[Coco] Becker interface for Coco 2 emulators

[Ron]

Hi David,

Even though I believe I'm grabbing the correct ROM, I do not see the 
word "BECKER" in the HDBDOS string.  I keep seeing DW3 COCO2.  That has 
to be part of the problem -- incorrect ROM.

Would you be able to send me the ROM you have?

Thanks again for your help!

-Ron



On 04/15/2017 03:04 PM, David Ladd wrote:
> On Sat, Apr 15, 2017 at 2:25 PM, Ron <ron at kdomain.org> wrote:
>
>> Hi David,
>>
>> Thanks for explain the 2 versions -- now I understand the slight
>> difference.
>>
>> No luck getting the HDBDOSDW3CC2.ROM working with MAME yet.  Not sure what
>> the deal is.  I'm going to get fiddling with it.
>>
> ​HDBDOSDW3CC2.ROM is only for use with a real CoCo 2 or CoCo 1 with fixed
> Op Amp on the bitbanger port.​
> HDBDOSDW3CC1.ROM is for the CoCo 1 that has the original Op Amp.
> HDBDOSDW3CC3.ROM is for use on the CoCo 3.
>
> Reason for the Becker port being supported by MAME, VCC, and XROAR was to
> give them the same access that the CoCo3FPGA project has.
>
> Garry Becker's FPGA code emulates the FDC chip and does the conversion to
> DriveWire which is why HDBDOS had never been setup to work with the Becker
> port.  Now the code was copied over from NitrOS-9, but never tweaked to
> work with HDBDOS's stack.  After the routine was fixed then we were able to
> HDBDOS with VCC, XROAR, and MAME's Becker port.​
>
>
>> ​<cut>
>> ​
>
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