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- From: sage@LL.MIT.EDU (Jay Sage)
- Newsgroups: comp.os.cpm
- Subject: Re: Kaypro II Video Problem
- Message-ID: <9212151234.AA10247@LL.MIT.EDU>
- Date: 15 Dec 92 17:34:09 GMT
- Sender: daemon@ucbvax.BERKELEY.EDU
- Distribution: world
- Organization: The Internet
- Lines: 27
-
- Several attempts to reply directly to "reynaert@arizona.edu" have failed with
- a "user unknown" message from the host, so I will post my response here.
-
- >> I have benn having problems with my communications when I use an external
- >> modem at 2400 BPS, Some characters are lost while the comunication is
- >> going on. This only happens when there is output to my adm3a screen.
- >> Curiously, this doesn't happen at 1200 BPS or less. Also I have down
- >> loaded files at 2400 BPS and no data has been lost...
-
- This is a very well known problem with Kaypro computers. It is the
- result of a poor design of the video display. When a new line must be
- created at the bottom of the screen and the existing lines have to be
- scrolled up, the system takes so long that incoming characters are lost. I
- don't use a Kaypro myself, but many friends do. There is a file that
- implements a correction to this (I can't remember exactly what it does or
- how it does it). A common work around is to clear the screen every time it
- fills up and to start again from the top. If you don't get more specific
- advice from others who reply to you, get back to me and I will try to dig up
- that file for you. It is posted on my BBS system, which is sponsored by the
- former Kaypro User Group of the Boston Computer Society (now broadened to
- include all CP/M and MS-DOS computers). In case you are a BBSer, its phone
- number is 617-965-7046. This reaches first a v.32bis modem and, if that one
- is busy, a USR Courier HST on line 2 (alternatively reachable directly at
- 617-965-7785).
-
- -- Jay Sage
-
-