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From: donm@pnet07.cts.com (Don Maslin)
Newsgroups: comp.os.cpm
Subject: Re: Dynabyte CP/M system - HELP!
Message-ID: <1990Dec5.194505.2792@simasd.uucp>
Date: 5 Dec 90 19:45:05 GMT
Sender: pnet@simasd.uucp (People-NET)
Organization: People-Net [pnet07], San Diego, CA
Lines: 34

cs202101@umbc5.umbc.edu writes:
>
>Recently I acquired a CP/M system made by a company called Dynabyte,
>this system is a Dynabyte model 5200; unfortunately, instead of using
>standard format 8" disks, it uses 5-1/4" floppies which appear to use a
>format which is incompatible with that of any other CP/M systems that I
>know of.  In addition, to make matters more difficult, there were no
>communications, or file transfer, programs on any of the diskettes which
>came with the system.  I was going to attempt writing a com program for it,
>but it appears to have a non-standard UART (I'm guessing that this chip
>is the UART, since there are two of these chips on the CPU card and they
>appear to be connected to the serial port connectors); the chips in question 
>have TMS 5550 marked on them (if I recall correctly from when I had the
>CPU card removed from the system).

There is an overlay for NightOwl Softwares MEX communication software for the
Dynabyte DB 8/1.  The overlay is designated MXO-DB10.ASM, and should be on
many BBS that handle CP/M stuff along with the PD MEX114.LBR package.  If the
overlay is not directly applicable, it should at least be similar.
>
>Is there anyone out there who is familiar with this system, its UARTS,
>or who has any ideas about how to get a communications and file transfer
>program set up and running on this system?  Thanks in advance for any
>information.
>
If it would be useful, I can send you a uuencoded package called BOOTSTRP.LBR
which contains a couple of approaches to overcoming the initial 'no-comm'
hurdle.  

                                                        - don

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