Heathkit H-11a
| Description | |
| Manufacturer | Heath/Zenith |
| Model | H-11A |
| Date Announced | November, 1977 |
| Date Canceled | Unknown |
| Number Produced | Thousands to Tens of thousands |
| Country of Origin | USA |
| Price | $1,200 in kit form |
| Current Value | $50-$500 |
| Specifications | --- |
| Processor | LSI-11 |
| Speed | About 2.5 MHz |
| RAM | 32K words |
| ROM | Up to 8K |
| Storage | |
| Expansion | 7 slots |
| Bus | LSI |
| Video | |
| I/O | Serial, Parallel |
| OS Options | HT-11, UCSD-P, others |
| Notes | The Heathkit H-11 was an expensive alternative to the Heathkit H-8 Computer that was supposed to provide the power of a DEC PDP-11/03 on the desktop. Unfortunately, mainly due to memory constraints, it wasn't quite able to do this but it was still a very serviceable machine. It's cost did keep it from becoming too popular. |
| Related Items in Collection | H27 8" disk subsystem, tons of manuals, software and more. |
| Related Items Wanted | Additional software, manuals, and the Heathkit H-10 paper tape subsystem. |
The H-11 in my collection hasn't yet been fully evaluated but it does run without smoking. Look for updates and here as time permits.
The H-11 came with several of the standard DEC cards
The H-11 came pretty much fully documented. Here are the Assembly manual and schematics
Tons of other Heathkit reference manuals were included in these binders.
As were the appropriate DEC books.
The system came with lots of software on 8" disks.
Still more software for this system.
The H-11 gear in my collection was kindly donated by Gary Appel.