Talk:Interface Message Processor - Revision history

Jnc: /* RT IMPs */ typo

2020-11-26T09:18:01Z

RT IMPs: typo

← Older revision		Revision as of 09:18, 26 November 2020
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	::: Actually, the packets passed from host to host via IMPs were called 'message's; those could be broken up into multiple smaller 'packet's by the IMP, but were re-assembled into the original message before being delivered to the destination host. 'Message's were packets, in the generic meaning of that term, but in the ARPANET world, 'packet' referred exclusively to the fragments sent between IMPs.		::: Actually, the packets passed from host to host via IMPs were called 'message's; those could be broken up into multiple smaller 'packet's by the IMP, but were re-assembled into the original message before being delivered to the destination host. 'Message's were packets, in the generic meaning of that term, but in the ARPANET world, 'packet' referred exclusively to the fragments sent between IMPs.
	::: IMPs didn't know anything about IP (it's not clear if that "IMPs forwarded IP packets" meant that, I cheerfully admit). IP packets sent over the ARPANET were wrapped in [[Host-to-IMP Protocol]], which the IMPs understood, but the IP packets inside were just a pile of bits to the IMP. TACs (the later evolution of the original TIPs of the ARPANET) did understand IP, but there were pure hosts, unlike TIPs, which also functioned as IMPs. (Physical ~~TUPs~~ were converted to TACs, if this whole deal isn't already confusing enough; see [https://apps.dtic.mil/dtic/tr/fulltext/u2/a085459.pdf here] for details.) [[User:Jnc\|Jnc]] ([[User talk:Jnc\|talk]]) 03:03, 26 November 2020 (CET)		::: IMPs didn't know anything about IP (it's not clear if that "IMPs forwarded IP packets" meant that, I cheerfully admit). IP packets sent over the ARPANET were wrapped in [[Host-to-IMP Protocol]], which the IMPs understood, but the IP packets inside were just a pile of bits to the IMP. TACs (the later evolution of the original TIPs of the ARPANET) did understand IP, but there were pure hosts, unlike TIPs, which also functioned as IMPs. (Physical TIPs were converted to TACs, if this whole deal isn't already confusing enough; see [https://apps.dtic.mil/dtic/tr/fulltext/u2/a085459.pdf here] for details.) [[User:Jnc\|Jnc]] ([[User talk:Jnc\|talk]]) 03:03, 26 November 2020 (CET)

	:*I started working on the Internet in 1982, several years before the NSFNet came along in 1988, and I was hardly there at the beginning. In fact, I figure I was about the third generation working on the Internet. In other words, the NSFNet was not in any way the forerunner of the Internet. The NSFNet was a transition away from the ARPANet being the backbone of the Internet and it soon gave way to the commercial Internet backbone that grew up in the 90s.		:*I started working on the Internet in 1982, several years before the NSFNet came along in 1988, and I was hardly there at the beginning. In fact, I figure I was about the third generation working on the Internet. In other words, the NSFNet was not in any way the forerunner of the Internet. The NSFNet was a transition away from the ARPANet being the backbone of the Internet and it soon gave way to the commercial Internet backbone that grew up in the 90s.

	: [[User:Dab\|Dab]] ([[User talk:Dab\|talk]]) 21:48, 25 July 2020 (CEST)		: [[User:Dab\|Dab]] ([[User talk:Dab\|talk]]) 21:48, 25 July 2020 (CEST)

Jnc: fix fmt

2020-11-26T02:05:02Z

fix fmt

← Older revision		Revision as of 02:05, 26 November 2020
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	:*IMPs first appeared in 1969 and the IBM RT came out in 1986 so IMPs predated RTs by some 17 years. While it's possible that there were some later IMPs that used RTs, I'm highly doubtful. I only used computers connected to IMPs and ported an IMP driver from the PDP-11 to the microVAX so I didn't use all possible IMPs, but by the time the IBM RT came along that style of building computer networks had long passed. We were now using local-area networks and point-to-point links with routers (and were just making the change from calling them gateways to calling them routers).		:*IMPs first appeared in 1969 and the IBM RT came out in 1986 so IMPs predated RTs by some 17 years. While it's possible that there were some later IMPs that used RTs, I'm highly doubtful. I only used computers connected to IMPs and ported an IMP driver from the PDP-11 to the microVAX so I didn't use all possible IMPs, but by the time the IBM RT came along that style of building computer networks had long passed. We were now using local-area networks and point-to-point links with routers (and were just making the change from calling them gateways to calling them routers).

