* CPU: 8-bit CDP1802 3.58 MHz
* Memory: 20-28 KB internal ROM operating system, 8 KB RAM
* Sound: 8 octaves, white noise generator, internal speaker
* Color: 8 colors, blink attribute
* Resolution: 240 x 216 pixels (40 x 24 or 20 x 24 characters)
* Connectors: Tape recorder (DIN), EURO expansion bus, composite video, Centronics printer, PAL TV
MESS supports for the tmc600s2 a tape drive and up to four floppy drives. The former one supports .wav tapes and uses the "cassette" (cass) device; the latter ones support disk images in .dsk format and use "floppydisk1" (flop1) to "floppydisk4" (flop4).
Also notice that the "printer" (prin) is emulated as well and a "quickload" (quik) feature is available for .sbp files. Misc
* press C at boot prompt to start the computer
* type HELP for a list of commands
* type SCREEN @4700 to see a picture Keyboard
This system requires full keyboard emulation to work correctly. At startup, full keyboard emulation mode is enabled by default. Whilst in full keyboard emulation mode, some key associated functionality may be disabled (like the ESC key for EXIT). The keyboard emulation mode is toggled using the "Scroll Lock" key (by default). RAM options
Different RAM configurations are possible for the tmc600s2 in MESS. You can switch between them, changing the -ramsize parameter. At command line, you simply have to add ''-ramsize ram_value'', where //ram_value// can assume one of the following values
* keyboard repeat delay varies, natural keyboard may help
* white noise is not emulated
* real-time clock is not emulated
History and Trivia
Telmac TMC-600 is the only microcomputer ever designed and manufactured in Finland. Only 600 units were produced, hence the model name. The computer casing was available in black and brown. The computer was designed by Timo Virtaneva and Hannu Peiponen. Two versions were released, the later allowing the connection of multiple peripherals simultaneously.
The TMC-700 expansion added Centronics interface with a custom connector, an RF modulator, and a real-time clock. 360KB 5.25" and 8" floppy disk drives could be connected using an external controller card. Other add-ons included RAM expansions, an I/O controller, an A/D converter, an RS-232C controller, a B/W 132-character display controller, and a parallel/serial slave computer. The TMC-600 was designed also for use in industrial process control applications, so BASIC ROMs with user-customized keywords were available on order.
The manufacturer, Telercas Oy, was an early Finnish distributor for RCA semiconductors. Telercas Oy was merged with the Finnish electronics retailer Yleiselektroniikka Oy in 1988.
* Pelikonepeijoonit -- http://www.pelikonepeijoonit.net/cgi-bin/page.cgi?pkpcode=telmac