[Coco] 80 column card like a real coco

[Luis Antoniosi (CoCoDemus)]

Other pics:

https://pbs.twimg.com/media/BUtpljUCcAAvxE2.jpg:large
https://pbs.twimg.com/media/BUtqyQLCcAANp-k.jpg:large



On Mon, Sep 23, 2013 at 10:14 AM, Brian Blake <random.rodder at gmail.com>wrote:

> On 9/23/2013 10:11 AM, Luis Antoniosi (CoCoDemus) wrote:
>
>> I plugged the 80 column card composite output into my sony PVM Green input
>> and using sync on green I have this:
>>
>> https://twitter.com/**RetroCanada76/status/**382139358628704256/photo/1/*
>> *large<https://twitter.com/RetroCanada76/status/382139358628704256/photo/1/large>
>>
>> Now it looks like a Coco3 :)
>>
>> I'm finishing the os-9 driver, it is already working but this video chip
>> has a weird memory wrap at the position 2000, different than any other
>> wordpak driver I saw. Soon I'll finish it and publish a new video running
>> nitros-9 level 1 like a coco3 :)
>>
>> This crt9128 has some nice features like block graphics mode, 60/50Hz
>> selection and a fill mode, very useful for cleaning the screen or the
>> line,
>> only 6 bytes are sent to clear the entire screen or a full line. Also it
>> has a nice smooth scroll for rolling up the screen. Gonna test it to see.
>>
>> I found new crt9128's from china costing around 6 bucks each. Gonna try
>> them to see if they solve the overscan since this chip was a industry
>> standard. I may have an early version of the chip.
>>
>>
> That display looks really crisp and clean, Luis. Nice work!!!
>
>
> Brian
>
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