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CRTC

287 bytes added, 00:57, 27 April 2025
/* Unused clones */
* [[Media:VL6845 VTi.pdf|VL6845]] by VTi
* [[Media:C6845 CRTC (CAST).pdf|C6845]] by Cast

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* [[Media:Mos 6545-1 crtc.pdf|CRTC MOS 6545]] (MOS, Rockwell, Synertek) is pin-compatible with the 6845. Its differences are found in the R8 register.* [https://www.cpcwiki.eu/forum/other-retro/interesting-discussion-about-the-c128-s-cpm-poor-performance/msg223058/#msg223058 MOS 8563] It is an evolution of the 6545/6845 CRTC chip, with blitter abilities to autonomously perform small block memory copies within its dedicated video RAM.
* [[Media:MB89321B FUJ.pdf|MB89321B]] by Fujitsu. It is pin-compatible with the 6845
* [[Media:MB89321A datasheet CRTC.pdf|MB89321A]] by Fujitsu. Enhanced version that adds smooth scroll, screen partitioning, independent scrolling of screen partitions, and other convenient features
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