Path: utzoo!attcan!uunet!deimos!iowasp!syswtr From: syswtr@iowasp.physics.uiowa.edu Newsgroups: comp.os.cpm Subject: Re: Need info on 5832 and 58321 clock chips Message-ID: <85.25fe1792@iowasp.physics.uiowa.edu> Date: 14 Mar 90 16:06:09 GMT References: <847@gold.GVG.TEK.COM> Organization: Department of Physics and Astronomy, University of Iowa Lines: 16 In article <847@gold.GVG.TEK.COM>, grege@gold.GVG.TEK.COM (Gregory Ebert) writes: > In article RALPH@UHHEPG.BITNET (Ralph Becker-Szendy) writes: >>Hi >> >>The subject line says it all: I need some information (pin assignment, register >>locations, interfacing) for the MSM 5832 and RTC 58321 clock chips (in view of >>putting one of them onto my homebrew Z80 system). >> If you are building your own hardware, the 5832 has very slow access time. A 4 Mhz Z80 will probably not be relaible when reading/writing the 5832. A slower processor (i.e. 2.5 Mhz) may work... National makes a pair of chips that are faster and simpler to use, the 8570 and 8571... Bill Robison SYSWTR@IOWASP.PHYSICS.UIOWA.EDU