Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!mnetor!seismo!esosun!ucsdhub!sdcsvax!nosc!humu!uhccux!yuan From: yuan@uhccux.UUCP (Yuan Chang) Newsgroups: comp.sys.apple Subject: Re: 6502-65C02 Message-ID: <461@uhccux.UUCP> Date: Fri, 1-May-87 07:15:21 EDT Article-I.D.: uhccux.461 Posted: Fri May 1 07:15:21 1987 Date-Received: Sat, 2-May-87 16:06:53 EDT References: <8704281927.aa23754@SPARK.BRL.ARPA> <734@puff.WISC.EDU> Reply-To: yuan@uhccux.UUCP (Yuan Chang) Organization: U. of Hawaii, Manoa (Honolulu) Lines: 16 In article <734@puff.WISC.EDU> schumann@puff.WISC.EDU (Christopher Schumann) writes: >The latest discussion here says that the 65C02 doesn't work in older ][+'s >because they have a small(?) timing problem. > >Chris Schumann (6502 Guru) schumann@puff.wisc.edu I thought it'd be due to all those "undocumented" instructions that people use like crazy for copy-protection? Unless all they did with the 65C02 was to document those opcodes... Ever seen one of those programs that's made up of more than 5% of those "undocumented" opcodes? Hard as h*ll tracing the thing. -- UUCP: {ihnp4,seismo,ucbvax,dcdwest}!sdcsvax!nosc!uhccux!yuan ARPA: uhccux!yuan@nosc.ARPA INTERNET: yuan@UHCC.HAWAII.EDU AT&T: (808) 395-1732 "I'm an Amigoid, she's an Amigoid, they're Amigoids, - Yuan Chang - Wouldn't _y_o_u like to be an Amigoid too?"