Talk:83Plus:Ports:21

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Revision as of 09:06, 3 October 2011 by Dr. D'nar (Talk | contribs)

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I've been looking into this port a bit more, it seems to control ram execution restriction. Only bits 0,1,4, & 5 do anything. I 'm not exactly sure what the lower nibble does but I have looked into the upper one.

Upper Nibble Page 87 Page 85 Page 83 Page 81
3 Restricted Restricted Restricted Allowed
2 Restricted Restricted Restricted Allowed
1 Restricted Allowed Restricted Allowed
0 Allowed Allowed Allowed Allowed

I post this on the talk page because I don't think there is enough yet and I haven't tested on the 84+SE. Also the 84+ has this port set as 0, yet that seems to crash the 83+se. Hopefully someone has a better clue than me.--Jim e 22:00, 19 Aug 2005 (PDT)


I said it very sneakily. Unless you specifically know what you are looking for, it won't mean anything to you. If it's too early though, feel free to change it back. --thepenguin77 14:00, 1 October 2011

Er, it's not quite right. 02 does not lock 2C.