[Coco] Modern monitors that work on CoCo 3 and MM/1

[L. Curtis Boyle]

We do set the GIME to add an extra line between text rows (all 25 of them, not 24) to make them more readable (descenders won’t touch the tops of characters on the line below). So we are essentially running 320x224 / 640x224 pixels in the hardware text modes.

Graphics modes are 320x199  640x199, so they don’t have the extra space.

L. Curtis Boyle
curtisboyle at sasktel.net



> On Mar 12, 2025, at 5:36 PM, Christopher R. Hawks via Coco <coco at maltedmedia.com> wrote:
> 
> On Thu, 6 Mar 2025 20:57:31 -0600
> Allen Huffman via Coco <coco at maltedmedia.com> wrote:
> 
>>> On Mar 6, 2025, at 8:48 PM, Christopher R. Hawks via Coco
>>> <coco at maltedmedia.com> wrote:
>>> 
>>>   AND freesync ONLY works with HDMI and Display Ports! So the
>>> 'freesync' part is moot for the CoCo RGB. G-Sync is only on Display
>>> Ports (v1.2a).
>>> 
>>>   What matters is if the VGA port will take a 15KHz signal. I have
>>> a couple that do and one on the way that will. None of them are
>>> freesync or G-Sync. Most of the previous monitors only sync down to
>>> 30 KHz.
>>> 
>>>   Hopefully, the 'sync's will guarantee that ALL inputs can sync to
>>> 15 KHz...
>> 
>> 
>> The plot thickens. Thank you for shedding light on this!
>> 
>> --
>> Allen Huffman - PO Box 7634 - Urbandale IA 50323 - 515-999-0227
>> (vmail/TXT
>> only) http://www.subethasoftware.com - https://www.facebook.com/subethasoftware
>> 
>> 
>> 
> 
>    Took delivery of the new monitor yesterday. It does work with the
> 15KHz signal, BUT!
> 
>    The displays from BASIC (24 lines, WIDTH 80) and NitrOS9 (24
> lines) are a bit low on the screen. EOU (25 lines) is so low on the
> screen that half of the last line is OFF THE SCREEN.
> 
>    Is EOU mucking with something else?? Vertical for BASIC and NitrOS9
> start and end at the same place on the screen, but, EOU starts 2 lines
> higher and the bottom half of line 25 is off screen.
> 
>    The vertical position setting on the monitor only moves the display
> a few pixels.
> 
> Christopher R. Hawks
> HAWKSoft
> -- 
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