Re: Something else... 8501 GATE-IN

From: smf <smf_at_null.net>
Date: Wed, 14 Mar 2018 17:24:12 +0000
Message-ID: <919de33a-7859-9bed-b1b2-17a39baf6761@null.net>
On 14/03/2018 16:51, Mia Magnusson wrote:

> Well, if you add hardware to disconnect TED from RAM you could make a
> circuit that syncs on hsync (I guess you'd need a sync separator for
> that) and counts clock cycles and disconnects TED from RAM and forces
> AEC high during those 5 cycles. :)

If you're messing with timing then use ram that is rated at double the 
speed of the CPU when the screen is off and interleave the CPU and TED, 
forcing AEC high all the time. It will be simpler than trying to figure 
out where the refresh cycles are and it will run fast even with the 
screen on.

Timing sensitive software would fail, but it will also fail if you give 
the CPU those extra 5 cycles per line.
Received on 2018-03-14 22:38:59

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