(Max Ram: 1Mb, Max Dclk: 68MHz@5V)
This is a very similar chip to the 65520. However it additionally has the ability for mixed 5V and 3.3V operation and linear addressing of the video memory. (Max Ram: 1Mb, Max Dclk: 56MHz@3.3V, 68MHz@5V)
This is the first version of the of the ct655xx that was capable of supporting Hi-Color and True-Color. It also includes a fully programmable dot clock and supports all types of flat panels. (Max Ram: 1Mb, Max Dclk: 56MHz@3.3V, 68MHz@5V)
The chip is very similar to the 65540, with the addition of H/W cursor, pop-menu acceleration, BitBLT and support of PCI Buses. PCI version also allow all the BitBLT and H/W cursor registers to be memory mapped 2Mb above the Base Address. (Max Ram: 1Mb, Max Dclk: 56MHz@3.3V,68MHz@5V)
This chip is specially manufactured for Toshiba, and so documentation is not widely available. It is believed that this is really just a 65545 with a higher maximum dot-clock of 80MHz. (Max Ram: 1Mb?, Max Dclk: 80MHz?)
This chip is similar to the 65545, but it also includes XRAM support and supports the higher dot clocks of the 65546. (Max Ram: 1Mb, Max Dclk: 80MHz)
These chips are a completely new architecture to previous ct655xx chips. They include many new features, including improved BitBLT support (24bpp color expansion, wider maximum pitch, etc), Multimedia unit (video capture, zoom video port, etc) and 24bpp uncompressed true color (i.e 32bpp mode). It also appears that memory mapped I/O is possible on all bus configurations. Support for these chips are new to the server and currently quite limited. Testing with these chips has only been done on Toshiba 720CDT's. There is only limited support for H/W acceleration at this point. (Max Ram: 4Mb, Max Dclk: 80MHz@3.3V,110MHz@5V)
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