CPC joining to VGA monitor by 5 wire interface.

[McArti0]

512x464 in mode 2
H 27kHz
V 60Hz.
text 64x57

[Audronic]

@McArti0 

Can you supply a schematic (Pinout) of how you did it ?

Thanks

Keep Safe

Ray

[McArti0]

98 r=&BC00:d=&BD00
99 REM 848x480 @ 60Hz (512x464 T64x58)
100 OUT r,0:OUT d,36
101 OUT r,1:OUT d,32
102 OUT r,2:OUT d,33
103 OUT r,3:OUT d,4
104 OUT r,4:OUT d,62
106 OUT r,6:OUT d,58
107 OUT r,7:OUT d,59 <--errata
109 OUT r,9:OUT d,7

save"VGA.bas",a

https://cpcwiki.de/forum/index.php?topic=735.0

and my experimental soft from other topic. "256x256 mode 0 ......"  use first setting run 64 and after vga.bas from this topic.

[McArti0]

I found interesting thing.

https://www.retrorgb.com/vgaconnector.html

https://cdn.retrorgb.com/images/VGAConnector-02.jpg

RGB-IN maybe it's not exactly the same as VGA-IN. Maybe that's why don't need a chapter between Hsyn and Vsync in TV connetor?

[McArti0]

 It's not end.......

[HAL6128]

It's a TV which also is able to display 15kHz pictures

[McArti0]

It's a TV which also is able to display 15kHz pictures

But native do not show picture from Amstrad. Not recognized frame format.

WATCH THIS !!!!!

[HAL6128]

yeah! very impressive.

[Skunkfish]

I don't get it, is the CPC really outputting an image 1024 pixels across or is it fooling the monitor in some way? And the monitor horizontal resolution is only 720?

[McArti0]

I don't get it, is the CPC really outputting an image 1024 pixels across or is it fooling the monitor in some way? And the monitor horizontal resolution is only 720?

This is an example of how you can reconfigure the CRTC chip in Amstrad and OS to use all 65kB Video RAM. Amstrad can show max resolution 1024x512 @ 25Hz. (or 1072x480).

Real resolution of the TV monitor is 1366 × 768 (HD Ready). TV monitor recognized Amstrad's modificated FRAME as 720x480 @30Hz. Maybe interpolated/rescaling, maybe no... :-)
A Miracle that it works.

ps. I always must found typical acpect ratio of FRAME in standard VESA. Other way I must found other Monitor, but I have not it.

[McArti0]

My TV not recognized standard Amstrad's Frame by VGA connector, BUT .... swith ON Interlace Sync Raster Scan Mode.

OUT &BC00,8 : OUT &BD00,1 and WORK !

[McArti0]

Adapter CPC to VGA on ebay 

[TotO]

Adapter CPC to VGA on ebay

It is a scam for the price, it just root the video to the HD15 pins, the monitor require to handle 15kHz/50Hz RGB as input. Sure, it is usable if you change the signals as you done, but the CPC can't display anything else, compared to use a RGB to HDMI converter.

[McArti0]

This is the price for a niche of cpc. 

"change the signals" ...  OUT &BC00,8:OUT &BD00,1 ... this is not flight to Mars.

In my poll 2 people voted, that the Original Amstrad from 1985 with 5 wire-cord IS NOT RETRO.  

RGB to HDMI converter is retro? 

[TotO]

This is the price for a niche of cpc

Hahaha. It is the price for a "yet another eBay retro business!"

RGB to HDMI converter is retro?

It is another way to display today the CPC (and other RGB systems), for the same price.
In both case, it is not really retro to not use the CPC with its monitor. (or a CRT TV set with a MP-2 interface)

[eto]

My TV not recognized standard Amstrad's Frame by VGA connector, BUT .... swith ON Interlace Sync Raster Scan Mode.

OUT &BC00,8 : OUT &BD00,1 and WORK !

will this continue to work with games?

[McArti0]

Bomb Jack, CP/M plus (very fun game!), Batman Forever demo, in some scenes, frame is crush. But R8 CRTC is not use very often in old games.

ps. should I check something?