Path: utzoo!attcan!uunet!tektronix!percival!bucket!leonard
From: leonard@bucket.UUCP (Leonard Erickson)
Newsgroups: comp.sys.tandy
Subject: Re: Old peripherals
Keywords: coco 100 102 200 disk video controller
Message-ID: <1072@bucket.UUCP>
Date: 29 Sep 88 04:49:51 GMT
References: <284@pte.UUCP>
Reply-To: leonard@bucket.UUCP (Leonard Erickson)
Organization: Rick's Home Grown Unix; Portland, OR
Lines: 29

In article <284@pte.UUCP> car@pte.UUCP (Chris Rende) writes:
<At the moment, Radio Shack has low prices on the following old peripherals:
<
<26-3142: Programmable Controller (Plug 'N Power) for the Color Computer
<26-3806: Disk/Video interface for the Model's 100/102/200
<
<My problem is that I have neither a CoCo nor a Model 100/102/200. I am
<interested in the adaptableness of these two items to another computer, say
<a Model I.
<
<The Disk/Video interface would (might) give my 64x16 Model I 80x25 video! By
<searching my old Radio Shack catalogs I managed to find a picture of the Disk
</Video unit connected to a Model 100 via a ribbon cable. More than likely 
<this is the same type of connection use between the Model I CPU and its
<Expansion Interface - i.e., a memory mapped bus of sorts. If this is the case
<then interfacing to this device might not be too bad. I was not able to get
<a look at the manual for this one to see if the connector pinout spec's are
<in it.

The 100/102/200 use an 80C85. The DVI uses a Z80! The cable is rather is *not* 
a real system bus. The communication between the 100 and DVI is thru a PIA
chip in each machiine. Youd need to come up wiith a driver for the Model I
to talk to the DVI, and then you'd have the problem that the character sets
are different!
-- 
Leonard Erickson		...!tektronix!reed!percival!bucket!leonard
CIS: [70465,203]
"I used to be a hacker. Now I'm a 'microcomputer specialist'.
You know... I'd rather be a hacker."