glamdrng@pnet51.cts.com (Rocky Lhotka) (07/04/89)
A while back I read a post about a DECnet product for the Amiga. Since I have
heard nothing about it since then, I thought I would give the company a call.
The company is Sydnesis, and they were VERY nice and it was a pleasure to talk
to them.
DECnet (or more accurately TSSnet) for the Amiga is a port of the Mac's
TSSnet. It is not released yet (he said they are shooting for the end of the
year...), but will provide Phase IV end node support via a serial port or an
ethernet board. (note I said 'a' serial port - he mentioned that the built-in
port didn't work above 19200 baud, but some of the others went much higher)
The cost for it will be around $400 he said, though that was not a firm quote
or anything. This sounds like a good product, the more computers the Amiga
can connect to the better off we all are in the end!
By the way, I don't know these people from beans, so this is NOT an
advertisement, just a point of interest for VAX/Amiga users.
Rocky Lhotka
Glamdring, Sword of Mithrandir
UUCP: {amdahl!bungia, uunet!rosevax, chinet, killer}!orbit!pnet51!glamdrng
ARPA: crash!orbit!pnet51!glamdrng@nosc.mil
INET: glamdrng@pnet51.cts.combbs@medsys.UUCP (BBS login) (07/20/89)
Was this guy serious when he said the Amiga's serial port couldn't run above 19,200 baud??? Call him back and ask if he's ever seen EMIT. It's PD, and allows two Amigas connected by serial cable to transfer files at 280,000 baud. Something like 292,000 baud (Bits Per Second Guys :-)) is the theoretical limit.... Granted the serial.device isn't as efficient as it could be, but it's not the hardware end that's at fault. -Wendell Dingus
shadow@pawl.rpi.edu (Deven T. Corzine) (07/20/89)
On 19 Jul 89 23:25:24 GMT, bbs@medsys.UUCP (BBS login) said: bbs> Was this guy serious when he said the Amiga's serial port bbs> couldn't run above 19,200 baud??? Call him back and ask if he's bbs> ever seen EMIT. It's PD, and allows two Amigas connected by bbs> serial cable to transfer files at 280,000 baud. Something like bbs> 292,000 baud (Bits Per Second Guys :-)) is the theoretical bbs> limit.... Granted the serial.device isn't as efficient as it bbs> could be, but it's not the hardware end that's at fault. According to the hardware manual, the Amiga's internal serial port tops out somewhere over a million baud. (!) However, it will drop bits attempting to READ at that rate. (Optimizing the serial.device driver might increase the maximum effective speed...) It can easily go far beyond 19200. (Though many comm programs often don't offer it as an option, oddly.) Deven -- Deven T. Corzine Internet: deven@rpi.edu, shadow@pawl.rpi.edu Snail: 2214 12th Street, Troy, NY 12180 Phone: (518) 271-0750 Bitnet: deven@rpitsmts, userfxb6@rpitsmts UUCP: uunet!rpi!deven Simple things should be simple and complex things should be possible.
ckp@grebyn.com (Checkpoint Technologies) (07/20/89)
In article <791@medsys.UUCP> bbs@medsys.UUCP (BBS login) writes: > >Was this guy serious when he said the Amiga's serial port couldn't run above >19,200 baud??? Call him back and ask if he's ever seen EMIT. It's PD, and >allows two Amigas connected by serial cable to transfer files at 280,000 baud. >Something like 292,000 baud (Bits Per Second Guys :-)) is the theoretical >limit.... Granted the serial.device isn't as efficient as it could be, but >it's not the hardware end that's at fault. > >-Wendell Dingus Yes, it is the hardware's fault. The Amiga serial device does not perform that well because the hardware does NOT provide for addition of start and stop bits, and calculation of parity. The serial.device must do this. Since it's a general purpose interface, it must provide these features. EMIT is a very special purpose interface; it most likely drives the hardware directly, and in a tight CPU bound loop polling the serial interface registers. Now, you can get better performance from serial.device by setting it to RAD_BOOGIE mode, in which it skips a lot of the calculations (it only does 8 data bits, one stop bit, and no parity in this mode), but it will never approach the 292000 baud limits of the hardware. -- First comes the logo: C H E C K P O I N T T E C H N O L O G I E S / / \\ / / Then, the disclaimer: All expressed opinions are, indeed, factual. \ / o Now for the witty part: I'm pink, therefore, I'm spam! \/
perry@madnix.UUCP (Perry Kivolowitz) (07/23/89)
In article <SHADOW.89Jul20063652@pawl.rpi.edu> shadow@pawl.rpi.edu (Deven T. Corzine) writes: >On 19 Jul 89 23:25:24 GMT, >bbs@medsys.UUCP (BBS login) said: >bbs> Was this guy serious when he said the Amiga's serial port >bbs> couldn't run above 19,200 baud??? Call him back and ask if he's >bbs> ever seen EMIT. It's PD, and allows two Amigas connected by >According to the hardware manual, the Amiga's internal serial port >tops out somewhere over a million baud. (!) However, it will drop >bits attempting to READ at that rate. (Optimizing the serial.device >driver might increase the maximum effective speed...) It can easily >go far beyond 19200. (Though many comm programs often don't offer it >as an option, oddly.) First, if it were easy, it would have been done. Actually, the price that you pay for going faster with the Amiga's own serial port is full take over of the machine. The Amiga's serial hardware, with zero buffering, will lose characters at much above 32,000 baud even if you bypass the Amiga's serial device and go directly to the hardware unless you disable ALL interrupts. The advantage of an expansion serial board (like the ASDG Dual Serial Board) is that you can go 115,200 baud and still multitask and not lose bytes. -- Perry Kivolowitz, ASDG Inc. ARPA: madnix!perry@cs.wisc.edu {uunet|ncoast}!marque! UUCP: {harvard|rutgers|ucbvax}!uwvax!astroatc!nicmad!madnix!perry CIS: 76004,1765 (what was that about ``giggling teenagers''?)
sneakers@heimat.UUCP (Dan "Sneakers" Schein) (11/22/98)
In Message <791@medsys.UUCP>, bbs@medsys.UUCP (BBS login) writes: >Was this guy serious when he said the Amiga's serial port couldn't run above >19,200 baud??? Call him back and ask if he's ever seen EMIT. It's PD, and >allows two Amigas connected by serial cable to transfer files at 280,000 baud. This is like an AmigaDOS version of the popular MS-DOS program, Lap Link. Speaking of, has anyone thought of a Amiga version of Lap Link. One that could be used between 2 Amigas or a Ms-DOS machine running Lap Link and an Amiga. Think of the doors that would open.... Sneakers -- ___ Dan "Sneakers" Schein //// BERKS AMIGA BBS Sneakers Computing //// 80+ Megs of software & messages 2455 McKinley Ave. ___ //// 12/2400 Baud - 24 Hrs West Lawn, PA 19609 \\\\ //// 215/678-7691 \\\\//// {pyramid|rutgers|uunet}!cbmvax!heimat!sneakers