IBM PC XT (5160) - Revision history

Josh: Reduce infobox badge size from 250px to 150px

2026-05-23T16:32:22Z

Reduce infobox badge size from 250px to 150px

← Older revision		Revision as of 17:32, 23 May 2026
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	{{Infobox computer		{{Infobox computer
	\| name = IBM Personal Computer XT		\| name = IBM Personal Computer XT
	\| logo = [[File:IBM PC XT 5160 badge.svg\|~~250px~~]]		\| logo = [[File:IBM PC XT 5160 badge.svg\|150px]]
	\| image = [[File:IBM PC XT 5160.jpg\|260px]]		\| image = [[File:IBM PC XT 5160.jpg\|260px]]
	\| caption = IBM Personal Computer XT (5160)		\| caption = IBM Personal Computer XT (5160)

Josh: Add IBM badge to infobox (logo = File:IBM PC XT 5160 badge.svg)

2026-05-23T16:30:48Z

Add IBM badge to infobox (logo = File:IBM PC XT 5160 badge.svg)

← Older revision		Revision as of 17:30, 23 May 2026
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	{{Infobox computer		{{Infobox computer
	\| name = IBM Personal Computer XT		\| name = IBM Personal Computer XT
			\| logo = [[File:IBM PC XT 5160 badge.svg\|250px]]
	\| image = [[File:IBM PC XT 5160.jpg\|260px]]		\| image = [[File:IBM PC XT 5160.jpg\|260px]]
	\| caption = IBM Personal Computer XT (5160)		\| caption = IBM Personal Computer XT (5160)

Josh: /* BIOS revisions */

2026-05-21T10:03:28Z

BIOS revisions

← Older revision		Revision as of 11:03, 21 May 2026
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	=== BIOS revisions ===		=== BIOS revisions ===

	{\| class="wikitable styled-table" style="width:~~100~~%; text-align:center;"		{\| class="wikitable styled-table" style="width:70%; text-align:center;"
	\|+'''IBM 5160 BIOS revisions'''		\|+'''IBM 5160 BIOS revisions'''
	! Date !! U18 / U19 part numbers !! ROM type !! Floppy support !! Notes		! Date !! U18 / U19 part numbers !! ROM type !! Floppy support !! Notes

Josh: /* Memory and ROM */

2026-05-21T10:03:20Z

Memory and ROM

← Older revision		Revision as of 11:03, 21 May 2026
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	<templatestyles src="Template:StyledTable/styles.css" />		<templatestyles src="Template:StyledTable/styles.css" />
	{\| class="wikitable styled-table" style="width:~~100~~%; text-align:center;"		{\| class="wikitable styled-table" style="width:70%; text-align:center;"
	\|+'''IBM 5160 motherboard revisions'''		\|+'''IBM 5160 motherboard revisions'''
	! Silkscreen marking !! RAM banks !! BIOS shipped !! Notes		! Silkscreen marking !! RAM banks !! BIOS shipped !! Notes

Josh: Comprehensive rewrite/creation of the IBM PC XT (5160) page set with verified facts and embedded content per RTC style guide

2026-05-21T10:02:08Z

Comprehensive rewrite/creation of the IBM PC XT (5160) page set with verified facts and embedded content per RTC style guide

Show changes

Josh: Rewrite with verified information only — remove fabricated part numbers (CGA 1501486, MDA 1501481, FDD Adapter 1501507, Fixed Disk Adapter 6181682, Model F dimensions/weight), remove placeholder image filenames, replace speculative capacitor designator table with verified minuszerodegrees.net source data (all tantalums marked C7, 10µF/16V), fix 5150 dimensions/weight to 20x16x5.5 inches / 21-28 lbs, fix Model F dimensions/weight to 19x9x1.5in / 7lb4oz / 3.3kg. Per Joshua's feedback: never pub...

2026-05-21T09:26:02Z

Rewrite with verified information only — remove fabricated part numbers (CGA 1501486, MDA 1501481, FDD Adapter 1501507, Fixed Disk Adapter 6181682, Model F dimensions/weight), remove placeholder image filenames, replace speculative capacitor designator table with verified minuszerodegrees.net source data (all tantalums marked C7, 10µF/16V), fix 5150 dimensions/weight to 20x16x5.5 inches / 21-28 lbs, fix Model F dimensions/weight to 19x9x1.5in / 7lb4oz / 3.3kg. Per Joshua's feedback: never pub...

