Telmac TMC-600

The Telmac TMC-600^[1] is a Finnish microcomputer^[2] introduced in 1982 by Telercas Oy,^[3] a Finnish importer of RCA microchips.^[4][5]

Telmac TMC-600

Telmac TMC-600
Developer	Telercas Oy
Type	Home computer
Release date	1982; 43 years ago (1982)
Media	Compact Cassette
Operating system	Telercas SBASIC
CPU	RCA 1802 (COSMAC) @ 3.58 MHz
Memory	9 kB RAM, expandable to 30 kB
Display	VIS (CDP1869 + CDP1870)
Graphics	80×72 pixels display resolution, 40x24 characters
Sound	CDP1869 one channel
Predecessor	Telmac 1800
Successor	Telmac TMC-2000

Only 600 units were produced, making it very rare today.^[6] The TMC-600 was the only commercially available BASIC-based home computer designed and manufactured in Finland.^[2]

Specifications

• RCA 1802A (COSMAC) CPU at 3.579 MHz^[2][3][4]
• Cassette tape interface (DIN-5)
• VIS (Video Interface System): CDP1869 and CDP1870 companion ICs^[4]
• 8 kB RAM (expandable to 30 kB) and 1.5 KB of video RAM^[2][4]
• 80 × 72 pixels graphical display resolution
• 40 x 24 character display resolution
• CDP1869 one channel sound^[2][4]
• Telercas SBASIC
• Ports: TV RF, composite video (DIN-5), Centronics, expansion^[2]