Kylearan Posted December 29, 2014 Share Posted December 29, 2014 Hi, if I read the HMOVE table at http://www.qotile.net/minidig/code/hmove.txt right, it shouldn't make any difference if I do a STA HMOVE at cycle 0 (e.g., immediately after a STA WSYNC) or cycle 1, correct? Is it known if this behavior is compatible over different 2600 models? In particular, I would like to move P0 and P1 8 pixels to the right (HMPx=0x80), but in my kernel the STA HMOVE might happen either at cycle 0 or cycle 1. Making sure it would always happen at cycle 0 would cost me >300 bytes of ROM, which I would like to avoid. I know that HMOVEs at cycle 73, 74 or 75 behave differently on some models, but does anyone know if a HMOVE at cycle 1 is fully compatible with all 2600 models? Thanks, -Kylearan Quote Link to comment Share on other sites More sharing options...
+SpiceWare Posted December 29, 2014 Share Posted December 29, 2014 Cycles counts are after the instruction runs, so an STA HMOVE that's done immediately after an STA WSYNC occurs at cycle 3. ... sta WSYNC; 76/0 sta HMOVE; 3 1 Quote Link to comment Share on other sites More sharing options...
Kylearan Posted December 29, 2014 Author Share Posted December 29, 2014 Ah okay, looks like I use a different terminology, sorry. So to clarify my question: Will a STA HMOVE at cycle 3 behave the same as if it occurs at cycle 4 on different 2600 models? Quote Link to comment Share on other sites More sharing options...
LS_Dracon Posted December 30, 2014 Share Posted December 30, 2014 According this doc, odd changes happens only after cycle 10. So yes, anything besides 10th cycle will works exactly as should be. But yes, different TIA versions behave differently. I would say always hit HMOVE right after WSYNC, unless you're trying some new stuff. Hmove right after Wsync works fine on all consoles BTW. Quote Link to comment Share on other sites More sharing options...
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