← Older revision		Revision as of 10:26, 21 May 2026
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	{{Infobox computer		{{Infobox computer
	\| name = IBM Personal Computer XT		\| name = IBM Personal Computer XT
	\| image = [[File:IBM ~~5160~~ PC XT ~~placeholder~~.~~png~~\|260px]]		\| image = [[File:IBM PC XT 5160.jpg\|260px]]
	\| caption = IBM Personal Computer XT (5160) ~~with monitor and Model F keyboard~~		\| caption = IBM Personal Computer XT (5160)
	~~\| logo = [[File:IBM logo.svg\|110px]]~~
	\| developer = IBM Entry Systems Division, Boca Raton		\| developer = IBM Entry Systems Division, Boca Raton
	\| manufacturer = IBM		\| manufacturer = IBM
	\| type = Desktop personal computer		\| type = Desktop personal computer
	\| release date = March 8, 1983		\| release date = March 8, 1983
	~~\| discontinued = April 1987~~
	~~\| price = US$4,995 (1983, with 10 MB HDD); US$7,545 (configured)~~
	\| cpu = Intel 8088 @ 4.77 MHz<br/>Optional Intel 8087 FPU		\| cpu = Intel 8088 @ 4.77 MHz<br/>Optional Intel 8087 FPU
	\| memory = 128 ~~KB - 256~~ KB on-board; expandable to 640 KB ~~via ISA cards~~		\| memory = 128 KB on-board base configuration; expandable to 640 KB
	\| storage = One 360 KB 5.25" floppy + one 10 MB MFM hard disk (standard); 20 MB option from ~~1985~~		\| storage = One 360 KB 5.25" floppy + one 10 MB MFM hard disk (standard); 20 MB option from later production
	\| display = MDA + [[IBM 5151]] or CGA + [[IBM 5153]] (separate adapter card)		\| display = MDA + [[IBM 5151]] or CGA + [[IBM 5153]] (separate adapter card)
	\| sound = Internal PC speaker via Intel 8253-5		\| sound = Internal PC speaker via Intel 8253-5
	~~\| dimensions = 19.6" W × 16" D × 5.5" H (498 × 406 × 140 mm)~~
	~~\| weight = ~14 kg (32 lb) with HDD~~
	\| os = IBM PC DOS 2.0 onwards; XENIX 86; CP/M-86		\| os = IBM PC DOS 2.0 onwards; XENIX 86; CP/M-86
	\| predecessor = [[IBM PC (5150)]]		\| predecessor = [[IBM PC (5150)]]
	~~\| successor = [[IBM PC AT (5170)]]~~		\| codename = (continuation of the Acorn / Chess project)
	\| codename = ~~Project Chess~~ (continuation)
	\| model = 5160		\| model = 5160
	}}		}}

	The '''IBM Personal Computer XT''' (model '''5160''', "eXtended Technology") is the second-generation IBM PC, announced March 8, 1983 ~~and shipped until April 1987~~. It uses the same Intel 8088 at 4.77 MHz as the [[IBM PC (5150)\|5150]] and is software-compatible with it, but adds three things the 5150 lacked at launch:		The '''IBM Personal Computer XT''' (model '''5160''', "eXtended Technology") is the second-generation IBM PC, announced March 8, 1983. It uses the same Intel 8088 at 4.77 MHz as the [[IBM PC (5150)\|5150]] and is software-compatible with it, but adds three things the 5150 lacked at launch:

	* '''Built-in hard disk support''' — every XT shipped with a 10 MB MFM hard disk (later 20 MB), driven by the [[IBM Fixed Disk Adapter]] card.		* '''Built-in hard disk support''' — every XT shipped with a 10 MB MFM hard disk (later 20 MB), driven by the [[IBM Fixed Disk Adapter]] card. The standard hard drive was a Seagate ST-412 paired with a Xebec 1210 MFM controller.
	* '''A 130 W power supply''' — sufficient to run the hard disk.		* '''A 130 W power supply''' — sufficient to run the hard disk.
	* '''Eight ISA slots''' instead of the 5150's five, on a redesigned motherboard.		* '''Eight ISA slots''' instead of the 5150's five, on a redesigned motherboard.

	The XT motherboard also drops the cassette port (~~no Type 1 PSU and no cassette I/O circuit~~)~~, supports up to 256 KB of on-board RAM in~~ standard ~~configuration (and 640 KB on later boards)~~, and uses the same [[IBM Model F (83-key)\|83-key Model F]] keyboard as the 5150.		The XT motherboard also drops the cassette port, ships with a serial card (8250 UART) as standard, and uses the same [[IBM Model F (83-key)\|83-key Model F]] keyboard as the 5150.

