Search found 40 matches
- 18 Jul 2020, 21:02
- Forum: Hardware and software hacking
- Topic: vCPU instruction frequency
- Replies: 5
- Views: 4050
vCPU instruction frequency
For the people interested I did an evaluation of vCPU instruction frequency. Following is the output after a session on PucMon :) tic hex count vInstr % cum. description 18 1A 1770982 LD 17% 17% Load byte from zero page (vAC=[D]) 28 35 1340049 BCC 13% 30% Test vAC and branch conditionally. CC can be...
- 13 Jul 2020, 12:32
- Forum: Hardware and software hacking
- Topic: PucMon
- Replies: 23
- Views: 14976
Re: PucMon
Well spotted, it's probably the main difference between the original ghost AI's and my implementation, but there are many others as well :) Originally I was aiming to implement the ghost AI perfectly, (even the overflow in tracking that causes the ghost targets to offset to the left and top), but I...
- 11 Jul 2020, 16:29
- Forum: Hardware and software hacking
- Topic: Importing in Kicad 5
- Replies: 6
- Views: 4543
Re: Importing in Kicad 5
It worked for me, too, and passes the electrical rules check. A couple of spot checks look fine, too. I'm now in the process of adding Marcel's I/O and RAM expander to the schematics, and then to the main board layout, along with a few other minor changes (reposition the EPROM to allow enough space...
- 11 Jul 2020, 15:48
- Forum: Hardware and software hacking
- Topic: PucMon
- Replies: 23
- Views: 14976
Re: PucMon
Dear "at67", you really - really - did a GREAT work: I've seen the emulator, then the basic compiler and ... this application that I think is the nicest one so far on Gigatron!!! Regarding the implementation I've seen you've followed some nice guide for the AI, anyway if you didn't see the...
- 11 Jul 2020, 14:51
- Forum: Escape Meta Alt Control Shift
- Topic: In memoriam Marcel
- Replies: 19
- Views: 28142
Re: In memoriam Marcel
I add myself to all the people that are extremely sorry for this very sad news.
We lost a great person and a superb hacker.
Hope he rest in peace wherever he is or having godd time continuing hacking in another dimension.
A greeting with a lot of respect Marcel.
See you.
We lost a great person and a superb hacker.
Hope he rest in peace wherever he is or having godd time continuing hacking in another dimension.
A greeting with a lot of respect Marcel.
See you.
- 27 Aug 2019, 16:40
- Forum: Hardware and software hacking
- Topic: Simulation software
- Replies: 8
- Views: 6615
Re: Simulation software
Got the point even if the last sentence is a bit scary for the testing I've to perform for the new ideas... I've almost finalized the reasonings and hope to be able to publish the results in the short time. Hope then you'll find them interesting enough to support me a bit in the realization!... In t...
- 27 Aug 2019, 12:57
- Forum: Hardware and software hacking
- Topic: Simulation software
- Replies: 8
- Views: 6615
Re: Simulation software
Seems to me that 8x4 matrix as it is available with current lines is not suitable for direct keycode wiring, anyway this is a simple lookup of a very low frequent event. Instead I was trying to understand another thing (and sorry if the question is trivial but I'm pretty new on electronics): I red a...
- 11 Jul 2019, 17:06
- Forum: Hardware and software hacking
- Topic: Simulation software
- Replies: 8
- Views: 6615
Re: Simulation software
Yes, I saw, but unfortunately this is adding even more circuits, even if external... (and added also to the one in the keyboard itself!) For me to remain pure with the 70s philosophy the keyboard should be a very simple integrated old school matrix one! The solution I was thinking was routing the (4...
- 10 Jul 2019, 17:27
- Forum: Hardware and software hacking
- Topic: Simulation software
- Replies: 8
- Views: 6615
Re: Simulation software
Welcome to the club! Thank you!! You're really nice and let me feel feel already part of a vibrant even if niche community!! :) The Gigatron design is easy to expand, because so much was stripped away from it :D Some links to interesting earlier proposals: tocksin's: https://forum.gigatron.io/viewt...
- 08 Jul 2019, 22:21
- Forum: Hardware and software hacking
- Topic: Simulation software
- Replies: 8
- Views: 6615
Simulation software
Hello Marcel and all the "co" Tech aficionados! I watched by chance a youtube video about Gigatron and started get interested about homebrew CPU design! :) I analyzed the project and found very nicely designed and explained. I also proposed (on the hackaday blog) an exctension of the instr...