL bit | | ||
| Line 60: | Line 62: | ||
| | Free | [BP+0]:0 | | | Free | [BP+0]:0 | | ||
| | DOSKRNL | | DOSKRNL | ||
| - | | some data | + | | Some data (VDD entries was found here) | ??? | |
| | CMOS Data | 40:0 | | | CMOS Data | 40:0 | | ||
| | Interrupt vectors | 0:0 | | | Interrupt vectors | 0:0 | | ||
| Line 81: | Line 83: | ||
| Also most of these setting can be adjusted via DOS Properties (aka DOS Settings). Refer [[https:// | Also most of these setting can be adjusted via DOS Properties (aka DOS Settings). Refer [[https:// | ||
| + | |||
| + | ===== Properties ===== | ||
| + | |||
| + | * COM_DIRECT_ACCESS | ||
| + | * COM_HOLD | ||
| + | * COM_RECEIVE_BUFFER_FLUSH | ||
| + | * COM_SELECT | ||
| + | * DOS_AUTOEXEC | ||
| + | * DOS_BACKGROUND_EXECUTION | ||
| + | * DOS_BREAK | ||
| + | * DOS_DEVICE | ||
| + | * DOS_FCBS | ||
| + | * DOS_FCBS_KEEP | ||
| + | * DOS_FILES | ||
| + | * DOS_HIGH | ||
| + | * DOS_LASTDRIVE | ||
| + | * DOS_RMSIZE | ||
| + | * DOS_SHELL | ||
| + | * DOS_STARTUP_DRIVE | ||
| + | * DOS_UMB | ||
| + | * DOS_VERSION | ||
| + | * DPMI_DOS_API | ||
| + | * DPMI_MEMORY_LIMIT | ||
| + | * DPMI_NETWORK_BUFF_SIZE | ||
| + | * EMS_FRAME_LOCATION | ||
| + | * EMS_HIGH_OS_MAP_REGION | ||
| + | * EMS_LOW_OS_MAP_REGION | ||
| + | * EMS_MEMORY_LIMIT | ||
| + | * HW_NOSOUND | ||
| + | * HW_ROM_TO_RAM | ||
| + | * HW_TIMER | ||
| + | * IDLE_SECONDS | ||
| + | * IDLE_SENSITIVITY | ||
| + | * INT_DURING_IO | ||
| + | * KBD_ALTHOME_BYPASS | ||
| + | * KBD_BUFFER_EXTEND | ||
| + | * KBD_CTRL_BYPASS | ||
| + | * KBD_RATE_LOCK | ||
| + | * MEM_EXCLUDE_REGION | ||
| + | * MEM_INCLUDE_REGION | ||
| + | * MOUSE_EXCLUSIVE_ACCESS | ||
| + | * PRINT_SEPARATE_OUTPUT | ||
| + | * PRINT_TIMEOUT | ||
| + | * SESSION_PRIORITY | ||
| + | * VIDEO_8514A_XGA_IOTRAP | ||
| + | * VIDEO_FASTPASTE | ||
| + | * VIDEO_MODE_RESTRICTIONS | ||
| + | * VIDEO_ONDEMAND_MEMORY | ||
| + | * VIDEO_RETRACE_EMULATION | ||
| + | * VIDEO_ROM_EMULATION | ||
| + | * VIDEO_SWITCH_NOTIFICATION | ||
| + | * VIDEO_WINDOW_REFRESH | ||
| + | * XMS_HANDLES | ||
| + | * XMS_MEMORY_LIMIT | ||
| + | * XMS_MINIMUM_HMA | ||
| ===== API ===== | ===== API ===== | ||