	:: No, RT's were never IMPs, although they were routers in the IBM/UMich NSFNet. [[User:Jnc\|Jnc]] ([[User talk:Jnc\|talk]]) 03:03, 26 November 2020 (CET)		::: No, RT's were never IMPs, although they were routers in the IBM/UMich NSFNet. [[User:Jnc\|Jnc]] ([[User talk:Jnc\|talk]]) 03:03, 26 November 2020 (CET)

	:*I don't know about IMP being a misnomer but that is what they were called. Yes, they passed computer message packets (usually just called packets) and some of those packets were Internet Protocol packets but saying that the packets they passed later became part of IP is a very strange way to look at it. That's just not how it worked. The IP protocol was defined, it was implemented in IMPs (and other places), and then IMPs forwarded IP packets as well as all the other stuff they did (NCP and routing packets and I don't know what all else).		:*I don't know about IMP being a misnomer but that is what they were called. Yes, they passed computer message packets (usually just called packets) and some of those packets were Internet Protocol packets but saying that the packets they passed later became part of IP is a very strange way to look at it. That's just not how it worked. The IP protocol was defined, it was implemented in IMPs (and other places), and then IMPs forwarded IP packets as well as all the other stuff they did (NCP and routing packets and I don't know what all else).

	:: Actually, the packets passed from host to host via IMPs were called 'message's; those could be broken up into multiple smaller 'packet's by the IMP, but were re-assembled into the original message before being delivered to the destination host. 'Message's were packets, in the generic meaning of that term, but in the ARPANET world, 'packet' referred exclusively to the fragments sent between IMPs.		::: Actually, the packets passed from host to host via IMPs were called 'message's; those could be broken up into multiple smaller 'packet's by the IMP, but were re-assembled into the original message before being delivered to the destination host. 'Message's were packets, in the generic meaning of that term, but in the ARPANET world, 'packet' referred exclusively to the fragments sent between IMPs.
	:: IMPs didn't know anything about IP (it's not clear if that "IMPs forwarded IP packets" meant that, I cheerfully admit). IP packets sent over the ARPANET were wrapped in [[Host-to-IMP Protocol]], which the IMPs understood, but the IP packets inside were just a pile of bits to the IMP. TACs (the later evolution of the original TIPs of the ARPANET) did understand IP, but there were pure hosts, unlike TIPs, which also functioned as IMPs. (Physical TUPs were converted to TACs, if this whole deal isn't already confusing enough; see [https://apps.dtic.mil/dtic/tr/fulltext/u2/a085459.pdf here] for details.) [[User:Jnc\|Jnc]] ([[User talk:Jnc\|talk]]) 03:03, 26 November 2020 (CET)		::: IMPs didn't know anything about IP (it's not clear if that "IMPs forwarded IP packets" meant that, I cheerfully admit). IP packets sent over the ARPANET were wrapped in [[Host-to-IMP Protocol]], which the IMPs understood, but the IP packets inside were just a pile of bits to the IMP. TACs (the later evolution of the original TIPs of the ARPANET) did understand IP, but there were pure hosts, unlike TIPs, which also functioned as IMPs. (Physical TUPs were converted to TACs, if this whole deal isn't already confusing enough; see [https://apps.dtic.mil/dtic/tr/fulltext/u2/a085459.pdf here] for details.) [[User:Jnc\|Jnc]] ([[User talk:Jnc\|talk]]) 03:03, 26 November 2020 (CET)

	:*I started working on the Internet in 1982, several years before the NSFNet came along in 1988, and I was hardly there at the beginning. In fact, I figure I was about the third generation working on the Internet. In other words, the NSFNet was not in any way the forerunner of the Internet. The NSFNet was a transition away from the ARPANet being the backbone of the Internet and it soon gave way to the commercial Internet backbone that grew up in the 90s.		:*I started working on the Internet in 1982, several years before the NSFNet came along in 1988, and I was hardly there at the beginning. In fact, I figure I was about the third generation working on the Internet. In other words, the NSFNet was not in any way the forerunner of the Internet. The NSFNet was a transition away from the ARPANet being the backbone of the Internet and it soon gave way to the commercial Internet backbone that grew up in the 90s.

