The 86A came standard with two interfaces for floppy drives and a parallel (Centronics type) printer interface. The 86 had an output port for composite video. It was commonly connected to the 82912A (9 inch) or (12 inch) monitor. The 86A came standard with 64K RAM. The 86B replaced the 86A in 1983.

The HP-83, HP-85, and HP-86A did not have built-in HP-IB but HP-IB support could be added. (HP-IB was built-in to the HP-86B, HP-87 and 87XM) The HP-86 was available with 64K or 128K of RAM. These models featured a wider CRT that displayed 16 rows of 80-character lines. (Graphics mode was the same with the image centered in the display.)

The HP-86 was a high-end version of the HP-83 and HP-85 computers, offering more main memory, and a larger (external) monitor. This line of computers was intended for technical and scientific applications. My HP-86A comes with a 12" black-and-white monitor, a single 5.25" disk drive, and a dot-matrix printer.

HP 86A/86B/87A/87XM ROM query Message #1 Posted by john on 16 Dec 2005, 5:43 p.m. Hi, Can someone clarify please which ROMs are built into which of the following machines? 86A. 86B. 87A - none (only one of these I have) 87XM. I recall (probably incorrectly!) that some of these have the EDISK ROM built in, not sure of any other ROMs. Thanks, John

Two versions og the HP-86 were successively released: The 86-A had 64 KB of RAM and was fully compatible with the 87-A. It had built-in interfaces for a printer and dual floppy drives. Internally, these interfaces were seen as HP-IB devices. The 86-B had 128 KB of RAM and an HP-IB port instead of the printer/FDD interfaces.

The 86A came standard with two interfaces for 9130 floppy drives and a parallel (Centronics type) printer interface. The 86 had an output port for composite video. It was commonly connected to the 82912A (9 inch) or 82913A (12 inch) monitor.

Model: -86A General: Name: ? Code-Name: Libra Family: ? Logic: ? Features: ? Firsts: ? Introduction: Date: 1982-06-14 Price: $1,795 Discontinuation: Date: 1984-02-01 ...

2017年11月21日 · does anyone have the interface specification or pinout of the disk interface on the HP-86a please ? Note - its not the same as the HP-IB connectors on the 86B - the 86a has Centronics style connectors that (AFAIK) could only be used with the 9130a drives. The pinout is shown in the service manual for the HP 9130K on page 2-2.

* The Series-80 family was diversified still further with the introduction of the HP-86A in July 1982. This was essentially an 87A built in a highly modular fashion and more RAM. (Again, the machine was marked "HP-86", not HP-86A.) The 86A used an external monitor (either 9-inch -- 82912A -- or 13-inch -- 82913A -- note that these monitors had

The 86A came standard with interfaces to accommodate two 9130A disc drives. The 9130A had a data storage capacity of 270K. The 13272A drive was the same as the more common 9130A; but it came with an interface for connecting to HP terminals.