Path: utzoo!mnetor!uunet!lll-winken!lll-lcc!ames!hao!gatech!udel!princeton!mccc!pjh From: pjh@mccc.UUCP (Peter J. Holsberg) Newsgroups: comp.sys.ibm.pc Subject: Re: Nec v20 and simcga/hgcibm and accelerator boards and ... Message-ID: <266@mccc.UUCP> Date: 1 Mar 88 14:57:27 GMT References: <17145@watmath.waterloo.edu> Reply-To: pjh@mccc.UUCP (Peter J. Holsberg) Organization: The College on the Other Side of US Route 1 Lines: 16 In article <17145@watmath.waterloo.edu> 221.162.fido!Geoffrey_Welsh@watmath.waterloo.edu writes: | | The posting asked for a semi-informed reply, and I am definitely |qualified to provide that! (B^>) | | The only compatibility problems in the NEC V20 are caused by its |built-in Z80 emulation, which is controlled by a bit in the CPU's FLAGS ^^^ If only that were so! The V20 executes (NOT emulates) 8080 instructions, but not the extended ones that the Z80 has. -- Peter Holsberg UUCP: {rutgers!}princeton!mccc!pjh Technology Division CompuServe: 70240,334 Mercer College GEnie: PJHOLSBERG Trenton, NJ 08690 Voice: 1-609-586-4800