	: [[User:Dab\|Dab]] ([[User talk:Dab\|talk]]) 21:48, 25 July 2020 (CEST)		: [[User:Dab\|Dab]] ([[User talk:Dab\|talk]]) 21:48, 25 July 2020 (CEST)

Jnc: /* RT IMPs */ Expand/clarify on a few points

2020-11-26T02:03:53Z

RT IMPs: Expand/clarify on a few points

← Older revision		Revision as of 02:03, 26 November 2020
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	:*IMPs first appeared in 1969 and the IBM RT came out in 1986 so IMPs predated RTs by some 17 years. While it's possible that there were some later IMPs that used RTs, I'm highly doubtful. I only used computers connected to IMPs and ported an IMP driver from the PDP-11 to the microVAX so I didn't use all possible IMPs, but by the time the IBM RT came along that style of building computer networks had long passed. We were now using local-area networks and point-to-point links with routers (and were just making the change from calling them gateways to calling them routers).		:*IMPs first appeared in 1969 and the IBM RT came out in 1986 so IMPs predated RTs by some 17 years. While it's possible that there were some later IMPs that used RTs, I'm highly doubtful. I only used computers connected to IMPs and ported an IMP driver from the PDP-11 to the microVAX so I didn't use all possible IMPs, but by the time the IBM RT came along that style of building computer networks had long passed. We were now using local-area networks and point-to-point links with routers (and were just making the change from calling them gateways to calling them routers).

			:: No, RT's were never IMPs, although they were routers in the IBM/UMich NSFNet. [[User:Jnc\|Jnc]] ([[User talk:Jnc\|talk]]) 03:03, 26 November 2020 (CET)

	:*I don't know about IMP being a misnomer but that is what they were called. Yes, they passed computer message packets (usually just called packets) and some of those packets were Internet Protocol packets but saying that the packets they passed later became part of IP is a very strange way to look at it. That's just not how it worked. The IP protocol was defined, it was implemented in IMPs (and other places), and then IMPs forwarded IP packets as well as all the other stuff they did (NCP and routing packets and I don't know what all else).		:*I don't know about IMP being a misnomer but that is what they were called. Yes, they passed computer message packets (usually just called packets) and some of those packets were Internet Protocol packets but saying that the packets they passed later became part of IP is a very strange way to look at it. That's just not how it worked. The IP protocol was defined, it was implemented in IMPs (and other places), and then IMPs forwarded IP packets as well as all the other stuff they did (NCP and routing packets and I don't know what all else).

	:*I started working on the Internet in 1982, several years before the NSFNet came along in 1988, and I was hardly there at the beginning. In fact, I figure I was about the third generation working on the Internet. In other words, the NSFNet was not in any way the forerunner of the Internet. The NSFNet was a transition away from the ARPANet being the backbone of the Internet and it soon gave way to the commercial Internet backbone that grew up in the 90s.		:: Actually, the packets passed from host to host via IMPs were called 'message's; those could be broken up into multiple smaller 'packet's by the IMP, but were re-assembled into the original message before being delivered to the destination host. 'Message's were packets, in the generic meaning of that term, but in the ARPANET world, 'packet' referred exclusively to the fragments sent between IMPs.
			:: IMPs didn't know anything about IP (it's not clear if that "IMPs forwarded IP packets" meant that, I cheerfully admit). IP packets sent over the ARPANET were wrapped in [[Host-to-IMP Protocol]], which the IMPs understood, but the IP packets inside were just a pile of bits to the IMP. TACs (the later evolution of the original TIPs of the ARPANET) did understand IP, but there were pure hosts, unlike TIPs, which also functioned as IMPs. (Physical TUPs were converted to TACs, if this whole deal isn't already confusing enough; see [https://apps.dtic.mil/dtic/tr/fulltext/u2/a085459.pdf here] for details.) [[User:Jnc\|Jnc]] ([[User talk:Jnc\|talk]]) 03:03, 26 November 2020 (CET)

			:*I started working on the Internet in 1982, several years before the NSFNet came along in 1988, and I was hardly there at the beginning. In fact, I figure I was about the third generation working on the Internet. In other words, the NSFNet was not in any way the forerunner of the Internet. The NSFNet was a transition away from the ARPANet being the backbone of the Internet and it soon gave way to the commercial Internet backbone that grew up in the 90s.

