Close

More 8-Bit Goodness & Superconference

A project log for Gigatron TTL microcomputer

Just because! A home computer without microprocessor

Marcel van KervinckMarcel van Kervinck 10/30/2018 at 17:213 Comments

The 8-Bit Guy just published his review of Pluggy McPlugface, Tiny BASIC v2 and the new games in ROM v3. And oh... we'll show it at the Superconference this weekend!

For those interested, I brought a very limited number of kits to Pasadena. They can go for a nice discount because I don't want to bring them back home.

Update: The conference badge was screaming for this hack:

The emulation is slow as molasses, running at 3 frames per second, instead of 60 frames. Contrary to my expectation, the slowdown doesn't come from the LCD update. Instead it's all due to the cycle-exact simulation which is based on the gtemu.c reference.

Hex file and modified sources attached to the project. Game controller button [A] is mapped to the DEL button. The BKSP button takes over the role of [Select] for switching between video/speed modes. You don't see the different scan line effects, because the LCD always only displays the first out of every 4 VGA scan lines (even in "full mode", aka "mode 0"), with the odd LCD lines always black. The applications still run faster depending on the mode. Continuous presses don't work, you have to simulate them by repeating. I managed to play Racer that way. Typing in Tiny BASIC v2 goes remarkably well.

Credits must go to @shaos, @jaromir and @rogerrandom for helping me plow through all the PIC stuff, as I never worked with any of that before.

Discussions

Marcel van Kervinck wrote 11/07/2018 at 09:15 point

Don't worry, I didn't have to bring any back to Europe :-)

  Are you sure? yes | no

Jac Goudsmit wrote 11/07/2018 at 08:30 point

I had no idea you were at the SuperConference (I know I should check my Hackaday feed more often). I might have been interested in buying a kit, or maybe do an exchange -- I had my stock of L-Star kits with me too, and I made an L-Star add-on for my badge :-)

  Are you sure? yes | no

Yann Guidon / YGDES wrote 11/01/2018 at 19:07 point

Congratulations again ! :-D

  Are you sure? yes | no