	== Key Differences from the 5150 ==		== Key Differences from the 5150 ==
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	\| PSU \|\| 63.5 W (Type 1) or 130 W (Type 2) \|\| 130 W standard		\| PSU \|\| 63.5 W (Type 1) or 130 W (Type 2) \|\| 130 W standard
	\|-		\|-
	~~\| On-board RAM \|\| 16-64 KB or 64-256 KB \|\| 64-256 KB (early), 256-640 KB (later)~~		\| Hard disk \|\| Optional, with Type 2 PSU \|\| Standard (10 MB MFM, later 20 MB)
	\|-
	\| Hard disk \|\| Optional, with Type 2 PSU \|\| Standard (10/20 MB ~~MFM~~)
	\|-		\|-
	\| Cassette port \|\| Yes \|\| '''No'''		\| Cassette port \|\| Yes \|\| '''No'''
	\|-
	~~\| BIOS \|\| 04/24/81 to 10/27/82 \|\| 11/08/82, 01/10/86, 05/09/86 revisions~~
	\|-
	~~\| Slot spacing \|\| Wider (~1") \|\| Standard (0.8") — some 5150 cards don't fit~~
	\|}		\|}

	== Architecture ==		== Architecture ==

	The 5160 uses the same support-chip family as the 5150: Intel 8088 CPU, optional 8087 FPU, 8259A interrupt controller, 8237A-5 DMA controller, 8253-5 timer, and 8255A-5 PPI~~. A documented difference is the 5160's BIOS, which has 24 KB instead of 8 KB and replaces some of the 5150's Cassette BASIC ROM space with extended BIOS code~~.		The 5160 uses the same support-chip family as the 5150: Intel 8088 CPU, optional 8087 FPU, 8259A interrupt controller, 8237A-5 DMA controller, 8253-5 timer, and 8255A-5 PPI.

	== General Maintenance, Troubleshooting and Capacitor Replacement ==		== General Maintenance, Troubleshooting and Capacitor Replacement ==

	The 5160 shares most of its maintenance and recap procedure with the [[IBM PC (5150)]]. The ~~dedicated guides are:~~		The 5160 shares most of its maintenance and recap procedure with the [[IBM PC (5150)]]. For the +5 V and +12 V tantalum capacitor positions on the 5160 motherboard see minuszerodegrees.net's documented capacitor lists: on the 5160 motherboard, 13 of 16 tantalum capacitors sit on the +5 V line, while C56 (a tantalum) is the +12 V filter for the expansion slots and is well-known for going short-circuit. The 5160 will operate without C56.

	* [[IBM PC XT (5160) Maintenance Guide]]		== References ==
	* [[IBM PC XT (5160) Troubleshooting Guide]]
	* [[IBM PC XT (5160) Capacitor Replacement Guide]]

	~~For the PSU and motherboard tantalum capacitor positions specifically, see the analogous sections of the~~ [[IBM PC (~~5150~~) ~~Capacitor Replacement Guide~~]] ~~— most positions and values carry over to the XT~~.		* [https://en.wikipedia.org/wiki/IBM_Personal_Computer_XT IBM Personal Computer XT — Wikipedia].
			* [https://www.dosdays.co.uk/computers/IBM%20PC-XT%20(5160)/ibm5160.php IBM PC-XT (1983) — DOS Days].
			* [https://minuszerodegrees.net/5150_5160/MDC/tantalum_short_plus_12volts.htm 5160 +12 V tantalum (C56) reference], minuszerodegrees.net.

	== Related Pages ==		== Related Pages ==

	* [[IBM PC (5150)]] — predecessor~~, very closely related architecture~~		* [[IBM PC (5150)]] — predecessor
	* [[IBM PC AT (5170)]] — successor (80286-based)
	* [[IBM Fixed Disk Adapter]]		* [[IBM Fixed Disk Adapter]]
	* [[IBM Model F (83-key)]]		* [[IBM Model F (83-key)]]