	: [[User:Dab\|Dab]] ([[User talk:Dab\|talk]]) 21:48, 25 July 2020 (CEST)		: [[User:Dab\|Dab]] ([[User talk:Dab\|talk]]) 21:48, 25 July 2020 (CEST)

Jnc: fmt RT stuff into its own section

2020-11-26T01:31:25Z

fmt RT stuff into its own section

← Older revision		Revision as of 01:31, 26 November 2020
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	: Eh, no biggie. It's not that clear, so I'll add a bit of detail. [[User:Jnc\|Jnc]] ([[User talk:Jnc\|talk]]) 16:06, 16 March 2018 (CET)		: Eh, no biggie. It's not that clear, so I'll add a bit of detail. [[User:Jnc\|Jnc]] ([[User talk:Jnc\|talk]]) 16:06, 16 March 2018 (CET)

	: I was under the impression that IBM RTs ( weird old RISC ) served as a IMP*, but apparently they predated IMPs,		==RT IMPs==
			I was under the impression that IBM RTs ( weird old RISC ) served as a IMP*, but apparently they predated IMPs,

	:*IMP is a misnomer, They were passing computer to computer message packets, which would later become part of IP, Internet Proticall		: *IMP is a misnomer, They were passing computer to computer message packets, which would later become part of IP, Internet Proticall

	<blockquote>"The National Science Foundation Network (NSFNET) was the forerunner of the Internet. From July 1988 to November 1992, the NSFNET's T1 backbone network used routers built from multiple RT PCs (typically nine) interconnect by a Token Ring LAN."</blockquote> ~~[[User:ForOldHack\|ForOldHack]] ([[User talk:ForOldHack\|talk]]) 09:53, 5 July 2020 (CEST)~~		<blockquote>"The National Science Foundation Network (NSFNET) was the forerunner of the Internet. From July 1988 to November 1992, the NSFNET's T1 backbone network used routers built from multiple RT PCs (typically nine) interconnect by a Token Ring LAN."</blockquote>

	:: ~~A few points on what~~ ForOldHack ~~wrote here~~:		[[User:ForOldHack\|ForOldHack]] ([[User talk:ForOldHack\|talk]]) 09:53, 5 July 2020 (CEST)

	:::*IMPs first appeared in 1969 and the IBM RT came out in 1986 so IMPs predated RTs by some 17 years. While it's possible that there were some later IMPs that used RTs, I'm highly doubtful. I only used computers connected to IMPs and ported an IMP driver from the PDP-11 to the microVAX so I didn't use all possible IMPs, but by the time the IBM RT came along that style of building computer networks had long passed. We were now using local-area networks and point-to-point links with routers (and were just making the change from calling them gateways to calling them routers).		: A few points on what ForOldHack wrote here:

	:::*~~I don~~'~~t know about IMP being a misnomer but~~ that ~~is what they~~ were ~~called. Yes, they passed computer message packets (usually just called packets) and~~ some ~~of those packets were Internet Protocol packets but saying~~ that ~~the packets they passed later became part of IP is a very strange way to look at it. That~~'~~s just not how it worked~~. ~~The IP protocol was defined, it was implemented in~~ IMPs (and ~~other places), and then IMPs forwarded IP packets as well as all~~ the ~~other stuff they did (NCP and routing packets and~~ I ~~don~~'t ~~know what~~ all ~~else~~).		:*IMPs first appeared in 1969 and the IBM RT came out in 1986 so IMPs predated RTs by some 17 years. While it's possible that there were some later IMPs that used RTs, I'm highly doubtful. I only used computers connected to IMPs and ported an IMP driver from the PDP-11 to the microVAX so I didn't use all possible IMPs, but by the time the IBM RT came along that style of building computer networks had long passed. We were now using local-area networks and point-to-point links with routers (and were just making the change from calling them gateways to calling them routers).

	:::*I ~~started working on the Internet in 1982, several years before the NSFNet came along in 1988, and I was hardly there at the beginning~~. ~~In fact~~, ~~I figure I was about~~ the ~~third generation working on the Internet~~. ~~In other words, the NSFNet was~~ not ~~in any way the forerunner of the Internet~~. The ~~NSFNet~~ was ~~a transition away from the ARPANet being the backbone of the Internet and~~ it ~~soon gave way to the commercial Internet backbone that grew up~~ in the ~~90s~~.		:*I don't know about IMP being a misnomer but that is what they were called. Yes, they passed computer message packets (usually just called packets) and some of those packets were Internet Protocol packets but saying that the packets they passed later became part of IP is a very strange way to look at it. That's just not how it worked. The IP protocol was defined, it was implemented in IMPs (and other places), and then IMPs forwarded IP packets as well as all the other stuff they did (NCP and routing packets and I don't know what all else).

