Path: utzoo!utgpu!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!bloom-beacon!think!ames!amdcad!sun!pitstop!sundc!seismo!uunet!munnari!otc!metro!ipso!runx!betz From: betz@runx.ips.oz (Andrew Betzis) Newsgroups: comp.sys.mac Subject: MACPLUS hardware question (repost)? Message-ID: <1915@runx.ips.oz> Date: 28 Dec 88 00:58:28 GMT Organization: RUNX Un*x Timeshare. Sydney, Australia. Lines: 13 ?? Has anyone had experience in interfacing to the MacPlus via the 68K? The problem I have is trying to have data ready by the time DTACK/ is sampled in a normal MacPLus BUS cycle. Is there any way (without modifying the CPU board) to delay DTACK/ so that a data transfer would take two normal BUS cycles? Another way would be through VPA, VMA but is would take at least three normal BUS cycles. thanks & :-) Andrew Betzis. ACSnet: betz@runx.ips.oz JANET: runx.ips.oz!betz@ukc ARPA: betz%runx.ips.oz@seismo.css.gov CSNET: betz@runx.ips.oz UUCP: {enea,hplabs,mcvax,prlb2,seismo,ubc-vision,ukc}!munnari!runx.ips.oz!betz