IBM Personal Computer XT

The IBM PC XT (Personal Computer XT) was introduced by IBM in March 1983, as successor of the IBM PC. It came with IBM PC BASIC in ROM. In its day the terms "IBM XT" and "XT" were often used as class distinctions, so an "XT compatible" was used for a computer that had a full 640k or more of memory and a hard disk drive as standard while a "PC compatible" was used for computers with lower specifications, but that term is never used in today's parlance.

Features

• Processor: Intel 8088 4.77 MHz
• Co-Processor: Intel 8087
• 10 MB Seagate ST-412 hard drive with Xebec 1210 Modified Frequency Modulation (MFM) controller
• Asynchronous Adapter
• Expansion slots: 8 (8 bit)
• Video cards
  • Monochrome Display Adapter (MDA)
  • Color Graphics Adapter (CGA)
  • Enhanced Graphics Adapter (EGA)
  • Professional Graphics Controller (PGC)

Models

• PC XT (5160)

Model	Memory	Diskette Drive	Harddisk Drive	Adapter Cards
068	256 kb	1 x 5.25" DS	-
078	256 kb	2 x 5.25" DS	-
086	256 kb	1 x 5.25" DS	10 MB
087	128 kb	1 x 5.25" DS	10 MB	Asynchronous Communications Adapter
088	640 kb	1 x Half-high 5.25" 360Kb DS	20 MB
089	640 kb	1 x Half-high 5.25" 360Kb DS	20 MB
267	256 kb	1 x Half-high 5.25" 360Kb DS	-
268	256 kb	1 x Half-high 5.25" 360Kb DS	-
277	256 kb	2 x Half-high 5.25" 360Kb DS	-
278	256 kb	2 x Half-high 5.25" 360Kb DS	-
470	256 kb	1 x 5.25" DS	-	Financial Input Adapter
589	256 kb	1 x 5.25" DS	-	PC/370-P Card

• PC XT 286 (5162)

Links

• 183-027 (1983-03-08) IBM Personal Computer Family Expanded IBM Personal Computer XT, 5160 Model 87
• 184-112 (1984-09-10) IBM 5175 PC Professional Graphics Display and PC Professional Graphics Controller for IBM PC Family