	::: [[User:Dab\|Dab]] ([[User talk:Dab\|talk]]) 21:48, 25 July 2020 (CEST)		:*I started working on the Internet in 1982, several years before the NSFNet came along in 1988, and I was hardly there at the beginning. In fact, I figure I was about the third generation working on the Internet. In other words, the NSFNet was not in any way the forerunner of the Internet. The NSFNet was a transition away from the ARPANet being the backbone of the Internet and it soon gave way to the commercial Internet backbone that grew up in the 90s.

			: [[User:Dab\|Dab]] ([[User talk:Dab\|talk]]) 21:48, 25 July 2020 (CEST)

Dab: /* IMP varieties */

2020-07-25T19:52:09Z

IMP varieties

← Older revision		Revision as of 19:52, 25 July 2020
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	<blockquote>"The National Science Foundation Network (NSFNET) was the forerunner of the Internet. From July 1988 to November 1992, the NSFNET's T1 backbone network used routers built from multiple RT PCs (typically nine) interconnect by a Token Ring LAN."</blockquote> [[User:ForOldHack\|ForOldHack]] ([[User talk:ForOldHack\|talk]]) 09:53, 5 July 2020 (CEST)		<blockquote>"The National Science Foundation Network (NSFNET) was the forerunner of the Internet. From July 1988 to November 1992, the NSFNET's T1 backbone network used routers built from multiple RT PCs (typically nine) interconnect by a Token Ring LAN."</blockquote> [[User:ForOldHack\|ForOldHack]] ([[User talk:ForOldHack\|talk]]) 09:53, 5 July 2020 (CEST)

			:: A few points on what ForOldHack wrote here:

			:::*IMPs first appeared in 1969 and the IBM RT came out in 1986 so IMPs predated RTs by some 17 years. While it's possible that there were some later IMPs that used RTs, I'm highly doubtful. I only used computers connected to IMPs and ported an IMP driver from the PDP-11 to the microVAX so I didn't use all possible IMPs, but by the time the IBM RT came along that style of building computer networks had long passed. We were now using local-area networks and point-to-point links with routers (and were just making the change from calling them gateways to calling them routers).

			:::*I don't know about IMP being a misnomer but that is what they were called. Yes, they passed computer message packets (usually just called packets) and some of those packets were Internet Protocol packets but saying that the packets they passed later became part of IP is a very strange way to look at it. That's just not how it worked. The IP protocol was defined, it was implemented in IMPs (and other places), and then IMPs forwarded IP packets as well as all the other stuff they did (NCP and routing packets and I don't know what all else).

			:::*I started working on the Internet in 1982, several years before the NSFNet came along in 1988, and I was hardly there at the beginning. In fact, I figure I was about the third generation working on the Internet. In other words, the NSFNet was not in any way the forerunner of the Internet. The NSFNet was a transition away from the ARPANet being the backbone of the Internet and it soon gave way to the commercial Internet backbone that grew up in the 90s.

			::: [[User:Dab\|Dab]] ([[User talk:Dab\|talk]]) 21:48, 25 July 2020 (CEST)

ForOldHack: /* IMP varieties */

2020-07-17T01:45:49Z

IMP varieties

← Older revision		Revision as of 01:45, 17 July 2020
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	: Eh, no biggie. It's not that clear, so I'll add a bit of detail. [[User:Jnc\|Jnc]] ([[User talk:Jnc\|talk]]) 16:06, 16 March 2018 (CET)		: Eh, no biggie. It's not that clear, so I'll add a bit of detail. [[User:Jnc\|Jnc]] ([[User talk:Jnc\|talk]]) 16:06, 16 March 2018 (CET)

	: I was under the impression that IBM RTs ( weird old RISC ) served as a ~~IMB~~, but apparently they predated IMPs,		: I was under the impression that IBM RTs ( weird old RISC ) served as a IMP*, but apparently they predated IMPs,

			:*IMP is a misnomer, They were passing computer to computer message packets, which would later become part of IP, Internet Proticall

