XMS Memory Requirements
Some IBM PC MS-DOS games require a certain amount of XMS memory in order to execute. XMS stands for eXtended Memory Specification. XMS is only applicable to i80286 CPUs and greater; that is, Intel CPUs that can address 1 meg of RAM or greater, which i808x CPUs by default cannot.
XMS can be used to increase free conventional memory and emulate EMS memory.
XMS 2.0 supported up to 64 megs of RAM in 1988 whereas XMS 3.0 of 1991 supported up to 4 gigs of RAM.
In 1996 many serious gamers had PCs with 64 megs of EDO DRAM.
The amount of XMS memory available can be checked via Microsoft Diagnostics (msd) or the chkdsk and mem commands.
In some DOS games XMS removes sound stuttering and increases framerates and overall game performance.
The HIMEM.SYS DOS device driver is an example of an XMS memory manager (XMM).
XMS memory requirements for each game are given below.
Format is: Computer Game / Developer / Year / XMS memory requirement.
- 7th Guest IBM PC MS-DOS MS-DOS Trilobyte 1993: 2 megs
- Actua Soccer IBM PC MS-DOS Gremlin Interactive 1995: 3 megs
- Al-Qadim IBM PC MS-DOS Cyberlore Studios 1994: 2,250,000 bytes
- Battle Arena Toshinden IBM PC MS-DOS Digital Dialect 1996: 8 megs
- Beneath a Steel Sky IBM PC MS-DOS Revolution 1990: 2 megs
- Bust-A-Move 2 IBM PC MS-DOS Acclaim Entertainment 1996: 12 megs
- Command and Conquer IBM PC MS-DOS Westwood 1995: 6 megs
- Crusader No Remorse IBM PC MS-DOS Origin Systems 1995: 6.8 megs
- Dark Sun Shattered Lands IBM PC MS-DOS SSI 1993: 1 meg
- Dark Sun Wake of the Ravager IBM PC MS-DOS SSI 1994: 2 megs
- Dune 2 IBM PC MS-DOS Westwood 1992: 1 meg
- Dungeon Hack IBM PC MS-DOS Dreamforge 1993: 1,048,576 bytes
- Elder Scrolls: Arena IBM PC MS-DOS Bethesda 1994: 2 megs
- FIFA Soccer 96 IBM PC MS-DOS Extended Play Productions 1995: 7.5 megs
- Flying Tigers IBM PC MS-DOS Jay Kramer 1995: 4 megs
- Heroes of Might and Magic IBM PC MS-DOS New World Computing 1995: 5 megs
- Jagged Alliance IBM PC MS-DOS MadLab 1995: 3.5 megs
- Jane's AH-64D Longbow IBM PC MS-DOS Origin Systems 1996: 15 megs
- Jane's ATF Advanced Tactical Fighters IBM PC MS-DOS EA 1996: 6,900 kbytes
- Jazz Jackrabbit IBM PC MS-DOS Epic MegaGames 1994: 2.5 megs
- Lands of Lore Westwood Studios 1993: 911,360 bytes
- Lords of the Realm 2 Impressions Games 1996: 6 megs
- Master of Orion IBM PC MS-DOS Simtex 1993: 700 kbytes
- MechWarrior 2 IBM PC MS-DOS Activision 1995: 7 megs
- Menzoberranzan IBM PC MS-DOS DreamForge 1994: 2,700,000 bytes
- Microsoft Flight Simulator 5.0 IBM PC MS-DOS Bruce Artwick 1993: 800 kbytes
- NBA Live 95 IBM PC MS-DOS Hitmen Productions 1995: 7,274,496 bytes
- NBA Live 96 IBM PC MS-DOS Hitmen Productions 1995: 7,424,000 bytes
- NBA Live 97 IBM PC MS-DOS Hitmen Productions 1996: 12 megs
- Need for Speed IBM PC MS-DOS EA Canada 1995: 7,274,496 bytes
- Panzer General IBM PC MS-DOS Strategic Simulations Inc 1994: 2,734 kbytes
- PGA Tour Golf 486 IBM PC MS-DOS Hitmen Productions 1994: 7 megs
- Ravenloft Strahd's Possession IBM PC MS-DOS DreamForge 1994: 2,720,000 bytes
- Ravenloft Stone Prophet IBM PC MS-DOS DreamForge 1995: 2,700,000 bytes
- Settlers 2 Blue Byte IBM PC MS-DOS 1996: 7 megs
- Star Fighter 3000 IBM PC MS-DOS Fednet 1996: 5.5 megs
- Steel Panthers IBM PC MS-DOS SSI Gary Grigsby 1995: 6 megs
- Strike Commander IBM PC MS-DOS Origin Systems 1993: 2,765,000 bytes
- Su-27 Flanker IBM PC MS-DOS Eagle Dynamics 1996: 6 megs
- Super Street Fighter 2 Turbo IBM PC MS-DOS Eurocom 1995: 4 megs
- Syndicate IBM PC MS-DOS Bullfrog Productions 1993: 3,098,000 bytes
- System Shock IBM PC MS-DOS Looking Glass 1994: 3,072 kbytes
- Ultima 7 Black Gate IBM PC MS-DOS Origin Systems 1992: 1 meg
- Ultima 8 Pagan IBM PC MS-DOS Origin Systems 1994: 3,580,000 bytes
- U.S. Navy Fighters IBM PC MS-DOS EA 1994: 6,900 kbytes
- Warlords 2 IBM PC MS-DOS SSG 1993: 2 megs
- Wing Commander Privateer IBM PC MS-DOS Origin Systems 1993: 4 megs
- Wing Commander 3 IBM PC MS-DOS Origin Systems 1994: 15 megs
- Wings of Glory IBM PC MS-DOS Origin Systems 1995: 6,225,920 bytes
- X-COM Apocalypse IBM PC MS-DOS Mythos Games 1997: 6,573 kbytes
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