Path: utzoo!attcan!uunet!lll-winken!csd4.milw.wisc.edu!nic.MR.NET!umn-d-ub!uwvax!astroatc!nicmad!madnix!perry
From: perry@madnix.UUCP (Perry Kivolowitz)
Newsgroups: comp.sys.amiga
Subject: Re: New Serial Port Board (Less Expensive)
Message-ID: <519@madnix.UUCP>
Date: 28 Feb 89 01:21:37 GMT
References: <503@madnix.UUCP> <15518@oberon.USC.EDU>
Reply-To: perry@madnix.UUCP (Perry Kivolowitz)
Organization: ASDG Incorporated
Lines: 35

In article <15518@oberon.USC.EDU> papa@pollux.usc.edu (Marco Papa) writes:
>Perry, how about a few details on the DSP design (UART chips used, buffering, 
>etc...).  Can I expect the same performance as with the TwinX-based serial 
>card?

The new board (DSB) is completely compatible with the SBX-Serial/2. Actually,
the DSB was designed to be identical to the SBX-Serial/2 from a software
perspective. Exactly the same driver is distributed with both products.

(The fact that the DSB is based upon a finished shipping set of hardware
and software should give people a better feeling about our target ship
date).

The driver distributed with DSB will support multiple DSBs if you happen 
to have more than one of them in your system.

Software performance will be exactly the same as the Serial/2. The driver
we supply has a compiled in limitation of 78.6KBaud per channel. Each 
channle is completely independent. In testing here we have achieved error
free sending and receiving at the 78.6KBaud setting.

The DSP employs a Z8530 as the serial controller. This provides 1 byte of
transmit buffering and three bytes of receive buffering per channel. All
handshake/status lines are provided as per the serial.device.

We decided upon coming out with two nine pin connectors since these are
a standard cable assembly in the IBM world which means cables should be
easy to find and cheap to buy.


-- 
                        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''?)