page_title: Signetics 2650
section_title: Second sources
hierarchical_section_title: Signetics 2650 / Second sources
caption_attribution_description: English: CPU Philips MAB2650 (= Signetics 2650)
context_page_description: The Signetics 2650 was an 8-bit microprocessor introduced in mid-1975. According to Adam Osborne's book An Introduction to Microprocessors Vol 2: Some Real Products, it was "the most minicomputer-like" of the microprocessors available at the time. A combination of missing features and odd memory access limited its appeal, and the system saw little use in the market. Signetics became better known as a second-source supplier for the MOS 6502.
context_section_description: In 1975, Signetics was sold to Philips and the 2650 was later incorporated into the Philips Semiconductors line. They made a version of the 2650 called the MAB2650A. Valvo, a subsidiary of Philips, sold the 2650 in Germany. Valvo also sold the VA200 single board (Eurocard) 2650 computer with 4 KB PROM/EPROM, 1 KB RAM and four I/O ports.
  Other producers of licensed copies of the chip were Harris and Intersil.
caption: Philips MAB2650A
exif: {}