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ANSI.SYS GudangMovies21 Rebahinxxi LK21
ANSI.SYS is a device driver in the DOS family of operating systems that provides extra console functions through ANSI escape sequences. It is partially based upon a subset of the text terminal control standard proposed by the ANSI X3L2 Technical Committee on Codes and Character Sets (the "X3 Committee").
As it was not installed by default, and was notoriously slow, little software took advantage of it and instead resorted to directly manipulating the IBM PC hardware. A number of third-party alternatives that ran at reasonable speed were created, such as ANSI.COM, NANSI.SYS and ANSIPLUS.EXE to attempt to change this.
Usage
To use ANSI.SYS under DOS, a line is added to the CONFIG.SYS (or CONFIG.NT under Windows NT based versions of Windows) file that reads:
DEVICE=drive:\path\ANSI.SYS options
where drive: and path are the drive letter and path to the directory in which the file ANSI.SYS is found, and options can be a number of optional switches to control the behaviour. ANSI.SYS may also be loaded into upper memory via DEVICEHIGH/HIDEVICE.
/K use extended keyboard BIOS functions (INT 16h) rather than standard ones This made the F11 and F12 keys work.
/L force number of lines
/R adjust line scrolling to support screen readers
/S or /SCREENSIZE set screensize
/X support redefinition of extended key codes independent of standard codes
Functionality
Using this driver, programs that write to the standard output can write escape sequences to make use of the 16 text foreground colors and 8 background colors available in VGA-compatible text mode, make text blink, change the location of the cursor on the screen, and blank the screen. They could also change the video mode from standard 80×25 text mode to a number of different graphics modes (for example, 320×200 graphics mode with text drawn as pixels, though ANSI.SYS is not able to turn individual pixels on and off).
The standard ANSI.SYS is very slow as it maps escape sequences to BIOS calls (which managed to be designed so that two calls were needed to put a character on the screen and move the cursor right). Several companies made third-party replacements such as NANSI.SYS that interface directly with the video memory, in a similar way to most DOS programs that have a full-screen user interface.
COMMAND.COM checked if this driver was in use, and changed the CLS command to use an escape sequence instead of a BIOS call.
= Keyboard remapping
=
An interesting (mis)feature of ANSI.SYS is the ability to remap any key on the keyboard in order to perform shortcuts or macros for complex instructions. Using special escape sequences, the user can define any keystroke that has a character-code mapping to simulate an arbitrary sequence of such keystrokes. This was used to create simple trojans out of text files laced with nefarious keyboard remaps, known as "ANSI bombs". A number of products were released to protect users against this:
Many replacements for ANSI.SYS support a command line switch to disable the key remapping feature, f.e. the option /S (Secure) in Datalight ROM-DOS or NANSI.SYS of FreeDOS. Other ANSI drivers like ANSIPLUS can be configured to disable the redefinition of keys as well.
Some replacements were deliberately designed never to support the keyboard remapping functions.
PKWARE produced a terminate-and-stay-resident program, PKSFANSI (PK Safe ANSI), which filters out keyboard remapping escape codes as they are written to the standard output. This has the advantage that the user can load some useful remappings from a text file and then run PKSFANSI to prevent further, possibly malicious remappings.
Occurrence
ANSI.SYS appeared in MS-DOS 2.0, the first version of the operating system supporting device drivers. It was supported by all following versions of MS-DOS. It is also present in many non-Microsoft DOS systems, e.g. IBM PC DOS and DR-DOS.
ANSI.SYS was required to run some software that used its cursor and color control functions. It could also be used to enable elaborate color codes in the COMMAND.COM prompt. These uses were overshadowed by the use of ANSI.SYS in BBSes; ANSI escape sequences were used to enable BBSes to send text graphics more elaborate than ASCII art, and to control the cursor in ways that were used in a number of online games and similar features.
Most versions of Windows did not support ANSI escape codes in any useful way (it could be used by MSDOS emulation in some versions). In Windows 10 support for similar escape sequences was built into the Win32 console (the text terminal window), but must be activated using the Windows API function SetConsoleMode by setting the ENABLE_VIRTUAL_TERMINAL_PROCESSING flag.
