Denial

Something else to consider. Some 40-column pet games scan the keyboard themselves and expect a "graphic" keyboard. Most 80-column machines have the "business" keyboard so the keys used to control the game will be different or perhaps not even available. Yes, you can change to 40 ...

I use Kicad. It's pretty powerful and completely free. I just did a 14x8cm board (which I think is too big for eagle). I had to create my own library of cbm parts but it wasn't too difficult. The gui takes some getting used to but once you learn a few key commands it's actually very fast. I found a ...

http://www.vintagecomputer.net/browse_thread.cfm?id=301

Steve

So you can set a PET to any screen size like the VIC? Yeah, that's a little bit odd because the 6845 (almost the same as the 6545) is also in the Amstrad CPC and CGA cards, and countless other machines, and I cannot remember being able to set the screen dimensions. The CPC could switch to a weird f...

• Vic-20 was the first home computer with a dynamically sizable screen (?)‎ If I got any of this wrong, then feel free to correct me. Sorry, PET can dynamically configure it's 6545 CRTC chip to support different screen sizes. However, like the VIC, the firmware only supports printing at the default...

Too bad the markings on the chip are hidden. It's exactly the same board that's on sale in a thread here in Denial. A "standard" 74LS08 + 62256/6206 design, which ought be capable of doing +32K RAM actually. The layout would easily fit on a 90x45 mm footprint. Ah, that's why it seemed fam...

Here's a VIC memory expander that appears to use one of those skinny dip ram chips:

http://www.ebay.com/itm/111649699125

Too bad the markings on the chip are hidden.

Steve

Idea: How about a 64K ram expansion that installs inside the machine. Figure out some way to map out the roms similar to how the C64 does. Then you could soft-load new kernals, like jiffy-dos, or bank out the BASIC roms, or just make a game that uses 56K or more of ram ;-) Might encourage new vic so...

If you're going to the trouble of modifying the design I'd say combine the Behr-Bonz with your 32K ram board and make a "Behr-Bonz Plus". You could probably add one of those 32K skinny-dip ram chips and not have to make the board too much bigger or more expensive. A couple more switches t...

If you're going to the trouble of modifying the design I'd say combine the Behr-Bonz with your 32K ram board and make a "Behr-Bonz Plus". You could probably add one of those 32K skinny-dip ram chips and not have to make the board too much bigger or more expensive. A couple more switches to...

I splurged on a Princess by Manosoft, and I'm very pleased. The convenience of the design has inspired me to consider an LCD screen. Something that could fit onto Commodores in the same way the PSone and Gamecube and others had small, "flip up" LCD screens. http://commons.wikimedia.org/wi...

e5frog wrote:Nice, did you choose any particular DPI for the scans?

600dpi greyscale

Steve

Sorry for arriving late.... I bought a FE3 kit but never assembled it. Here is the board scan: Front: http://postimg.org/image/e814zkkdv/ http://s29.postimg.org/9m50r7yuv/FE3_R3_front.jpg Back: http://postimg.org/image/u8tqcji9f/ http://s29.postimg.org/eal0meo1j/FE3_R3_back.jpg Ignore the "r3&q...

I have a MCUMALL GQ-4X usb programmer, and it seems to work for most commodore type eproms I've needed to write. The only exception being the 68764/66 24-pin rom compatible. Runs about $80-$100. You do need to plug in an external 9V power adapter to program some devices.

Steve

The C= B128 is a sweet looking machine. http://oldcomputers.net/b128.html Like the 8032 but +nicer keyboard -monitor. Then you should love the CBM-II high-profile machines CBM128-80 and 700 series with integrated monitor, separate keyboard with function keys, and internal drive option. http://www.6...