[Coco] hardware scrolling

[Luis Antoniosi (CoCoDemus)]

Great! I will need it as I just got a french peritel coco2  with RGB
output. It's on mail right now :)

http://www.ebay.com/itm/291023276437

15 euros it's a very good deal. French people usually don't like
sending stuff overseas (even outside the polygon) but if you speak
kindly in good french it's another story :)

Look at the back of this machine it's a min-din 8 for the peritel
SCART plug and it has RGB and monochrome composite output.

Daniel has a coco2b peritel version, full details here:

http://translate.google.com/translate?sl=auto&tl=en&js=n&prev=_t&hl=en&ie=UTF-8&u=http%3A%2F%2Famxproject.com%2F%3Fp%3D2387&act=url

But it cannot be plugged into a CM-8 without extracting and inverting
the sync signals. You will need an LM1881 and a 74LS02:

http://www.msxpro.com/hardware/rgb-vga/adaptador.gif

Or use a Sony PVM like me and be happy with no conversion at all :D

On Mon, Dec 2, 2013 at 12:51 PM, Simon Jonassen <simon at roust-it.dk> wrote:
> I have a PAL version......
>
> By thorsten dittel.....
>
> /Simon :-)
>
> -----Oprindelig meddelelse-----
> Fra: coco-bounces at maltedmedia.com [mailto:coco-bounces at maltedmedia.com] På
> vegne af Luis Antoniosi (CoCoDemus)
> Sendt: 2. december 2013 18:52
> Til: CoCoList for Color Computer Enthusiasts
> Emne: Re: [Coco] hardware scrolling
>
> Dragon Fire makes use of 8 colors on hi-res and it's pretty impressive. But
> it fails on PAL machines and coco3... How could it get to stores ?
>
> On Sun, Dec 1, 2013 at 11:12 PM, Steve Bjork <6809er at srbsoftware.com> wrote:
>> On 12/1/2013 2:35 AM, Simon Jonassen wrote:
>>>
>>> Hey Steve !
>>>
>>> I hear what your saying...
>>>
>>> If i see a "glitch" on the screen when i play with the vdg/sam, i'm
>>> at it like a dog with a bone until i get it to work ! - in the 80's i
>>> programmed demos etc for the c64....
>>>
>>> But at the same time, alot of people might not have seen all these
>>> tricks that you are saying have been lost to the eons of time....
>>>
>>> So my re-inventing the wheel and making the sourcecode for it freely
>>> available might help these tricks survive !
>>>
>>> Another thing, why was the "DMA" mode such a big no no ???????? -
>>> it's in there and it can be exploited.....
>>
>> It was simple that the undocumented modes may not always be there in
>> future versions CoCo.
>>
>> The future was key word for CoCo programmers.  The games that I would
>> start work on Today may not hit the stores for almost a year.
>>
>> To get a game in to the next Catalog that hit the stores in August,
>> the final version would need to be in Tandy's hands no later than
>> April.  Most games where contracted by December for next year's Holiday
> season.
>>
>> With these types of lead times, you always had to be watchful of the
>> changes in the future.
>>
>> Add in the fact that there was always a new model of the CoCo on the
>> drawing boards.  So, undocumented modes could be gone by the time your
>> software hit the stores.  That's not good for sells!
>>
>> Steve
>>
>>
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>
>
>
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