Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!mips!pacbell.com!tandem!zorch!amiga0!mykes From: mykes@amiga0.SF-Bay.ORG (Mike Schwartz) Newsgroups: comp.sys.amiga.advocacy Subject: Re: The Amiga's Future Message-ID: Date: 9 Jun 91 08:58:28 GMT References: <1991Jun4.003619.3661@news.iastate.edu> <1991Jun4.023950.11286@ncsu.edu> <16577@darkstar.ucsc.edu> <22163@cbmvax.commodore.com> <18@ryptyde.UUCP> ommodore.com> <18@ryptyde.UUCP> rkushner@sycom.UUCP (Ronald Kushner) writes: >torrie@cs.stanford.edu (Evan Torrie) writes: >> >> Hmmm. A standard Mac serial port, when connected to the Personal >>Laserwriter LS, transfers data to the printer at approx 970 Kbit/s. >>So, the Amiga's serial port is a 1.2Mbit device? >> > >Output from the Amiga can go as high as 1 megabaud, but input is seriously >limited to 19200 on an Amiga 500 with some fast ram, and I have heard the >Amiga 3000 does pretty good inputting 38400 on the built in serial device. I >have not yet played with high speeds on my A3000's built in serial port, but a >friend with an A2500 has told me 38400 was no problem. There is a software >limitation to catch data comming in, but outgoing data will go as fast as you >set it. They really need to add a few buffers to the UART in the PAULA chip, >if they want to make some of us happy...But then, who knew in 1984 we would >all be using V.42bis modems that wants to run at 38400? I mean, 2400 was fast >THEN! > I run the serial ports on my two amigas (2500/30 to A500) at over 1 Megabit all day every day, in both directions. At that speed, the A500's 68000 has zero time for interrupts, so it must poll for input with interrupts disabled. The 030 doesn't even flinch. As well, for $400, there is an Appletalk board for the Amiga that also supports 2x (or higher than that...) Appletalk speed. The software that comes with the board allows Amigas and Macs to form an Appletalk network with Amigas capable of being both clients and servers (thank you multitasking). -- **************************************************** * I want games that look like Shadow of the Beast * * but play like Leisure Suit Larry. * ****************************************************