The driver is used in the 8-bit / 256-color SVGA server and the mono server. The following chipsets for Oak Tech. Inc. are supported:
8-bit VGA chipset, with up to 256Kbytes of DRAM. All the boards I have seen are only able to do standard VGA modes. (ie. up to 320x200x256 and up to 640x480x16). Currently the probe for this chip is disabled, so use the generic VGA driver instead.
ISA SVGA chipset, up to 512Kbytes of DRAM (usually 70/80 ns).
Enhanced version of the 067, with support for 1Mbyte and up to 65 Mhz dot-clock. This chipset is capable of resolutions up to 1024x768x256 colors in Non-Interlaced mode, and up to 1280x1024x16 colors Interlaced.
One of the first VLB chipsets available, it has a 16-bit external data path, and a 32-bit internal memory-controller data path. It features some acceleration hardware: register-based color expansion, hardware cursor, a primitive BitBlt engine, a 64 bit graphic latch and some other new (on its time) features. Maximum BIOS resolutions are 1024x768x256 Non-Interlaced and 1280x1024x256 interlaced. Maximum Dot-Clock is 80Mhz, but is usually coupled with the OTI068 clock generator capable of frequencies up to 78Mhz. This chipset supports up to 2MBytes of 70/70R ns DRAM.
These are new, PCI chipsets by Oak Tech. Inc. Support is not included for them, as they are very rare and I haven't had the chance to look at one of these boards. We have been unable to locate 107's. If anybody has such a board and can donate it to XFree86, we would be more than glad to add support for them.
An OTI111 is now available and we are working on support for it.
All the chipsets up to the OTI087 are "Backwards compatible", in fact some early drivers for the OTI087 based chipsets were those made for the 077.
Accelerated support is included only for OTI087 chipsets, also Mono server is only included for 067/077 chipsets.