Gigatron Hackers

Disabling scanlines on the Gigatron is not just a retro feature, it's also a method to allow the vCPU interpreter and SYS function calls access to more CPU cycles. From my initial testing disabling one extra scan line allows for 100% more vCPU and SYS cycles, (i.e. double the speed as tested by Mand...

This seems to be the simplest and most non intrusive method, compared to modifying Gigatron hardware and firmware and then most likely suffering from missing features and/or performance issues.

I've been working on Tetris for the Gigatron (On emulator: https://youtu.be/BATJq6sy6eM On device: https://youtu.be/6YYSNdGqg_0) and it's going ok so far, all the basic building blocks are there now (excuse the pun), and it's mostly a case of polish. The game is currently about 6k, which is mostly ...

This is interesting stuff, obviously as hackers we can do whatever we like to our own individual board's instruction sets; but there is merit in discussing the idea of modified/enhanced/additional instructions to future ROM upgrades as well, (IMHO). ** removed the junk about vCPU code ** There's lot...

Working great so far.