Gigatron Hackers

Looks awesome, there's still some work that needs to be done on the software side, (which I am sure you have noticed), there are some bugs, pruning that needs to be done and missing features...would be fantastic if someone was to take up that mantle...*wink wink*

Congratulations on your progress and success, when does the Kickstarter/GoFundMe start and where do I sign up?

Update:

• ST was moved from page0 to page1, this increased it's execution cycles from 16 to 20
• Added the ADDB instruction, 28 cycles
• Added the SUBB instruction, 28 cycles

Update:

• DEC was moved from page0 to page1, this increased it's execution cycles from 16 to 20
• Added the LDQ instruction, 26 cycles

Update: LD was moved from page0 to page1, this increased it's execution cycles from 18 to 22 Added the CMPI instruction, 32 cycles ; CMPI subtracts 0..255 from a zero page variable, storing the sign and result in [vAC] ; the result is not numerically correct, but is valid for branching and testing ...

Update: maxTicks was increased from 30 to 32, the decreases in instruction execution cycles I have achieved mostly offsets the increase in overall execution time from increasing maxTicks above 30. ADDW was moved from page0 to page1, this increased it's execution cycles from 28 to 32 XCHG was change...

@cde Cheers! Update: I've removed LARR and SWAP, LARR didn't offer enough of a benefit in real code to warrant it's existence and SWAP was a specific case of XCHG that also couldn't justify it's own existence. The three new instructions that replace them are: LDWQ ; loads a literal 0..255 into a zer...

TLDR: I added a bunch of new vCPU instructions and a 16bit stack pointer, (that is backwards compatible with all currently existing software), to an experimental ROM; there are now no instruction slots free, but if anyone has suggestions for new vCPU instructions or changes to the current ones, feel...

There's an update of BabelFish.ino for both ROM and NO_ROM, squashed an unsigned int bug and a reduction in size for NO_ROM by 50 bytes, which should help it compile on different versions of the Arduino compiler.

The top of the page states that there is one left, so it's probably a good idea to send a PM to bmwtcu.