To top it all off, some Chinese FPGA development boards complete with camera input, display output (including HDMI), a respectable amount of RAM, and an SD slot have become available for around $20 pre-shipping. These are perfect for implementing small CPU designs as found in older processors.
To top it all off, some Chinese FPGA development boards complete with ca input, display output (including HDMI), a respectable amount of RAM, and SD slot have become available for around $20 pre-shipping. These are per for implementing small CPU designs as found in older processors.I occassionally will find a video where someone is using a GPU board to "simulate" (is that the right word?) a DOS machine. They are usually doing it for gaming. I sometimes wonder if there are any with an actual RS232 serial port that could be used for some BBSing purpose.
I occassionally will find a video where someone is using a GPU board to "simulate" (is that the right word?) a DOS machine. They are usually doing it for gaming. I sometimes wonder if there are any with an actual RS232 serial port that could be used for some BBSing purpose.
ESP-12 modules can be programmed to all sorts of things, but almost all
ESP-12 modules can be programmed to all sorts of things, but almost ayes! these are neat. i have a few of them. more powerful than some of the computers they get attached to ;)
On 08-12-22 19:53, Alexander Grotewohl wrote to Mike Powell <=-
unfortunately they're around $300/ea and the novelty wears off pretty quick if you wanted more than maybe two nodes..
... There is an exception to every rule, except this one.
I'm not sure what they're doing with GPU boards; I think they're mostly used for crypto-mining and the like.
FPGA dev boards typically have lots of I/O pins for connecting with the outside world. The FPGA design software also usually includes pre-built modules from the vendor that one can use in one's designs, and most of them have a UART as a pre-built module. With a soft UART at one's disposal there are a couple of options: MAX232 module ($2 on Amazon) or an ESP-12 module ($15,29 for five on Amazon).
A MAX232 module connects to a UART on one side and DB-9 RS232 port on the other, and handles the voltage differences as well.
ESP-12 modules can be programmed to all sorts of things, but almost all of them come from the factory programmed to be a WiFi modem. They behave pretty much just like a Hayes-compatible modem, but instead of dialing phone numbers, one dials internet addresses. They accept AT commands and generate the usual "CONNECT" and "RING" messages, although there are some additional AT commands available to facilitate things like searching for and connecting to a WiFi network.
i was just yesterday looking at single-board-computers with authentic intel 386 cpus, dos in firmware, network interface and compact flash. it would be po
ible to go old school with a little novell network or something and not totall
eat it in electric costs. there are even hardware serial to telnet devices tha
pretend to be a modem..
unfortunately they're around $300/ea and the novelty wears off pretty quick if
ou wanted more than maybe two nodes..
unfortunately they're around $300/ea and the novelty wears off pretty quick if you wanted more than maybe two nodes..
How much RAM? You could run DesqVIEW and QEMM, if there's sufficient RAM. :)
ESP-12 modules can be programmed to all sorts of things, but almost all them come from the factory programmed to be a WiFi modem. They behave pr much just like a Hayes-compatible modem, but instead of dialing phone numbers, one dials internet addresses. They accept AT commands and gener the usual "CONNECT" and "RING" messages, although there are some additio AT commands available to facilitate things like searching for and connec to a WiFi network.I have seen those. Some folks have used them to get some pretty old machines (old in comparison to the public internet age) connected to the internet.
As the SBC it was all running on is public facing, I didn't want the version of linux running under it all to get too long in the tooth.
Once I upgraded it, I could never get it all working again.
As if all of that wasn't enough, the FujiNet also has running on that same microcontroller an emulated Z80 CPU running CP/M, which can be accessed from the Atari.
As if all of that wasn't enough, the FujiNet also has running on that sa microcontroller an emulated Z80 CPU running CP/M, which can be accessed the Atari.I was reading an article on osnews.com recently about CP/M and how the owners have said it "and all its derivatives" are now free. The author was questioning whether that was restricted to just CP/M derivatives, or also things like DR-DOS, which apparently started out as a CP/M
extension.
One thing I did not glean was whether or not their are also open source, i.e. if they source is out in the wild or if it even still exists for
some of the projects.
Some of the derivatives and extensions could do things that other
versions of DOS that were out at the time could not do natively, like multitasking.
One thing I did not glean was whether or not their are also open source, MP>> i.e. if they source is out in the wild or if it even still exists for
some of the projects.
CP/M is very tied to the 8080/Z80 architecture,
On 08-13-22 09:27, Mike Powell wrote to TONY LANGDON <=-)
unfortunately they're around $300/ea and the novelty wears off pretty quick if you wanted more than maybe two nodes..
How much RAM? You could run DesqVIEW and QEMM, if there's sufficient RAM.
You think like I do on this subject. :)
On 08-14-22 11:13, Jeff Thiele wrote to Mike Powell <=-
I did find this, which seems to clarify things a bit: https://www.theregister.com/2022/07/15/cpm_open_source/
CP/M is very tied to the 8080/Z80 architecture,
These were the CPUs where CP/M had its most success, but there have
been versions for x86, 68k and AFAIR even Z8000.
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