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- Path: news.mountain.net!usenet
- From: gene_heskett@wvlink.mpl.com (Gene Heskett)
- Newsgroups: comp.sys.amiga.hardware
- Subject: Re: A2000 Serial Problem
- Date: 06 Apr 96 00:23:48 +0500
- Organization: MountainNet, Inc. Morgantown WV 800.444.1458
- Message-ID: <1690.6670T23T2414@wvlink.mpl.com>
- References: <151393@cup.portal.com>
- NNTP-Posting-Host: slip6.mpl.com
- X-Newsreader: THOR 2.22 (Amiga;TCP/IP)
-
-
- KWD> I get errors when I run my serial port at 9600 bps and above.
- KWD> It seems to be related to hard disk activity. I can download
- KWD> files into RAM: at over 3000 bps, but when disk is involved
- KWD> I get errors. The big problem is Internet connections with web
- KWD> browsers and newsreaders.
-
- KWD> I asked the hardframe folks (that's the disk controller I have)
- KWD> but they had no suggestions. I have my prefs serial buffer set
- KWD> as high as it will go. Anyhow MLINK crawls (saying garbage data,
- KWD> and checksum errors).
-
- KWD> Any suggestions? (AmigaDOS 3.1, A2630)
-
- KWD> Thanks muchly,
- KWD> Kevin
-
- Kevin, I'm going to make an assumption. Which is that your hardframe
- possibly doesn't move its data with dma. aka direct memory access.
- I also have such a controller (no dma) but its an IDE, so the effect
- is still valid. There are 2 fixes, both of which need to be done.
-
- 1. Do all the downloading to SD0: (statram3.1). That will get you
- maybe to 19200. Maybe. The miggy only has a one byte incoming
- buffer, so at 19200, you have to be *very* carefull about such things
- as scrolling screens at the same time as the download is in progress.
- Move the file to its final location after the download is done.
-
- 2. Get a Multiface III card *and* download to SD0: I have a 2630,
- and a 28.8 v34 modem. I run at an interface speed of 115200, no
- errors. With a slower cpu, YMMV.
-
- Cheers
-
- /* Gene Heskett | I need help, please see my adv. */
- /* CE @ WDTV Weston/Clarksburg WV | in the newsgroup 'alt.tv.jobs' */
- /* <gene_heskett@wvlink.mpl.com> | We are an equal opportunity and */
- #include <std.disclaimer> | all that stuff employer.
-
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