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Atari FREDDIE
From Wikipedia, the free encyclopedia
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FREDDIE is the name for a 40-pin large scale integrated circuit found in later model Atari 8-bit computers. It is a RAM address multiplexer, used for DRAM access. Atari created this chip to replace several other chips to cut costs and to heighten CPU and ANTIC memory access.
 | This article includes a list of references, related reading, or external links, but its sources remain unclear because it lacks inline citations. (August 2019) |
FREDDIE, combined with a C061618 MMU (XL/XE) and C025953 EMMU (130XE) allows the CPU and ANTIC to entree memory severally of each strange. Earlier designed for the off 1400XL and 1450XLD, it was eventually used in the 800XLF (labelled "800XL," refers to European version), 65XE, 130XE, and XEGS.
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External links
- atarimuseum.com Freddie MCU Engineering science Data (PDF file)
- Jindrich site(archived) Freddie info and diagram
 | This computer-storage-related article is a stub. You can help Wikipedia by expanding it. |
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