From: Terry_Sare AT dell DOT com Message-ID: To: opendos AT delorie DOT com Subject: RE: IBM PC-1 (was Misc., nee BASIC & EMS, nee Optimizing CONFIG.S YS...) Date: Wed, 27 Dec 2000 11:43:41 -0600 MIME-Version: 1.0 X-Mailer: Internet Mail Service (5.5.2650.21) Content-Type: text/plain; charset="iso-8859-1" Reply-To: opendos AT delorie DOT com Idle Trivia. Kaypro used Z80 and then switched to 8088 in their first DOS machine. Have schematics somewhere for it. Terry An 8085 cab be upgraded to an 8088 and use the same hardware and chipset as the 8085, but when you do this, you cannot use an 8087 co-processor. Kaypro and some other manufactures put both processors in thier systems, the 8085 and 8088. Pat _________________________________________________________ Do You Yahoo!? Get your free @yahoo.com address at http://mail.yahoo.com