[Coco] POKE 65495,0

[jdaggett at gate.net]

On 31 Jan 2007 at 11:59, Mike Pepe wrote:

> However as I'm sure
> someone already pointed out, reading data from DRAM will refresh that
> entire column, so if something is running and either has properly
> defined loops or relatively random access, the running code will keep
> the RAM refreshed on its own
**********

DRAM need regular refresh or they become very absent minded. You can't 
depend on random reads and writes to the memory to ensure proper refresh. 
Reading the DRAm I believe will refresh the ROW and not the Column. A read or 
write to the DRAM is analogous to doing a RAS refresh. 

james