Search found 5 matches

by gawater
23 Apr 2023, 20:06
Forum: Escape Meta Alt Control Shift
Topic: Langton's Ant
Replies: 2
Views: 1743

Re: Langton's Ant

Thanks! And apologies for posting in the wrong group. Should have been HW and SW hacking. Inexplicably I was drawn towards Escape Meta Alt Control Shift.
by gawater
23 Apr 2023, 11:14
Forum: Escape Meta Alt Control Shift
Topic: 1-byte NOP for vCPU
Replies: 3
Views: 1563

Re: 1-byte NOP for vCPU

farjump.txt When coding in vCPU assembly I spend a lot of time on relocating code because of pagebreaks, and I was thinking of ways to avoid this headache. I added 7 far jump instructions, written as assembler macros: JMP address (far jump always), JMPcc address (far jump on condition, where cc = E...
by gawater
23 Apr 2023, 08:39
Forum: Escape Meta Alt Control Shift
Topic: 1-byte NOP for vCPU
Replies: 3
Views: 1563

1-byte NOP for vCPU

Quick question: I'm in need for a single byte vCPU NOP instruction. For 2 bytes I can do ORI 0, for 3 there's BCC "next_line" but for a single byte I didn't see anything obvious in the documented instruction set. So I thought might there be an undocumented single byte opcode that doesn't d...
by gawater
18 Apr 2023, 07:21
Forum: Escape Meta Alt Control Shift
Topic: Langton's Ant
Replies: 2
Views: 1743

Langton's Ant

Here's a small screensaver program that I wrote in vCPU assembly to get my feet wet on the Gigatron. The ant's direction vector (Left or Right turn for each state ) is generated randomly. Up and down arrow keys let you cycle through the number of states (from 0 to 63), left arrow restarts the ant wi...
by gawater
21 Feb 2023, 09:27
Forum: Kit assembly gallery
Topic: New Gigatron is online - literally
Replies: 1
Views: 1887

New Gigatron is online - literally

Hello all, A new Gigatron is online. I learned about Gigatron (through my youtube feed) on Thursday and had to order the kit right away. It arrived on Saturday, I built it on Sunday and to my delight it worked right away. In my book, that's a testament to the quality of the design. Rummaging through...