Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!mnetor!uunet!ukma!nrl-cmf!ames!ucbcad!ucbvax!RADC-TOPS20.ARPA!GUBBINS From: GUBBINS@RADC-TOPS20.ARPA (Gern) Newsgroups: comp.sys.zenith.z100 Subject: Z-100 at 10.7MHz (Almost!) Message-ID: <12354808918.10.GUBBINS@RADC-TOPS20.ARPA> Date: Mon, 30-Nov-87 15:32:21 EST Article-I.D.: RADC-TOP.12354808918.10.GUBBINS Posted: Mon Nov 30 15:32:21 1987 Date-Received: Thu, 3-Dec-87 23:56:16 EST Sender: daemon@ucbvax.BERKELEY.EDU Organization: The ARPA Internet Lines: 11 My 'experimental' Z-100 is is running at 10.6666666MHz using only the 'ALS' 8MHz upgrade ICs. It gets a Norton SI rating of 4.0. The only problems are that I can't boot at that speed (must switch-up from the motherboard 5MHz) and that Diagnostics reports failure of the RS-232C ports and floppy controller (this system does not have a winnie). Changing all the 'ALS' 8MHz parts to 'F' series yielded no effect, as well as increasing I/O wait states from 2 to 3 and with mods to 6 and 8. I am working on it... If anyone has any suggestions... Gern -------