PDP-11/84
From Computer History Wiki
83's and 84's are basically the same thing....?
hampage.hu
Quoting: Introduced in 1988. Based on the J-11 chip, DEC originally wanted the clock speed to be 20MHz, but it couldn't be done on time, so the actual speed was 18MHz. It was the fastest CPU of the PDP-11's anyhow. The high-end configuration had 4MB RAM on PMI (Private Memory Interconnect) and a floating-point accelerator.
The UNIBUS-based PDP-11/84 was for those customers, who wanted more I/O throughput or had some legacy equipment: it was the same (qbus) CPU board with a KTJ-11B UNIBUS adapter.
The box on the picture to the left is a BA123 which was a popular enclosure for qbus machines. Apart from the 12x4-slot qbus backplane, it had five slots for storage units, e.g. room for two or three harddisks, a tape drive (TK50 here) and floppy.
Gallery
| v • d • ePDP-11 Computers and Peripherals |
|---|
| Unibus PDP-11s - PDP-11/20 • PDP-11/15 • PDP-11/35 • PDP-11/40 • PDP-11/45 • PDP-11/50 • PDP-11/55 • PDP-11/70 • PDP-11/05 • PDP-11/10 • PDP-11/34 • PDP-11/04 • PDP-11/44 • PDP-11/60 • PDP-11/24 • PDP-11/84 • PDP-11/94
Qbus PDP-11s - PDP-11/03 • PDP-11/23 • PDP-11/23+ • MicroPDP-11/73 • MicroPDP-11/53 • MicroPDP-11/83 • MicroPDP-11/93 Clones: CM 1420 Also: PDP-11 architecture • Qbus • Unibus • List of DEC board part numbers |
