fix issue with display size 256x64

git-svn-id: svn://svn.code.sf.net/p/pinmame/code/trunk@3597 6f51dfdd-75df-4273-8f3b-818b1e6aa8bf
fix stupid bug in conversion code

..as i don't have a PinDMD to test directly

git-svn-id: svn://svn.code.sf.net/p/pinmame/code/trunk@3598 6f51dfdd-75df-4273-8f3b-818b1e6aa8bf
fix typo

git-svn-id: svn://svn.code.sf.net/p/pinmame/code/trunk@3599 6f51dfdd-75df-4273-8f3b-818b1e6aa8bf
fix 256x64 display output for PinDMD

git-svn-id: svn://svn.code.sf.net/p/pinmame/code/trunk@3600 6f51dfdd-75df-4273-8f3b-818b1e6aa8bf
add some more notes on PinDMD

git-svn-id: svn://svn.code.sf.net/p/pinmame/code/trunk@3601 6f51dfdd-75df-4273-8f3b-818b1e6aa8bf