| DISER Lilith | |
| Developer: | ETH Zurich |
| Manufacturer: | Modula Computer Systems |
| Family: | Wirth |
| Type: | workstation |
| Price: | $8000 |
| Discontinued: | Yes |
| Units Sold: | 120[1] |
| Units Shipped: | 120 |
| Media: | Floppy disk 5.25inches 140 K |
| Os: | Medos-2 (Modula-2) |
| Cpu: | AMD 2901 |
| Memory: | 256 K (131,072 16-bit words) |
| Storage: | 15 MB hard disk |
| Display: | 12inches monochrome bitmapped |
| Dimensions: | 15.5x |
| Successor: | Ceres |
| Marketing Target: | Research |
The DISER Lilith is a custom-built workstation computer based on the Advanced Micro Devices (AMD) 2901 bit-slicing processor, created by a group led by Niklaus Wirth at ETH Zurich.[2] [3] The project began in 1977, and by 1984 several hundred workstations were in use. It has a high-resolution full-page portrait oriented cathode-ray tube display, a mouse, a laser printer interface, and a computer networking interface. Its software is written fully in Modula-2 and includes a relational database program named Lidas.
The Lilith processor architecture is a stack machine.[2] Citing from Sven Erik Knudsen's contribution to "The Art of Simplicity": "Lilith's clock speed was around 7 MHz and enabled Lilith to execute between 1 and 2 million instructions (called M-code) per second. (...) Initially, the main memory was planned to have 65,536 16-bit words memory, but soon after its first version, it was enlarged to twice that capacity. For regular Modula-2 programs however, only the initial 65,536 words were usable for storage of variables."[4]
The development of Lilith was influenced by the Xerox Alto from the Xerox PARC (1973) where Niklaus Wirth spent a sabbatical from 1976 to 1977. Unable to bring back one of the Alto systems to Europe, Wirth decided to build a new system from scratch between 1978 and 1980, selling it under the company name DISER (Data Image Sound Processor and Emitter Receiver System).[5] In 1985, he had a second sabbatical leave to PARC, which led to the design of the Oberon System. Ceres, the follow-up to Lilith, was released in 1987.
| Medos-2 | |
| Developer: | Svend Erik Knudsen |
| Family: | Wirth |
| Working State: | Discontinued |
| Discontinued: | Yes |
| Marketing Target: | Research |
| Programmed In: | Modula-2 |
| Language: | English |
| Update Model: | Compile from source code |
| Package Manager: | Modula-2 modules |
| Supported Platforms: | Lilith (AMD 2901) |
| Kernel Type: | Modular, object-oriented |
| Succeeded By: | Oberon |
The Lilith operating system, named Medos-2, was developed at ETH Zurich, by Svend Erik Knudsen with advice from Wirth. It is a single-user, object-oriented operating system built from modules of Modula-2.[3] [6] [7]
Its design influenced the design of the operating system Excelsior, developed for the Soviet Kronos workstation (see below), by the Kronos Research Group (KRG).[8]
From 1986 into the early 1990s, Soviet Union technologists created and produced a line of printed circuit board systems, and workstations based on them, all named Kronos. The workstations were based on Lilith, and made in small numbers.[9]
The computer mouse of the Lilith was custom designed, and later used with the Smaky computers. It then inspired the first mice produced by Logitech.
