Kiwi - a 68k Homebrew Computer

Hi, as you might have noticed I work on a pacman-like game. Player-Tiles collision and Player-Ghosts collision detection is working already. Now I want to fade-in and -out different screens. Like fading-out title screen, fading-in playfield and so on. First I came with a routine which first divides ...

While we discuss the hardware design changes I keep on programming. :) I improved the collision detection and added fours ghosts. The ghosts have no AI yet. They just keep their direction until hitting a wall. Then they choose a new direction randomly. Eaten dots are counted correct now but player-g...

Right, it needs some external parts and it is a step down converter. I really don't like the idea of having a step down converter right on the board. I fear a pontential ripple noise disturbing audio and video signals. Maybe we should keep the currect design and let the user decide which suppy is th...

If I could make one small suggestion, use a DIN 41612 connector. Looks like this: http://www.mouser.com/ProductDetail/TE-Connectivity-AMP/535032-4/?qs=sGAEpiMZZMvkWeVFEbAjO8SozB4AR3wtBEWhHTCVqOY%3d Yeah, we finally have a use for all those old Nubus cards... Nubus... I don't have any of these cards...

I'd be interested in purchasing 2 boards, if the price could be brought down to $20 each. Other similar projects are around that level. My biggest concern is the cost and availability of some of the components. Floppy chips can be difficult to find for a reasonable price as well as video controller...

Hello, to program C/C++, a (cross) compiler is needed. I use a GCC based cross toolchain running on Linux. First we have to get the needed packages. Create a directory (e.g. /home/foo/Cross_m68k/) where you build the toolchain. Dowload these three packages and extract each into above directory: &sdo...

As for the ATX power-supply, I replyed in its own thread. As for the case, what about changing the PCB form-factor to re-use an available case which is easy to get? For example fitting it into an Amiga 500 case. I assume, even the A500 keyboard could be used, as this should be a matter of programmin...

I actually didn't measure how much power is needed. The power-supply I use has 5A for the 5V and 2A for the 12V line. Actually testing an ATX power-supply is on my to-do list. And I want to test adding an inline LC-filter. Well, I will have to order some coils to try out the filter. If we go with a ...

I think this is a good idea. I once had bus connectors in the design but dropped them when I was thinking about adding drivers or saving board space. :roll: Maybe I just add some (one or two) edge-connectors (like for ISA cards) without drivers as compromise. Then it is up to the user to add drivers...

Hello,

to be able to work on the schematics and the VHDL code I uploaded both to the member area of the forum.
They come as-is with all known and unknown issues!

Simon