Gigatron Hackers

The included gt1 doesnt run? New compiled = works fine in romv5a and 64k ;-) My mistake. These were the dev7 versions. The lisp850sim.gt1 one is intended to run in the glcc test simulator gtsim. This is convenient for debugging. ./build/gtsim -rom gigatron/roms/dev7.rom ~/Downloads/lisp850/lisp850s...

And here is another one which represents the cells with longs. The tag is in the high four bits of the long. No floating point here. Yet it is closer to the original than the tagged version. This is a bit faster because it only uses long emulation and avoids structure copies. Still much better under...

Minilisp is not hopeless but one has to change it from NaN boxing to some variant of tagged format. typedef struct { double d; char t; } cell_t; #define I unsigned long #define L cell_t #define D(x) ((x).d) /* This macro is new and needs to be added in the right places everywhere */ #define T(x) ((x...

That's because the Gigatron double format is not IEEE754 but period correct Microsoft floating point (5 bytes). There are no NaNs, so NaN boxing won't work...

One of my GLCC tests is now a rewritten variant of snake.
I also have a good conio emulation for unix (in the unix directory).
Just "make snake" for unix, "make TSTsnake.gt1" for gigatron.
- Leon

https://github.com/lb3361/gigatron-lcc/ ... tuff/conio

I made several improvements to GLCC after petersieg's thread ( https://forum.gigatron.io/viewtopic.php?t=431 ). They currently are in the head of the GLCC repository and will appear in the next release after a bit of testing time. Conio interface I added an include file <conio.h> https://github.com/...

petersieg wrote: ↑01 Aug 2023, 20:26 My mistake. You are right. Youre version works.

I did not understand the lastkey logic. But I realize now that my version stops the snake whenever you press a key that is not an arrow.
Is this why lastkey was necessary?

My version above was working in gtemuAT67. But you have to make sure the keyboard emulation is in the proper mode. When you type CTRL+K, you cycle through three modes named "Kbd", "PS2", and "HwKbd". The mode name is displayed at the bottom of the right panel. The "...

Here is a working one. It uses the controller keys (arrows on the keyboard). The keyboard was unresponsive because of the strange way the keyboard is interfaced to the Gigatron. Whenever a key is pressed, the serialRaw variablecontains the ascii code for only about 60 milliseconds, regardless of whe...

Whatever documentation exists is in the comments of the include file, as in https://github.com/lb3361/gigatron-lcc/blob/master/include/gigatron/gigatron/console.h . After reading your thread, I realized that I made a mistake by not sticking to the more-or-less standard conio.h interface. So I just a...