[Coco] vacant ramblings....

[Simon Jonassen]

Hey Johann !
 
That's brilliant ! 

The tape file could just be a .wav file....

Xroar can load .wav file no problem.... It could then be CSAVEM /
SAVEM'd.....

I knew i wasn't completely nuts !.....

One of my 1541's has a parallel interface.... For the c64 userport...

The plot thickens....

/Simon :-)


-----Oprindelig meddelelse-----
Fra: coco-bounces at maltedmedia.com [mailto:coco-bounces at maltedmedia.com] På
vegne af Johann Klasek
Sendt: 11. juli 2013 21:36
Til: CoCoList for Color Computer Enthusiasts
Emne: Re: [Coco] vacant ramblings....

Hey!

On Thu, Jul 11, 2013 at 04:28:04PM +0200, Simon Jonassen wrote:
> anyone ever tried interfacing a commodore c64 drive (1541 II etc) with 
> the coco via the serial port ?

No, serial Port seems not that easy, because the ACIA chip is not adaptable
to support the IEC serial protocol ... (AFAIK).

I've done this for a Dragon 32+ (+ stands for my 64KByte upgrade) back in
1987 with a small piece of extra hardware.
I used a separate PIA 6821 and some cabling which is connected to Dragon's
expansion port.
The driver was loaded from tape and contains the IEC-routines and the Basic
interface with a LOAD, SAVE and DIRECTORY statements shortcut.

The IEC driver uses the original protocol (slow!), no burst or parallel mode
or similar acceleration. My plans to support SpeedDOS+ too (my drive was
prepared for that) wasn't realized yet. :(

Just to offer some info on it (what I have already at my hands):

http://klasek.at/hc/dragon/iec-floppy/

I planned to publish this sooner or later, but this question may give me the
boost to finish this up earlier.

What's missing: 
 - clean documentation in english
 - a digitalized tape image of the driver  - maybe someone can help me
   (is there a common format or is a WAV-file sampled on a PC enough)?

Never tried it on a Coco (alas, simply don't haven't access to such a
device).

Johann E. K.

--
The dragon on my side: http://klasek.at/hc/dragon/

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