Ok, so the board is almost complete. I decided to go with the RGBI mode only and not emulate OSI mode. I also added a configuration header for selecting sync, a "Gonbes Out" connector, and power output. There's one final double-check to do before sending the boards out.
I have created a project webpage with information and schematics etc here:
http://6502.org/users/sjgray/projects/osi-600d-colour/
Comments and feedback are appreciated. I will update the page when board is sent out and when it arrives.
Steve
Superboard Colour RGB and composite interface
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Re: Superboard Colour RGB and composite interface
C4P working, C1P working. 600D Replica working, C4P+D&N floppy not working. 505 board, 610 board, Mittendorf board, TOSIE hacker board need testing, PicoDOS disk untested.
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Re: Superboard Colour RGB and composite interface
I had to fix the RGB output header.. I had it backwards...
The boards have been sent off to DirtyPCBs.com. I have ordered 12 for the first batch. They will be coming on the slow boat from china so I expect them in about 3-4 weeks.
Steve
The boards have been sent off to DirtyPCBs.com. I have ordered 12 for the first batch. They will be coming on the slow boat from china so I expect them in about 3-4 weeks.
Steve
C4P working, C1P working. 600D Replica working, C4P+D&N floppy not working. 505 board, 610 board, Mittendorf board, TOSIE hacker board need testing, PicoDOS disk untested.
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Re: Superboard Colour RGB and composite interface
So, here's a picture of the breadboard version with the colour write jumper fix.
Boards were in production today.
Steve
The colour looks much sharper than it appears from my phone's camera.Boards were in production today.
Steve
C4P working, C1P working. 600D Replica working, C4P+D&N floppy not working. 505 board, 610 board, Mittendorf board, TOSIE hacker board need testing, PicoDOS disk untested.
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Re: Superboard Colour RGB and composite interface
Been writing some demo software....
Here is a colour chart for 48-column mode: oops, I see a typo..
Here is a colour chart for 48-column mode: oops, I see a typo..
C4P working, C1P working. 600D Replica working, C4P+D&N floppy not working. 505 board, 610 board, Mittendorf board, TOSIE hacker board need testing, PicoDOS disk untested.
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Re: Superboard Colour RGB and composite interface
Just a note about the above.. my breadboard is connected via an Amiga SCART cable which has its own resistors on the rgb lines, so the colours you see above are not optimized. The optimal values for the final pcb will need to be determined so that the normal and intense colours are more distinct.
Steve
Steve
C4P working, C1P working. 600D Replica working, C4P+D&N floppy not working. 505 board, 610 board, Mittendorf board, TOSIE hacker board need testing, PicoDOS disk untested.
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Re: Superboard Colour RGB and composite interface
WinOSI is getting Steve's C1E RGB upgrade as well!
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Re: Superboard Colour RGB and composite interface
Nice! Can't wait. Will we be able to emulate the RGB upgrade BEFORE the boards actually arrive?
Steve
Steve
C4P working, C1P working. 600D Replica working, C4P+D&N floppy not working. 505 board, 610 board, Mittendorf board, TOSIE hacker board need testing, PicoDOS disk untested.
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- Posts: 325
- Joined: Mon Oct 06, 2008 1:54 pm
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Re: Superboard Colour RGB and composite interface
The Colour boards arrived today. I will be building one or two this week.
Steve
Steve
C4P working, C1P working. 600D Replica working, C4P+D&N floppy not working. 505 board, 610 board, Mittendorf board, TOSIE hacker board need testing, PicoDOS disk untested.
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- Joined: Fri Nov 14, 2008 8:32 pm
Re: Superboard Colour RGB and composite interface
I always wondered how OSI did NTSC color. It looks like the circuit relies on the slight delay of a 7404 to jab the subcarrier at the right phase to produce a color. That can't possibly work.