Gigatron Hackers

The v6— option worked fine for me - thank you !

When trying to compile your system.gt1 with glcc 2.1 the linker complains about
glink: loaderasm.s:126: fatal error: name '_BMOV' is not defined

Do you suggest to change the loaderasm.s or to insert into glink.py as it was done previously ?

I recompiled the system.gt1 for ROMvX0 and put it to my fork of the gigatron-os repository:

https://github.com/axelb68/gigatron-os/ ... system.gt1

Are you able to right click on a .gt1 file within the emulator and upload the .gt1 file to the first working Gigatron through the BabelFish/Arduino interface? Yes, combining the pluggy reloaded and the new emulator works correctly when right clicking on a gt1! In the meantime I found out that my Ar...

I am testing the new ROM on two different GIGATRON systems. One is equipped with the pluggy reloaded which works fine with the new Babelfish.ino and the gtemuAT67_WIN10_x64.exe of the repository! However, my second system is equipped with a Gigatron RAM and IO expansion. When trying to boot from SD ...

Works perfectly with my 486 cache RAM!

Very impressive ! Where do you capture the banking information (address 4d)? Is it done somewhere in the libraries or directly by the CLPD?
Also the Z register concept for providing far pointers sounds very exciting. In your description above do you actually mean ld([Y,X]) will become ld([Z,Y,X]) ?

I used a sine wave in waveform 2 as in your Music64k example ! The main improvement in respect to sound quality is certainly due to the better resolution of the DAC. An audible difference between 6 and 8 bit may depend on the sound sample preparation, though. In addition low-pass filtering on the au...

In order to test our 8 bit DAC I played a bit with at67’s miditones / gtmidi / gtbasic toolchain.
The following sample was recorded from the output of the audio module by means of Audacity for Windows This is the standard output of the Gigatron for comparison:

Would it be possible to provide a banking of the standard video memory 0x0800-0x7fff, whilst preserving the range from 0x0000 to 0x07ff ? This should allow for a quick switch between two screens if a program resides in the range 0x8000-0xffff. In addition a 12.5 MHz Gigatron could potentially combin...