Thread: Mk14 vdu
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Old 9th Nov 2020, 10:16 pm   #855
Timbucus
Octode
 
Join Date: Mar 2019
Location: Barry, Vale of Glamorgan, Wales, UK.
Posts: 1,364
Default Re: Mk14 vdu

Sounds good. Then we lead onto selecting other graphics modes like split screen characters and graphics... for that toppage needs to strap to that line as well.

For the moment on my Orton View I have a slide switch that changes the 330 Ohm resistor from driving PS3 (Base RAM) to driving PS1 (Exp RAM) - I will just make sure that all my software does not set the relevant bit to an Output - while testing I realized I had wired them back up backwards - luckily I had the scope on and saw the battle on the line...
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