MrDave
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Posts posted by MrDave
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I am building a few keyboards..
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Not having any luck finding a keyboard.. i am looking into designing a replacement using cherry mx mechanical keys
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There is also foil tape you can use.. i will check with the people on the coco discord if there are any used coco3 keyboards for sale..
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Well, you could look to buy a used keyboard.. buy a new keyboard ftom the zipsters zone.. use a ps2 keyboard adapter..or make your own....
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You can get get 10 chips on ebay under 20$ cdn
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Ebay is pretty good.. unless you know a good electronics house
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Ok so are you looking for a rom solution or a hardware fix now ?
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Will this internal ram mod conflict with the external ram ? I have seen a problem with this somewhere..
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My first coco was a 16k. It will be limited but still alot you can do.. and you can always program on a emulator like xroar or vcc.
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The fujitsu jad nice graphics !
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I would like to run 2x6309's in series.. 16bit bus available.. some shared ram between the 2 and 2gig addressable ram . It could run as a normal coco3 or have programs use both cpus together.
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Ed sniders Gime x is a coco3 upgrade that will give you 256 vga colors up to 640 wide resolution.. turbo speed modr.. 2.6x instead of 1.78mhz.. And i find programming with the 6309 cpu gives a big speed increase in programming power. You don't need a faster car if you know a good shortcut
But having a faster car.. thats good too !
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Here was my solution for a coco that has no rf or 1372 circuit..very simple solution ..
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Thats a pretty good video..thanks
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Yes the atari only uses 2 pins of the 3 from the variable resistor.
To wire it up for coco 1 side of the pot goes to ground the otherside to positive..the middle to the X (or y) the button gets on side to ground and to the button wire of the coco.. i might add a switch to choose x or y... but works great so far
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Hi im trying to find a bunch of blank pcb's to make some games for my atari 800xl
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Not much soldeting to do .. just solder a little wire on j1 ( bottom left ..says 64k ) a lttlecwire soldered between those pins and pop in the chips and eprom you are good to go.

Available game titles for Atari 800 vs XL/XE/64kB
in Atari 8-Bit Computers
Posted
I made some atari carts for the first time