Features
CSI (Control Sequence Introducer) is a placeholder for the common two-byte escape lead-in sequence "ESC [" (that is, 0x1B 0x5B). The ANSI standard also defines an alternative single-byte CSI code 0x9B, which is not supported by ANSI.SYS (this code instead drew a cent sign ⟨¢⟩ from CP437).
Standard DOS ANSI.SYS drivers support only the following sub-set of ANSI escape sequences:
There are also some escape sequences specific to the implementation of ANSI.SYS. They are not generally supported by ANSI consoles in other operating systems.
In some DOS implementations, video modes above 7 are not documented. Under Multiuser DOS, the only valid argument in conjunction with PCTERM is 7.
See also
ANSI escape sequence
Notes
References
External links
"In DOS, How Can I Modify My Prompt or the Screen Color?". Indiana University. 2010-10-25. Archived from the original on 2017-09-11. Retrieved 2017-09-11.
Cambus, Frederic (2017-04-19). "A set of tools for converting ANSi/BiN/ADF/iDF/TUNDRA/XBiN files into PNG images". Archived from the original on 2017-09-11. Retrieved 2017-09-11.
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Feb 4, 2016 · Runing ANSI.SYS in Windows 10 I am porting old Fortran software into Windows 10 64 bit and am running it using the command line in a DOS window. In the "old days" I was able to use ANSI.SYS by adding the appropriate command to the CONFIG.SYS file.
I have written and am still using a number of extended DOS (DOS32) programs, some of which use ANSI.SYS. Although Windows-7 has ANSI.SYS, using it the classical way through a command device=<path>\ansi.sys in CONFIG.SYS does not help. Which file replaces CONFIG.SYS in Windows-7? Will I be able to access ANSI.SYS through that file> Kind …
Doskey et Ansi.sys - Communauté Microsoft
Feb 27, 2018 · Effectivement, en tapant Help, on ne voit plus Ansi.sys, et on ne voit plus non plus Edit. C'est assez ennuyeux, car seul Edit permettait de modifier certains fichiers comme config.nt par exemple, qui ne pouvaient pas l'être avec Notepad (sauf en bootant sur un autre système par exemple). Si tu as une solution, je suis preneur.
How goes Winows 10 display ansi.sys text. The dos drives don't ...
Jan 2, 2016 · How do I install anti.sys comparable drivers. DOS anti.sys does not install.
Oct 1, 2020 · Heute arbeite ich unter Windows 10 und vermisse den ansi.sys. Ansi.sys wurde früher in der config.sys eingebunden. Für C++ war das ganz nützlich. Heute möchte ich wieder in C++ arbeiten und Programme schreiben die in der Windows-Konsole. laufen sollen.
config.nt and autoexec.nt - Microsoft Community
Jul 18, 2010 · I can change the parameters in config.nt and autoexec.nt but they don't seem to execute when I open a command prompt. I want to set the DIRCMD, invoke ANSI.SYS, use fcbs etc.
Buen Dia Sres. Aguien sabe si en windows 10 se puede levantar el ANSI.SYS y como hacerlo..? En windows 7 se puede agregando una linea en el config.nt
Jun 27, 2018 · Windows 10 Home – YTMG3-N6DKC-DKB77-7M9GH-8HVX7. Windows 10 Home Single Language – BT79Q-G7N6G-PGBYW-4YWX6-6F4BT.
Dec 23, 2015 · The program is a EPOS system running in a window on freshly upgraded from Windows 7 to Windows 10. The program was running great in Window 7. I have a second upgraded Window 10 machine that had been upgrade a few weeks previously and is running the program well with functioning menus etc. Displaying correctly without the ANSI.SYS installed.
ansi.sys laden in windows 7 Professional 32-bit - Microsoft …
We gebruiken nog een oud (16-bit) dos programma die gebruik maakt van ansi.sys. In windows XP lukte het door in config.nt (c:\windows\system32\config.nt) ansi.sys bij te plaatsen. Ditzelfde heb ik gedaan in windows 7 (c:\windows\system32\config.nt) maar hier blijkt dit niet te werken, de ansi codes worden als gewone tekst weergegeven.
