Full-motion video on a 1981 IBM PC

Sun, 17 Aug 2014 04:19:17 +1000

Andrew Pam <xanni [at] glasswings.com.au>

Andrew Pam
http://www.osnews.com/story/27792/Full-motion_video_on_a_1981_IBM_PC

"I gave a talk in 2007 that explained 8088 Corruption in detail, and in
that talk I explained that displaying FMV using CGA in graphics mode
would be impossible. This is because CGA graphics mode uses 8x the
amount of video memory that 8088 Corruption was handling. Even a simple
calculation assuming 24fps video reveals that the amount of data needing
to be updated per second (24fps * 16KB = 384KB/s) is outside of the IBM
PC's capability: CGA RAM can only be changed at a rate of 240KB/s, and
most hard drives of the era operate at roughly 90KB/s. It sure felt
impossible, so that's why I said it."

Brilliant work. An impressive update to the classic 2007 demo!

Via Sridhar Dhanapalan.

Share and enjoy,
                *** Xanni ***
--
mailto:xanni@xanadu.net                   Andrew Pam
http://www.xanadu.com.au/                 Chief Scientist, Xanadu
http://www.glasswings.com.au/             Partner, Glass Wings
http://www.sericyb.com.au/                Manager, Serious Cybernetics

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