IBM AT - Revision history

Jnc: rm dup link

2018-10-19T22:41:00Z

rm dup link

Jnc: Avoid dab page

2018-10-19T22:34:01Z

Avoid dab page

Jnc: Jnc moved page IBM 5170 to IBM AT over redirect: Better known this way

2018-10-19T11:45:37Z

Jnc moved page IBM 5170 to IBM AT over redirect: Better known this way

Jnc: Update cat

2018-10-19T11:42:42Z

Update cat

Jnc: avoid redir

2018-06-12T03:42:56Z

avoid redir

Jnc: +cat

2018-06-12T03:17:41Z

+cat

Tor: Mhz->MHz and other minor fixes

2013-02-25T14:45:28Z

Mhz->MHz and other minor fixes

Neozeed at 15:57, 14 April 2011

2011-04-14T15:57:29Z

Neozeed at 20:22, 31 January 2011

2011-01-31T20:22:41Z

Neozeed at 16:56, 7 August 2010

2010-08-07T16:56:45Z

@@ Line 16: / Line 16: @@
 [[Image:IBM 5170 motherboard.jpg|thumb|right|250px|IBM AT Motherboard]]
-The IBM AT unlike the [[IBM XT]] is fully 16 bit, with a 16-bit [[data bus]], 24-bit [[address bus]], and 16-bit [[ISA]] expansion bus.  IBM had also promised along with the AT that it would support the next generation of [[operating system]]s, [[OS/2]].  The AT was also able to run [[Xenix]], along with a special [[protected mode]] version of Xenix.
+The IBM AT unlike the [[IBM XT]] is fully 16 bit, with a 16-bit [[data bus]], 24-bit [[address bus]], and 16-bit ISA expansion bus.  IBM had also promised along with the AT that it would support the next generation of [[operating system]]s, [[OS/2]].  The AT was also able to run [[Xenix]], along with a special [[protected mode]] version of Xenix.
 All [[BIOS]]'s with computers with a 286 or greater CPU are compatible with the IBM AT.

@@ Line 8: / Line 8: @@
 }}
-The '''IBM AT''', also known as the '''IBM 5170''' was the machine that introduced 16 bit ISA slots, and the 'advanced' [[i286]] [[CPU]]. The 16bit ISA slots added an additional plug on the board for the extra address pins & IRQ pins, while keeping the existing 8 bit ISA slot in place.  Thus the AT could use 8bit cards without modification. The AT also ran its ISA bus at 6MHz, vs the PC/XT's 4.77MHz making the AT all around faster.
+The '''IBM AT''', also known as the '''IBM 5170''' was the machine that introduced 16-[[bit]] [[Industry Standard Architecture|ISA]] slots, and the 'advanced' [[i286]] [[Central Processing Unit|CPU]].
 Until the rise of the [[Pentium II]] CPU, the IBM AT [[motherboard]] was the standard size for clone motherboards with 286 and greater CPUs.
@@ Line 14: / Line 16: @@
 [[Image:IBM 5170 motherboard.jpg|thumb|right|250px|IBM AT Motherboard]]
-The IBM AT unlike the [[IBM XT]] is fully 16 bit, with a 16bit [[memory bus]], 24bit [[address bus]], and 16bit [[ISA]] expansion bus.  IBM had also promised along with the AT that it would support the next generation of [[operating system]]s, [[OS/2]].  The AT was also able to run [[Xenix]], along with a special [[protected mode]] version of Xenix.
+The IBM AT unlike the [[IBM XT]] is fully 16 bit, with a 16-bit [[data bus]], 24-bit [[address bus]], and 16-bit [[ISA]] expansion bus.  IBM had also promised along with the AT that it would support the next generation of [[operating system]]s, [[OS/2]].  The AT was also able to run [[Xenix]], along with a special [[protected mode]] version of Xenix.
 All [[BIOS]]'s with computers with a 286 or greater CPU are compatible with the IBM AT.

