Path: utzoo!attcan!uunet!fernwood!apple!well!dsmall From: dsmall@well.UUCP (David Small) Newsgroups: comp.sys.atari.st Subject: Re: INFO-ATARI16 Digest V89 #727 Message-ID: <14806@well.UUCP> Date: 3 Dec 89 10:22:26 GMT References: <8912010818.AA04783@ucbvax.Berkeley.EDU> Reply-To: dsmall@well.UUCP (David Small) Organization: Whole Earth 'Lectronic Link, Sausalito, CA Lines: 18 The referenced note asks why it's so difficult to make the Atari ST talk Appletalk (now called Localtalk). Basically, the Atari doesn't have the needed chips built in. Apple uses the SCC high-speed serial communications chip to drive Appletalk; it's interrupt driven also. Atari's MFP tops out at 19,200 baud, if I recall correctly. Also, the VIA timer chip in the Mac appears to be in the mix somewhere. So, it's a matter of adding several chips to the ST, a machine that was not designed to have chips added to it (to be charitable). Then, it's a matter of hooking up software wiring to th pseudo SCC, interrupts, and so forth. That's the basic problem. Let me know if I need to explain further. - thanks, Dave / Gadgets