KIM-1
The KIM-1 is a home computer based on the 6502 CPU from the US manufacturer Commodore International , which was available for purchase from 1976.
Technical specifications
The KIM-1 (acronym from Keyboard Input Monitor ) is a single - board computer without a housing . Its main electronic components are the 6502 microprocessor clocked at 1 MHz, two special components (a total of 2 KB read-only memory with the operating system, 64 byte RAM , various input / output channels) and 1 KB additional main memory . The KIM-1 also has a six-digit, 7-segment LED display and 24 keys for direct input of hexadecimal codes. Some of the input / output channels can be used as a serial interface, to connect an external terminal , a printer ( TTY with 20 mA loop) or to control a cassette recorder. The system can be expanded with additional memory or other peripherals via a system bus. An expansion card developed by Don Lancaster enables, for example, 32 × 16 capital letters to be displayed on a television or monitor.
A replica in the form of the MCS Alpha 1 was delivered with a housing, an internal power supply and an external keyboard. In addition, it showed some changes: eight LEDs are installed and an improved program for more convenient operation (monitor) has been implemented.
software
The operating system of the KIM-1, consisting of TIM (acronym for Terminal Input Monitor ) and KIM (acronym for Keyboard Input Monitor ), allows operation with a cassette recorder as a mass storage device, control of the LED display and querying the keyboard. For the computer there are, among other things, higher programming languages such as Microsoft BASIC , which debuted on the KIM-1.
Web links
- http://zimmers.net/cbmpics/cbm/kim1/kim-hints.txt - Tips and FAQ about the KIM-1
- http://users.telenet.be/kim1-6502/ - Manuals for KIM-1 hardware and programming
Individual evidence
- ^ Don Lancaster: The Cheap Video Cookbook. 1978, ISBN 0-672-21524-1 .