Search found 6 matches

by mcbrown
22 Feb 2019, 19:05
Forum: Hardware and software hacking
Topic: Maze generation in gigatron assembly
Replies: 1
Views: 343

Maze generation in gigatron assembly

Hi gigatron community, in the last weeks, I've managed to implement an iterative maze generator in gigatron assembly that I'd like to share with you: https://github.com/kervinck/gigatron-rom/tree/master/Contrib/tbraun-de/gasm I think it's kinda mesmerizing watching the maze grow again and again, esp...
by mcbrown
15 Jan 2019, 19:27
Forum: Hardware and software hacking
Topic: Gigatron Emulator for Mac OS X (first test version)
Replies: 2
Views: 460

Gigatron Emulator for Mac OS X (first test version)

Hi Gigatron Community, in order to get to know Gigatron better, I decided to try writing my own emulator for Mac OS X in Objective C using Apple's Cocoa Framework. Thanks to kervinck, it is now available in https://github.com/kervinck/gigatron-rom/tree/master/Contrib/tbraun-de/Gigatron%20Mac It's an...
by mcbrown
02 Jan 2019, 21:58
Forum: Hardware and software hacking
Topic: How does Loader expect GT1 data to be presented?
Replies: 7
Views: 684

Re: How does Loader expect GT1 data to be presented?

Try to subtract 2 from the low byte you put in [$16] and [$1a]. That was it, hooray! The emulator is now working rather well. Thanks a lot for your help! I'll add the emulator to the Contrib section once I'm happy with the codebase and the featureset. Best regards and thank you again for your great...
by mcbrown
30 Dec 2018, 22:43
Forum: Hardware and software hacking
Topic: How does Loader expect GT1 data to be presented?
Replies: 7
Views: 684

Re: How does Loader expect GT1 data to be presented?

Hi at67, I've now got the approach of simply stuffing bytes into RAM working to some degree, but I've got a bug which I was not able to fix, yet. Let me try to explain what is happening: - I let the emulator initialize the Gigatron (booting up the program selection, playing the starting sound, displ...
by mcbrown
22 Dec 2018, 19:45
Forum: Hardware and software hacking
Topic: How does Loader expect GT1 data to be presented?
Replies: 7
Views: 684

Re: How does Loader expect GT1 data to be presented?

Thank you very much for your answers, at67 and marcelk! I'm certain they will help a lot! For a start, I'll try putting the bytes directly in my emulator's RAM to find out if things work as expected. With the explanation of the GT1 format in this thread and in the documentation, it should be rather ...
by mcbrown
21 Dec 2018, 20:07
Forum: Hardware and software hacking
Topic: How does Loader expect GT1 data to be presented?
Replies: 7
Views: 684

How does Loader expect GT1 data to be presented?

Hi Gigatron community, I'm looking forward to building my own Gigatron during the christmas holidays. Until then, I've started writing my own simulator/emulator. I do know that there's already a fully working javascript emulator by PhilThomas and another really complete one written in C++ using SDL ...