Company for the Altairduino and uKenbak-1

[mrbombermillzy]

Im gradually working my way to that! :D Will know very soon.

[rubber_jonnie]

Im gradually working my way to that! :D Will know very soon.

The sooner the better!

[Aeberbach]

I'd like to make photos... I have a Raspberry Pi 5. I have followed the pidp11 instructions on making a 64-bit system work and the GPIOs are the same so it should be fine.

https://groups.google.com/g/pidp-11/c/zPiWQ3NUFig

After following all the instructions and applying all the code patches everything seems to be fine but then the Pi simply starts and shuts itself down immediately.

I want the Pi in the pidp11 to be available for other things too, like pihole and pico development... don't really want to revert to the 4, though it would certainly be easier. I have not been impressed with the 5 at all apart from its speed! Will try again when I have another 30 minutes to waste.

[stephen_usher]

The Pi5 runs very hot and needs active cooling of both CPU and support chips from what I remember.

[Aeberbach]

It doesn't really; I have the official fan on it but most of the time it does not move at all, the heatsink is enough. They really did think that one through. And the speed with the nvme hat on it (using none of the GPIO) is excellent. I just wish it was more compatible with Pi 4 and allowed me to use a 5A 5V power supply instead of having to have the special USB-C, technically in-spec but like nothing else used by anyone else.

[rubber_jonnie]

I'd like to make photos... I have a Raspberry Pi 5. I have followed the pidp11 instructions on making a 64-bit system work and the GPIOs are the same so it should be fine.

https://groups.google.com/g/pidp-11/c/zPiWQ3NUFig

After following all the instructions and applying all the code patches everything seems to be fine but then the Pi simply starts and shuts itself down immediately.

I want the Pi in the pidp11 to be available for other things too, like pihole and pico development... don't really want to revert to the 4, though it would certainly be easier. I have not been impressed with the 5 at all apart from its speed! Will try again when I have another 30 minutes to waste.

As I understand it the RPi 5 has differences that mean software that uses GPIO like PiDP8I (Based on SIMH) won't work without changes and requires an RPi 4. I did read this somewhere but I haven't been able to find it again, which is annoying.

[stephen_usher]

Oh yes, the GPIO side has more latency than the Pi4... just check out the PiStorm threads on here for that info.

The Pi5 seems more suited to a "desktop" programming environment than a hard-core, high speed hardware interface scenario. Architecturally the Pi4 and Pi5 are very different.

[rubber_jonnie]

Oh yes, the GPIO side has more latency than the Pi4... just check out the PiStorm threads on here for that info.

The Pi5 seems more suited to a "desktop" programming environment than a hard-core, high speed hardware interface scenario. Architecturally the Pi4 and Pi5 are very different.

:lol: Yes, I probably did read it on here, but I have seen it elsewhere too.

I kind of feel that maybe the RPi 5 is more of a cheap computer than a core for building projects around.

[stephen_usher]

Oh yes, the GPIO side has more latency than the Pi4... just check out the PiStorm threads on here for that info.

The Pi5 seems more suited to a "desktop" programming environment than a hard-core, high speed hardware interface scenario. Architecturally the Pi4 and Pi5 are very different.

:lol: Yes, I probably did read it on here, but I have seen it elsewhere too.

I kind of feel that maybe the RPi 5 is more of a cheap computer than a core for building projects around.

Well, they've moved all the I/O into a dedicated controller, so there's probably more latency there. It also is accessed by a different library than the only commonly used, which causes problems for a lot of software.

[rubber_jonnie]

:lol: Yes, I probably did read it on here, but I have seen it elsewhere too.

I kind of feel that maybe the RPi 5 is more of a cheap computer than a core for building projects around.

Well, they've moved all the I/O into a dedicated controller, so there's probably more latency there. It also is accessed by a different library than the only commonly used, which causes problems for a lot of software.

Yeah, may be the reason for latency, and I'd read that people were having library issues too.

I did consider an RPi 5 for my PiDP8/I, but it was a bit expensive compared to a B+ RPi 4, and then I remembered I had a spare 4, so that sealed the deal. The PiDP8/I site does state up to a 4 B+ but makes no mention of the 5.