http://wiki.nox-rhea.org/ Thu, 09 Apr 2026 17:17:28 +0000 FeedCreator 1.8 http://wiki.nox-rhea.org/_media/wiki/dokuwiki.svg http://wiki.nox-rhea.org/ http://wiki.nox-rhea.org/back2root/ibm-pc-ms-dos/interrupts/old/interrupt_list-00-0f?rev=1672887653&do=diff MSDOS - Interrupt List 00h-0Fh The use of -> instead of = signifies that the indicated register or register pair contains a pointer to the specified item, rather than the item itself. One or more letters may follow the interrupt number; they have the following meanings: anonymous@undisclosed.example.com (Anonymous) Thu, 05 Jan 2023 03:00:53 +0000 http://wiki.nox-rhea.org/back2root/ibm-pc-ms-dos/interrupts/old/ms_interrupt_list-10?rev=1672887689&do=diff MSDOS - Interrupt List 10h CPU-generated (80286+) - COPROCESSOR ERROR generated by the CPU when the -ERROR pin is asserted by the coprocessor AT's and clones usually wire the coprocessor to use IRQ13, but not all get it right SeeAlso: INT 09“hardware anonymous@undisclosed.example.com (Anonymous) Thu, 05 Jan 2023 03:01:29 +0000 http://wiki.nox-rhea.org/back2root/ibm-pc-ms-dos/interrupts/old/ms_interrupt_list-11-15?rev=1751878496&do=diff MSDOS - Interrupt List 11h-20h INT 11 INT 11 - CPU-generated (80486+) - ALIGNMENT CHECK Bit AC in the EFLAGS register enables this interrupt on a memory reference on a mis-aligned address when in privilege mode 3. INT 11 - BIOS - GET EQUIPMENT LIST anonymous@undisclosed.example.com (Anonymous) Mon, 07 Jul 2025 08:54:56 +0000 http://wiki.nox-rhea.org/back2root/ibm-pc-ms-dos/interrupts/old/ms_interrupt_list-16?rev=1674158614&do=diff MSDOS - Interrupt List 16h 00h - KEYBOARD - GET KEYSTROKE AH = 00h Return: AH = BIOS scan code AL = ASCII character on extended keyboards, this function discards any extended keystrokes, returning only when a non-extended keystroke is available anonymous@undisclosed.example.com (Anonymous) Thu, 19 Jan 2023 20:03:34 +0000 http://wiki.nox-rhea.org/back2root/ibm-pc-ms-dos/interrupts/old/ms_interrupt_list-17-20?rev=1672887689&do=diff MSDOS - Interrupt List 17h-20h INT 17 ----------17----DX0ABC----------------------- INT 17 - PRINTER - LPTx v5.x INSTALLATION CHECK DX = 0ABCh Return: AX = AAAAh DX = BAAAh ES = code segment of resident portion ----------17----DX0B90--------------- anonymous@undisclosed.example.com (Anonymous) Thu, 05 Jan 2023 03:01:29 +0000 http://wiki.nox-rhea.org/back2root/ibm-pc-ms-dos/interrupts/old/ms_interrupt_list-21?rev=1672887689&do=diff MSDOS - Interrupt List 21h 00h - DOS 1+ - TERMINATE PROGRAM AH = 00h CS = PSP segment Microsoft recomments using INT 21/AH=4Ch for DOS 2+ execution continues at address stored in INT 22 after DOS performs whatever cleanup it needs to do if the PSP is its own parent, the process's memory is not freed; if INT 22 additionally points into the terminating program, the process is effectively NOT terminated anonymous@undisclosed.example.com (Anonymous) Thu, 05 Jan 2023 03:01:29 +0000 http://wiki.nox-rhea.org/back2root/ibm-pc-ms-dos/interrupts/old/ms_interrupt_list-22-30?rev=1672887689&do=diff MSDOS - Interrupt List 22h-30h ----------22--------------------------------- INT 22 - DOS 1+ - PROGRAM TERMINATION ADDRESS specifies the address of the routine which is to be given control after a program is terminated; should never be called directly, since it does not point at an interrupt handler anonymous@undisclosed.example.com (Anonymous) Thu, 05 Jan 2023 03:01:29 +0000 http://wiki.nox-rhea.org/back2root/ibm-pc-ms-dos/interrupts/old/ms_interrupt_list-31-40?rev=1751876694&do=diff MSDOS - Interrupt List 31h-40h INT 31 - overwritten by CP/M jump instruction in INT 30 ----------310000----------------------------- INT 31 P - DPMI 0.9+ - ALLOCATE LDT DESCRIPTORS AX = 0000h CX = number of descriptors to allocate Return: CF clear if successful anonymous@undisclosed.example.com (Anonymous) Mon, 07 Jul 2025 08:24:54 +0000 http://wiki.nox-rhea.org/back2root/ibm-pc-ms-dos/interrupts/old/ms_interrupt_list-41-50?rev=1751876755&do=diff MSDOS - Interrupt List 41h-50h INT 41 - SYSTEM DATA - HARD DISK 0 PARAMETER TABLE the default parameter table array is located at F000h:E401h in 100% compatible BIOSes; the pointer may be overridden by the hard disk controller's BIOS to support drive formats unknown to the ROM BIOS anonymous@undisclosed.example.com (Anonymous) Mon, 07 Jul 2025 08:25:55 +0000 http://wiki.nox-rhea.org/back2root/ibm-pc-ms-dos/interrupts/old/ms_interrupt_list-51-60?rev=1672887689&do=diff MSDOS - Interrupt List 51h-60h INT 51 INT 51 - through 53 - IRQ1-IRQ3 relocated by DESQview Note: this is the default location for older versions; see INT 50“DESQview” for details of interrupt relocation SeeAlso: INT 50“DESQview”,INT 54“ anonymous@undisclosed.example.com (Anonymous) Thu, 05 Jan 2023 03:01:29 +0000 http://wiki.nox-rhea.org/back2root/ibm-pc-ms-dos/interrupts/old/ms_interrupt_list-61-fd?rev=1672887689&do=diff MSDOS - Interrupt List 61h-FDh INT 61 - reserved for user interrupt INT 61 - Atari Portfolio - EXTENDED BIOS provides subfunctions such as turning off the machine, accessing internal variables, and mapping memory cards SeeAlso: INT 60“Atari” anonymous@undisclosed.example.com (Anonymous) Thu, 05 Jan 2023 03:01:29 +0000 http://wiki.nox-rhea.org/back2root/ibm-pc-ms-dos/interrupts/old/start?rev=1672887701&do=diff Sous-catégories : Pas de sous-catégories. * MSDOS - Interrupt List 00h-0Fh * MSDOS - Interrupt List 10h * MSDOS - Interrupt List 11h-20h * MSDOS - Interrupt List 16h * MSDOS - Interrupt List 17h-20h * MSDOS - Interrupt List 21h * MSDOS - Interrupt List 22h-30h * MSDOS - Interrupt List 31h-40h * MSDOS - Interrupt List 41h-50h * MSDOS - Interrupt List 51h-60h * MSDOS - Interrupt List 61h-FDh Return to IBM PC anonymous@undisclosed.example.com (Anonymous) Thu, 05 Jan 2023 03:01:41 +0000