Search found 4 matches

by amin2312
Tue Aug 04, 2009 3:07 am
Forum: Programming
Topic: who knows a full test code for 6502?
Replies: 3
Views: 6069

who knows a full test code for 6502?

i had written a emulator for 6502,but i can't know it is right,so who can give me a full test code to test every instruction for it?thank u very much.
by amin2312
Thu Jul 30, 2009 8:59 am
Forum: Programming
Topic: help!A question
Replies: 4
Views: 3081

thank you very much!!thank u solve my question,thank u again!
by amin2312
Thu Jul 30, 2009 7:06 am
Forum: Programming
Topic: help!A question
Replies: 4
Views: 3081

thank u.i have understand.

but if "INC Absolute,X" is "INC $10E0,$56",then the page was crossed,so it will be spend an extra cycle.why the "INC Absolute,X" instruction dont take "(+1 if page crossed)"?

INC instruction reference:http://www.obelisk.demon.co.uk/6502/reference.html#INC
by amin2312
Thu Jul 30, 2009 4:54 am
Forum: Programming
Topic: help!A question
Replies: 4
Views: 3081

help!A question

i dont understand,like "AND Absolute,X" instruction that spend cycles is write "4 (+1 if page crossed)",what's mean "+1 if page crossed"?

who man can tell me,thank you very much