Replay	TeraLogic850
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The TL850 is at heart an MPEG decoder, but it's got doodads and chrome.

Inputs:

• MPEG transport stream
• CCIR656 video (decoded NTSC or PAL)
• analog audio

outputs:

• CCIR656 video
• RGB or YUV -- connected straight to the 4k's VGA port?
• 5.1 audio -- connected straight to the 4k's optical audio out?

can decode 1 HD or 4 SD streams simultaneously

supports on-chip letterboxing and pan-and-scan for showing 16:9 on 4:3 (how does it decide where to scan to???)

supports PIP and combining from multiple inputs

graphics plane with 24bit color + 8bit alpha -- should play with the 4th 'color' channel in bmx files, see if it's passed on as the alpha channel. a completely translucent interface, ahoy?

There's a 'tlhelp' vxworks shell command (accessible via the ptvio shell's 'call' command), and lots of debugging output - it's all disabled, including the output of the tlhelp & other shell commands, though. write CougLib?.o byte 0x1c5b7 with value 0x5f to re-enable (versions 4.1.0 and 4.1.1; be careful on anything else). the ptvio shell command "writebyte CougLib?.o 0x1c5b7 0x5f" will do this.

-- ToddLarason - 24 May 2002

http://www.teralogic-inc.com/Solutions/PDFs/TL850.pdf

-- TWikiGuest - 24 May 2002