Recent content by pff000

Also one more shows the geometry settings. It does allow one to move the image but the scaling is integer. In another place I can set the resolution of the hdmi video.

The second screen shows the RGB2HDMI overlay that allows to control many things, including geometry, but appears that only allows for integer scaling of pixels in this configuration, so it is not filling the screen. I could try using other resolutions to find a better fit if one exists.

Here are photos of my screen connected via the RGB2HDMI with Arkanoid. I actually don’t know what it’s supposed to look like. I see interesting striped bricks in the second from the bottom row. And the border of text looks like it has artifacts - I’m not sure how those compare to other...

It does requires a little box and the cable for the Apple needs to be soldered onto a few spots (maybe 5 pins/wires) in the mainboard so that is a hurdle. I have mine inside the Apple now. It can be used in different machines with different cables. I have used it with a spectrum zx and compact...

One option that has worked well for me is the RGB2HDMI device. In my Apple II plus it can pick up the digital video signal for a ‘perfect’ image, including mixed text and graphics, without bypassing the internal video generator (including character rom, etc) There are instructions for an Apple...

After some time the screen had a stronger periodic pattern with black bands, suggesting that it should be the first or last of the 4 chips in the motherboard that was bad (assuming the video memory and placement in the board is relatively sane) I took my 50% chance and removed the first chip...

I am happy to say I managed to fix this problem. 😀 I replaced one of the video ram chips in the logic board with one I took of an unused video ram simm. The Quadra is back to normal! I guess I will save the other video ram chip in the simm in case another fails.

Connecting the PCjr Joystick to the Apple only requires a couple of resistors and jumper wires.

And now I can play breakout Maybe Woz will stop saying my score is terrible! 😁 I only had a 10K pot for the paddle (the Apple wants 150K) so I used correction capacitors (three 0.1uf in parallel to make 0.3uf). This is a great example of the "RC" circuit response only depending on the product...

Hi everyone, For a while now I have been building an Apple II plus. I never had an Apple II before ... so this has been a great learning experience and a fun computer to play with. The motherboard is a kit from ReactiveMicro, and so is the keyboard encoder. The keyboard itself is a kit I got...

I have a quadra 700 that was great until recently when the video became corrupted, with a pattern shown here. This happened 'all of a sudden' while the computer was running. I have a new power supply, and the video is fine if I use a nubus video card. The problem is only with the internal...

I used a 'sandwich' of several pieces to mount the Pimoroni screen, in the following order, all held in place by the regular CRT screws. The front bezel I found on thingiverse and the other parts I designed to fit the Pimoroni screen and controller in particular. 1) bezel from thingiverse...

I had good luck with a Pimoroni 8 inch screen with HDMI controller. https://shop.pimoroni.com/products/hdmi-8-lcd-screen-kit-1024x768?variant=12559868133459 I used this LCD to build an SE, you can see some pictures here. https://tinkerdifferent.com/threads/macintosh-se-with-lcd.3952/ The LCD...

Yes I was wondering the same thing! Looks like you can get ‘antistatic’ pla from protopasta...

you could try using the diagnostic mode described in this video to run some tests via the serial port, I’m not sure if it would help but could be useful to narrow down the problem.