	<blockquote>"The National Science Foundation Network (NSFNET) was the forerunner of the Internet. From July 1988 to November 1992, the NSFNET's T1 backbone network used routers built from multiple RT PCs (typically nine) interconnect by a Token Ring LAN."</blockquote> [[User:ForOldHack\|ForOldHack]] ([[User talk:ForOldHack\|talk]]) 09:53, 5 July 2020 (CEST)		<blockquote>"The National Science Foundation Network (NSFNET) was the forerunner of the Internet. From July 1988 to November 1992, the NSFNET's T1 backbone network used routers built from multiple RT PCs (typically nine) interconnect by a Token Ring LAN."</blockquote> [[User:ForOldHack\|ForOldHack]] ([[User talk:ForOldHack\|talk]]) 09:53, 5 July 2020 (CEST)

ForOldHack: /* IMP varieties */ IMB RT?

2020-07-05T07:53:32Z

IMP varieties: IMB RT?

← Older revision		Revision as of 07:53, 5 July 2020
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	: Eh, no biggie. It's not that clear, so I'll add a bit of detail. [[User:Jnc\|Jnc]] ([[User talk:Jnc\|talk]]) 16:06, 16 March 2018 (CET)		: Eh, no biggie. It's not that clear, so I'll add a bit of detail. [[User:Jnc\|Jnc]] ([[User talk:Jnc\|talk]]) 16:06, 16 March 2018 (CET)

			: I was under the impression that IBM RTs ( weird old RISC ) served as a IMB, but apparently they predated IMPs,

			<blockquote>"The National Science Foundation Network (NSFNET) was the forerunner of the Internet. From July 1988 to November 1992, the NSFNET's T1 backbone network used routers built from multiple RT PCs (typically nine) interconnect by a Token Ring LAN."</blockquote> [[User:ForOldHack\|ForOldHack]] ([[User talk:ForOldHack\|talk]]) 09:53, 5 July 2020 (CEST)

Jnc: I'll add some detail as it's not clear

2018-03-16T15:06:21Z

I'll add some detail as it's not clear

← Older revision		Revision as of 15:06, 16 March 2018
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	: Huh? "Later, other similar minicomputers were also used." [[User:Jnc\|Jnc]] ([[User talk:Jnc\|talk]]) 15:24, 16 March 2018 (CET)		: Huh? "Later, other similar minicomputers were also used." [[User:Jnc\|Jnc]] ([[User talk:Jnc\|talk]]) 15:24, 16 March 2018 (CET)

	:: Sorry, I missed that!		:: Sorry, I missed that! [[User:Larsbrinkhoff\|Larsbrinkhoff]] ([[User talk:Larsbrinkhoff\|talk]]) 15:57 16 March 2018 (CET)

			: Eh, no biggie. It's not that clear, so I'll add a bit of detail. [[User:Jnc\|Jnc]] ([[User talk:Jnc\|talk]]) 16:06, 16 March 2018 (CET)

Larsbrinkhoff: Sorry!

2018-03-16T14:57:12Z

Sorry!

← Older revision		Revision as of 14:57, 16 March 2018
Line 8:		Line 8:

	: Huh? "Later, other similar minicomputers were also used." [[User:Jnc\|Jnc]] ([[User talk:Jnc\|talk]]) 15:24, 16 March 2018 (CET)		: Huh? "Later, other similar minicomputers were also used." [[User:Jnc\|Jnc]] ([[User talk:Jnc\|talk]]) 15:24, 16 March 2018 (CET)

			:: Sorry, I missed that!

Jnc: /* IMP varieties */ Huh?

2018-03-16T14:24:46Z

IMP varieties: Huh?

← Older revision		Revision as of 14:24, 16 March 2018
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	:: Not necessarily. It's just that current text makes it sound like the 516 IMP was the only model. [[User:Larsbrinkhoff\|Larsbrinkhoff]] ([[User talk:Larsbrinkhoff\|talk]]) 14:52, 16 March 2018 (CET)		:: Not necessarily. It's just that current text makes it sound like the 516 IMP was the only model. [[User:Larsbrinkhoff\|Larsbrinkhoff]] ([[User talk:Larsbrinkhoff\|talk]]) 14:52, 16 March 2018 (CET)

			: Huh? "Later, other similar minicomputers were also used." [[User:Jnc\|Jnc]] ([[User talk:Jnc\|talk]]) 15:24, 16 March 2018 (CET)