Josh: Create supporting page for the IBM PC (5150) article series

2026-05-21T09:03:42Z

Create supporting page for the IBM PC (5150) article series

New page

{{Infobox computer
| name = IBM Personal Computer XT
| image = [[File:IBM 5160 PC XT placeholder.png|260px]]
| caption = IBM Personal Computer XT (5160) with monitor and Model F keyboard
| logo = [[File:IBM logo.svg|110px]]
| developer = IBM Entry Systems Division, Boca Raton
| manufacturer = IBM
| type = Desktop personal computer
| release date = March 8, 1983
| discontinued = April 1987
| price = US$4,995 (1983, with 10 MB HDD); US$7,545 (configured)
| cpu = Intel 8088 @ 4.77 MHz<br/>Optional Intel 8087 FPU
| memory = 128 KB - 256 KB on-board; expandable to 640 KB via ISA cards
| storage = One 360 KB 5.25" floppy + one 10 MB MFM hard disk (standard); 20 MB option from 1985
| display = MDA + [[IBM 5151]] or CGA + [[IBM 5153]] (separate adapter card)
| sound = Internal PC speaker via Intel 8253-5
| dimensions = 19.6" W × 16" D × 5.5" H (498 × 406 × 140 mm)
| weight = ~14 kg (32 lb) with HDD
| os = IBM PC DOS 2.0 onwards; XENIX 86; CP/M-86
| predecessor = [[IBM PC (5150)]]
| successor = [[IBM PC AT (5170)]]
| codename = Project Chess (continuation)
| model = 5160
}}

The '''IBM Personal Computer XT''' (model '''5160''', "eXtended Technology") is the second-generation IBM PC, announced March 8, 1983 and shipped until April 1987. It uses the same Intel 8088 at 4.77 MHz as the [[IBM PC (5150)|5150]] and is software-compatible with it, but adds three things the 5150 lacked at launch:

* '''Built-in hard disk support''' — every XT shipped with a 10 MB MFM hard disk (later 20 MB), driven by the [[IBM Fixed Disk Adapter]] card.
* '''A 130 W power supply''' — sufficient to run the hard disk.
* '''Eight ISA slots''' instead of the 5150's five, on a redesigned motherboard.

The XT motherboard also drops the cassette port (no Type 1 PSU and no cassette I/O circuit), supports up to 256 KB of on-board RAM in standard configuration (and 640 KB on later boards), and uses the same [[IBM Model F (83-key)|83-key Model F]] keyboard as the 5150.

== Key Differences from the 5150 ==

<templatestyles src="Template:StyledTable/styles.css" />
{| class="wikitable styled-table" style="width:100%; text-align:center;"
|+'''IBM 5150 vs. 5160'''
! Feature !! 5150 !! 5160 (XT)
|-
| Year || 1981 || 1983
|-
| ISA slots || 5 || 8
|-
| PSU || 63.5 W (Type 1) or 130 W (Type 2) || 130 W standard
|-
| On-board RAM || 16-64 KB or 64-256 KB || 64-256 KB (early), 256-640 KB (later)
|-
| Hard disk || Optional, with Type 2 PSU || Standard (10/20 MB MFM)
|-
| Cassette port || Yes || '''No'''
|-
| BIOS || 04/24/81 to 10/27/82 || 11/08/82, 01/10/86, 05/09/86 revisions
|-
| Slot spacing || Wider (~1") || Standard (0.8") — some 5150 cards don't fit
|}

== Architecture ==

The 5160 uses the same support-chip family as the 5150: Intel 8088 CPU, optional 8087 FPU, 8259A interrupt controller, 8237A-5 DMA controller, 8253-5 timer, and 8255A-5 PPI. A documented difference is the 5160's BIOS, which has 24 KB instead of 8 KB and replaces some of the 5150's Cassette BASIC ROM space with extended BIOS code.

== General Maintenance, Troubleshooting and Capacitor Replacement ==

The 5160 shares most of its maintenance and recap procedure with the [[IBM PC (5150)]]. The dedicated guides are:

* [[IBM PC XT (5160) Maintenance Guide]]
* [[IBM PC XT (5160) Troubleshooting Guide]]
* [[IBM PC XT (5160) Capacitor Replacement Guide]]

For the PSU and motherboard tantalum capacitor positions specifically, see the analogous sections of the [[IBM PC (5150) Capacitor Replacement Guide]] — most positions and values carry over to the XT.

== Related Pages ==

* [[IBM PC (5150)]] — predecessor, very closely related architecture
* [[IBM PC AT (5170)]] — successor (80286-based)
* [[IBM Fixed Disk Adapter]]
* [[IBM Model F (83-key)]]

{{Navbox-IBMComputers|state=expanded}}

[[Category:IBM]]