@@ Line 8: / Line 8: @@
 }}
-The [[IBM]] AT, also known as the IBM 5170 was the machine that introduced 16 bit ISA slots, and the 'advanced' [[i286]] CPU.  The 16bit ISA slots added an additional plug on the board for the extra address pins & IRQ pins, while keeping the existing 8 bit ISA slot in place.  Thus the AT could use 8bit cards without modification.  The AT also ran its ISA bus at 6MHz, vs the PC/XT's 4.77MHz making the AT all around faster.
+The '''IBM AT''', also known as the '''IBM 5170''' was the machine that introduced 16 bit ISA slots, and the 'advanced' [[i286]] [[CPU]]. The 16bit ISA slots added an additional plug on the board for the extra address pins & IRQ pins, while keeping the existing 8 bit ISA slot in place.  Thus the AT could use 8bit cards without modification. The AT also ran its ISA bus at 6MHz, vs the PC/XT's 4.77MHz making the AT all around faster.
 [[Image:IBM 5170 motherboard.jpg|thumb|right|250px|IBM AT Motherboard]]
-The IBM AT unlike the [[IBM XT]] is fully 16 bit, with a 16bit memory bus, 24bit address bus, and 16bit [[ISA]] expansion bus.  IBM had also promised along with the AT that it would support the next generation of operating systems, [[OS/2]].  The AT was also able to run [[Xenix]], along with a special protected mode version of Xenix.
+The IBM AT unlike the [[IBM XT]] is fully 16 bit, with a 16bit [[memory bus]], 24bit [[address bus]], and 16bit [[ISA]] expansion bus.  IBM had also promised along with the AT that it would support the next generation of [[operating system]]s, [[OS/2]].  The AT was also able to run [[Xenix]], along with a special [[protected mode]] version of Xenix.
-All BIOS's with computers with a 286 or greater CPU are compatible with the IBM AT.
+All [[BIOS]]'s with computers with a 286 or greater CPU are compatible with the IBM AT.
-The IBM AT shipped with a WD-1002 controller, that supported MFM hard disks, but unlike other controllers, the control code was in the IBM AT, and the drive parameter table was burned into the BIOS, and the selection was saved into the non volatile RAM.  The AT also required a special diskette to set up the NVRAM, while clones typically didn't include the ROM BASIC, and instead included a setup & diagnostic program in ROM.
+The IBM AT shipped with a WD-1002 [[controller]], that supported MFM hard [[disk]]s, but unlike other controllers, the control code was in the IBM AT, and the drive parameter table was burned into the BIOS, and the selection was saved into the non volatile RAM.  The AT also required a special diskette to set up the [[NVRAM]], while clones typically didn't include the ROM BASIC, and instead included a setup & diagnostic program in ROM.
-Also in this model, was the introduction of high density diskettes, starting with the 5 1/4" 1.2MB drive.  Many AT specific things shipped on high density disks to prevent PC/XT users from using these programs.  OS/2 was one such program, along with Microsoft C 5.1 where the OS/2 components were on high density disks, while the rest of the compiler was on low density disks.  I don't remember exactly how you got a 3 1/2" disk on an original AT, if it required a ROM update, or a 3rd party controller, or both.
+Also in this model, was the introduction of high density [[diskette]]s, starting with the 5 1/4" 1.2MB drive.  Many AT specific things shipped on high density disks to prevent PC/XT users from using these programs.  OS/2 was one such program, along with Microsoft C 5.1 where the OS/2 components were on high density disks, while the rest of the [[compiler]] was on low density disks.  I don't remember exactly how you got a 3 1/2" disk on an original AT, if it required a [[ROM]] update, or a 3rd party controller, or both.
 The IBM AT was later supplanted by the [[IBM PS/2]] line of computers.
-{{stub}}
+{{semi-stub}}
 [[Category:IBM PCs]]

@@ Line 21: / Line 21: @@
 Also in this model, was the introduction of high density diskettes, starting with the 5 1/4" 1.2MB drive.  Many AT specific things shipped on high density disks to prevent PC/XT users from using these programs.  OS/2 was one such program, along with Microsoft C 5.1 where the OS/2 components were on high density disks, while the rest of the compiler was on low density disks.  I don't remember exactly how you got a 3 1/2" disk on an original AT, if it required a ROM update, or a 3rd party controller, or both.
-The IBM AT was later supplanted by the [[PS/2]] line of computers.
+The IBM AT was later supplanted by the [[IBM PS/2]] line of computers.
 {{stub}}
 [[Category:IBM PCs]]

← Older revision		Revision as of 03:17, 12 June 2018
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	The IBM AT was later supplanted by the [[PS/2]] line of computers.		The IBM AT was later supplanted by the [[PS/2]] line of computers.
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	{{stub}}		{{stub}}
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		+	[[Category:IBM PCs]]

← Older revision	Revision as of 11:45, 19 October 2018
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