Difference between revisions of "PDP-11/23-PLUS"
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| − | {{Infobox Machine| | + | {{Infobox Machine | |
| − | name=PDP-11/23-PLUS | | + | name = PDP-11/23-PLUS | |
| − | image=PDP1123PLUS-01.jpeg | | + | image = PDP1123PLUS-01.jpeg | |
| − | caption=PDP-11/23-PLUS housed in a BA11-M with two [[RL02]]s, [[TK50]], and third party [[SCSI]] drive| | + | imgwidth = 150px | |
| − | manufacturer=[[Digital Equipment Corporation]] | | + | caption = PDP-11/23-PLUS housed in a BA11-M with two [[RL02]]s, [[TK50]], and third party [[SCSI]] drive | |
| − | word size= 16 bit | | + | manufacturer = [[Digital Equipment Corporation]] | |
| − | virtual address= 16 bit | | + | word size = 16 bit | |
| − | physical address= 22 bit | | + | virtual address = 16 bit | |
| − | bus arch= [[QBUS]] | | + | physical address = 22 bit | |
| − | year introduced = November 1981 | + | bus arch = [[QBUS]] | |
| − | + | year introduced = November 1981 | | |
| − | + | }} | |
The '''PDP-11/23-PLUS''', introduced in November 1981, introduced an integrated solution on a single [[DEC card form factor |quad]]-width [[QBUS]] board, which included [[F-11 chip set|F-11]] [[Central Processing Unit|CPU]], [[memory management]] unit, a socket for inserting an [[KEF11-A floating point chip|KEF11-A]] [[floating point processor|floating point unit]], and two [[asynchronous serial line]]s, which had a maximum speed of 19,200 baud. | The '''PDP-11/23-PLUS''', introduced in November 1981, introduced an integrated solution on a single [[DEC card form factor |quad]]-width [[QBUS]] board, which included [[F-11 chip set|F-11]] [[Central Processing Unit|CPU]], [[memory management]] unit, a socket for inserting an [[KEF11-A floating point chip|KEF11-A]] [[floating point processor|floating point unit]], and two [[asynchronous serial line]]s, which had a maximum speed of 19,200 baud. | ||
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* M8189 [[KDF11-B CPU]] board | * M8189 [[KDF11-B CPU]] board | ||
* 22-bit QBUS [[backplane]] | * 22-bit QBUS [[backplane]] | ||
| + | |||
| + | {{semi-stub}} | ||
==External links== | ==External links== | ||
Revision as of 17:56, 8 February 2024
| PDP-11/23-PLUS | |
 PDP-11/23-PLUS housed in a BA11-M with two RL02s, TK50, and third party SCSI drive | |
| Manufacturer: | Digital Equipment Corporation |
|---|---|
| Year Introduced: | November 1981 |
| Word Size: | 16 bit |
| Physical Address Size: | 22 bit |
| Virtual Address Size: | 16 bit |
| Bus Architecture: | QBUS |
The PDP-11/23-PLUS, introduced in November 1981, introduced an integrated solution on a single quad-width QBUS board, which included F-11 CPU, memory management unit, a socket for inserting an KEF11-A floating point unit, and two asynchronous serial lines, which had a maximum speed of 19,200 baud.
The PDP-11/23-PLUS was initially available in a BA11-M mounting box, later on it was sold as the MicroPDP-11 in a BA23 Enclosure.
Essential parts that make up a PDP 11/23-PLUS
- M8189 KDF11-B CPU board
- 22-bit QBUS backplane
