[Coco] Maximum CoCo Drives

[David Gettle]

All you need to do is attach all 4 drives to the floppy card with a cable
made with 5 card edge connectors, Then use dmode and modpatch or another
hexidecimal editor to modify the drivers for the additional floppy drives
and include them in the new file list for when you create your new boot
disk. when done you should have drives with the drive ID's of 0, 1, 2, and
3. if you are using the same type drive for all of them the drive ID is all
you need to change. use the save command to save the files from memory
after you modify the descriptors in memory with dmode ie dmode /d0 drv=2
then use modpatch to change the name of the descriptor inside memory (I
forget the exact address of the byte that needs to be changed it's been 25
years since I did this.)

On Sat, Jan 25, 2020 at 1:17 PM Michael Kline via Coco <coco at maltedmedia.com>
wrote:

> Do you still have the instructions on how to do it? I would love to play
> with that idea.
> Michael
>
> Sent from Yahoo Mail on Android
>
>   On Sat, Jan 25, 2020 at 11:42, David Gettle<david17361 at gmail.com>
> wrote:   Back in my college days I was running a CoCo3 with 4 DSDD drives,
> 2 5.25's
> and 2 3.5's and even did a demo in front of my networking class where I
> connected a IBMPC to the CoCo3 as a terminal, just to prove that an 8 bit
> computer could multi-task, Then blew the instructor's mind when I formatted
> 4 floppy drives at the same time with OS-9, while running the bouncing ball
> demo from a hard drive I had connected to the CoCo on the IBM terminal. I
> also had the CoCo running with the Tandy RGB monitor, and a TV as dual
> monitors..on the CoCo.
>
> On Thu, Jan 23, 2020 at 8:09 PM RETRO Innovations <go4retro at go4retro.com>
> wrote:
>
> > On 1/23/2020 10:20 AM, Alex Evans wrote:
> > > There were people who did hacks to address as many as 15 sides using
> > > the standard controller. There are also ways to modify some disk
> > > controllers for the CoCo to allow for more than one controller. All of
> > > this requires some custom software for dealing with the drives, but if
> > > you use OS-9 this isn't really that big an issue.
> >
> > Well, if someone wants to play with the idea:
> >
> > https://github.com/go4retro/DrivePlexer
> >
> >
> >
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