PDP-11/23-PLUS: Difference between revisions
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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. | ||
| Line 19: | Line 19: | ||
* 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 16:56, 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
