Re: Something else... 8501 GATE-IN

From: Mia Magnusson <mia_at_plea.se>
Date: Wed, 14 Mar 2018 17:51:42 +0100
Message-ID: <20180314175142.00006b46@plea.se>
Den Tue, 13 Mar 2018 16:49:11 +0100 skrev Gerrit Heitsch
<gerrit@laosinh.s.bawue.de>:
> 6) When set to display=off, TED runs the CPU at double speed all the 
> time (AEC constantly HIGH), except for 5 consecutive refresh cycles
> each scan line. With my C16 converted to SRAM (*), too bad this
> cannot be disabled. :)

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. :)

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Received on 2018-03-14 22:40:09

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