[Coco] Burning EPROMs, ADOS and ADOS-3

[Rogelio Perea]

Thanks for the input Art (straight from the creator). Trimmed those initial
bytes off the bin file, burned again the 2764s and now I have two great
ADOS setups, one on my F board CoCo 1 and another on the CoCo 3 - finally
my CoCo 1 setup does 6ms double sided drives... been a long time waiting
for that :-)

-- RP

On Sun, Nov 23, 2014 at 7:19 PM, Arthur Flexser <flexser at fiu.edu> wrote:

> The file should definitely start with the DK characters;  whatever is
> before that should be lopped off.
>
> Art
>
> On Sun, Nov 23, 2014 at 7:17 PM, Rogelio Perea <os9dude at gmail.com> wrote:
>
> > Trying my hand at burning a couple EPROMs for my CoCo 1 & 3 setups, got
> the
> > customized ADOS and ADOS-3 files (.BIN) ported to my Weven system to
> > program the 2764s with those images - using a China made TL866CS MiniPRO
> > burner.
> >
> > After burning two 2764s - each from its own .BIN file - I installed the
> > chips on a 26-3029 (with an adapter for the 28 pin to 24 pin scenario
> > there) and a FD-502 controller (just a drop in on this one). Testing both
> > on each computer got my only ECB, apparently the CoCo is not reading the
> > DOS.
> >
> > Snooping around on an image of the previous EPROM I had on the FD-502
> > (RSDOS 1.1 modified for 6ms step rate and 'double' sided drive
> operation),
> > I see that the first two bytes on this one relate to the ASCII
> characters D
> > and K (Hex 44 and 4B); the images for both ADOS and ADOS-e BINary files
> > have a string of Hex 00 20 00 20 00 20 at the base with Hex 44 and 4B
> > coming after those... I suspect there is something amiss on the BINary
> > files I have, lost in the haze of my aging memory  recall something from
> > years ago about trimming (or padding) the BIN file as read from the CoCo
> > because of the way it is written on disk, before committing to the EPROM
> > burner...
> >
> > Any hints on this will be welcome
> >
> > --
> > Coco mailing list
> > Coco at maltedmedia.com
> > https://pairlist5.pair.net/mailman/listinfo/coco
> >
>
> --
> Coco mailing list
> Coco at maltedmedia.com
> https://pairlist5.pair.net/mailman/listinfo/coco
>